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Skyjacker Rear Block & U-Bolt Kit 1973-87 Truck 1/2 & 3/4-Ton, 6-Lug

825-BUK3588

made in usa

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Skyjacker BUK3588
$117.67
Rear Block & U-Bolt Kit
  • 1973-87 Truck 1/2 & 3/4-Ton, 6-Lug
  • 1973-91 Blazer/Jimmy/Tahoe/Yukon
  • 1973-91 Suburban 1/2 & 3/4-Ton, 6-Lug
  • 4WD
  • 3.5'' Rear Lift
  • Free Shipping - Ships directly from the manufacturer
    Save $20 off $200, $50 off $500, $100 off $1,000 Orders. Promo Code: SPRINGSAVINGS exclusions apply
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    Narrow Results

    1975  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1985-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1975  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1986  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1984  GMC K1500

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980-1983  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  GMC V2500

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979-1986  GMC K1500

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1991  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1977  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1979-1986  GMC K2500

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1986  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1985  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980-1981  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1986  GMC K2500

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1976  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1984  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: F
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975-1978  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1974  GMC K25/K2500 PICKUP

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1976  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1982  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1975  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977-1979  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980-1986  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1974  CHEVROLET K20 PICKUP

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1981-1982  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: F
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1974  GMC K25/K2500 PICKUP

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1986  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  GMC K15/K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  CHEVROLET BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1976  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1980  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976-1978  GMC K15 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1991  CHEVROLET BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1975  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1976  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1977-1980  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1982  GMC K1500

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1977-1979  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1981-1982  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1985-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977-1978  GMC K15 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974  GMC K15/K1500 PICKUP

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976-1980  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  CHEVROLET BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974  CHEVROLET K10 PICKUP

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  GMC V1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  GMC K15

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: N
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1975  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1978  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC K15 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  GMC K2500

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1982-1986  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1979  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1982-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1975  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1985-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1979-1980  GMC K1500 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976-1980  CHEVROLET K10 SUBURBAN

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987-1991  CHEVROLET BLAZER

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1975  CHEVROLET K10

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1976  GMC K25

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  GMC K25/K2500 PICKUP

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1986  GMC K2500

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1977-1979  GMC JIMMY

    • Fitment_Note: 3.5 in. Lift; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976-1986  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K20

    • Fitment_Note: 3.5 in. Lift; 6 Lug Wheel; Incl. The Following Parts~Rear Block Kit~U-Bolts
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )
    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.