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Sealed Power VS-521

Valve Spring Single Spring w/Damper

Sealed Power VS-521

844-VS-521

made in usa
jegs shipping
Estimated ship date 12/04/17 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Sealed Power VS-521 Valve Spring Single Spring w/Damper $5.99
Valve Spring
  • Single Spring w/Damper
  • 1.220" O.D.
  • 1.125" Coil Bind Height

  • Specifications:

    Manufacturer's Part Number:
    VS521

    Valve springs are one of the most critical and overlooked components in your engine. Match these Sealed Power valve springs up to your cam and help your engine to reach its full potential. It does absolutely no good to install a cam that will perform up to 7,000 rpm if you do not have the correct springs. Use the only valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. Sealed Power valve springs are offered in single and dual styles to meet their cam requirements.

    Does Sealed Power VS-521 fit your vehicle?

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    Aspiration

    1964-1965 GMC 1000 SERIES PICKUP

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1980 PONTIAC GRAND PRIX

    • Liter: 4.9
    • SubModel: SJ
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1985 PONTIAC GRAND AM

    • CC: 2474
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1974 CHEVROLET C20 PICKUP

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1978-1979 PONTIAC SUNBIRD

    • CC: 2474
    • Liter: 2.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: 1
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1975-1976 PONTIAC FIREBIRD

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1959 CHEVROLET 3700

    • CC: 4638
    • Liter: 4.6
    • SubModel: 3700
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1965-1967 CHEVROLET CORVAIR

    • CC: 2684
    • Liter: 2.7
    • SubModel: BASE
    • CUI: 164
    • EngineType: H6 ( 2.7 L / 164 )

    1967 CHEVROLET SUBURBAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968-1969 GMC G25/G2500 VAN

    • Liter: 3.8
    • SubModel: VANDURA
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1950-1954 CADILLAC SERIES 60 FLEETWOOD

    • EngineType: ALL
    • SubModel: ALL

    1969 GMC K1500 PICKUP

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1975-1984 CHEVROLET G10 VAN

    • CC: 4097
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1961-1963 BUICK SKYLARK

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1975 CHEVROLET NOVA

    • CC: 4097
    • Liter: 4.1
    • SubModel: CUSTOM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1974 CHEVROLET G20 VAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1960-1961 CHEVROLET C40

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1975-1978 CHEVROLET K20 SUBURBAN

    • Liter: 4.8
    • SubModel: CUSTOM DELUXE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1980-1981 BUICK REGAL

    • Liter: 4.3
    • SubModel: LIMITED
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1989 GMC P25/P2500 VAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1981 PONTIAC GRAND PRIX

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1976 PONTIAC LEMANS

    • Liter: 4.1
    • SubModel: SPORT
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977 CHEVROLET EL CAMINO

    • CC: 4097
    • Liter: 4.1
    • SubModel: CLASSIC
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983-1984 CHEVROLET K30 PICKUP

    • Liter: 4.8
    • SubModel: CUSTOM
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975 OLDSMOBILE CUTLASS

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1957-1960 CHEVROLET TRUCK

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1967-1969 CHEVROLET G20 VAN

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1980 GMC K2500 PICKUP

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977 PONTIAC VENTURA

    • CC: 2474
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1982 BUICK CENTURY

    • CC: 2474
    • Liter: 2.5
    • SubModel: LIMITED
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1979-1982 CHEVROLET K30 PICKUP

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1964 BUICK SKYLARK

    • CC: 4917
    • Liter: 4.9
    • SubModel: BASE
    • CUI: 300
    • EngineType: V8 ( 4.9 L / 300 )

    1979 CHEVROLET G30 VAN

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1961 PONTIAC TEMPEST

    • CC: 3528
    • Liter: 3.5
    • SubModel: CUSTOM
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1978-1979 PONTIAC GRAND AM

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1964-1966 CHEVROLET K20 PICKUP

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1962-1966 CHEVROLET BEL AIR

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1973 GMC C15/C1500 SUBURBAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1959-1960 CHEVROLET EL CAMINO

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1980-1981 PONTIAC PHOENIX

    • CC: 2474
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1975-1977 PONTIAC LEMANS

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1984-1985 BUICK CENTURY

    • CC: 2474
    • Liter: 2.5
    • SubModel: CUSTOM
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1986 CHEVROLET C30 PICKUP

    • Liter: 4.8
    • SubModel: CUSTOM
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979-1982 GMC C2500 SUBURBAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977 PONTIAC VENTURA

    • Liter: 4.9
    • SubModel: SJ
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1970-1972 GMC K25/K2500 PICKUP

    • CC: 4801
    • Liter: 4.8
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1963 GMC PB1000 SERIES VAN

    • EngineType: ALL
    • SubModel: ALL

    1968-1969 CHEVROLET EL CAMINO

    • CC: 3769
    • Liter: 3.8
    • SubModel: CUSTOM
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1975-1978 CHEVROLET G20 VAN

    • Liter: 4.8
    • SubModel: BEAUVILLE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1983 JEEP CJ7

    • Liter: 2.5
    • SubModel: BASE
    • CUI: 150
    • EngineType: L4 ( 2.5 L / 150 )

    1962-1965 CHEVROLET IMPALA

    • CC: 6704
    • Liter: 6.7
    • SubModel: BASE
    • CUI: 409
    • EngineType: V8 ( 6.7 L / 409 )

    1976 OLDSMOBILE OMEGA

    • Liter: 4.1
    • SubModel: F85
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980 PONTIAC CATALINA

    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1965 CHEVROLET CHEVELLE

    • CC: 4638
    • Liter: 4.6
    • SubModel: SS
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1975-1978 CHEVROLET K20 PICKUP

    • Liter: 4.8
    • SubModel: CHEYENNE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1981 PONTIAC FIREBIRD

    • Liter: 4.3
    • SubModel: FORMULA
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1974-1978 GMC G25/G2500 VAN

    • Liter: 4.8
    • SubModel: RALLY
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975-1978 CHEVROLET C10 PICKUP

    • CC: 4097
    • Liter: 4.1
    • SubModel: CHEYENNE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1961-1963 BUICK SKYLARK

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1978 CHEVROLET K10 PICKUP

    • CC: 4097
    • Liter: 4.1
    • SubModel: CHEYENNE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980 PONTIAC BONNEVILLE

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1975-1978 GMC K25 SUBURBAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1961-1963 BUICK SPECIAL

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1956 CADILLAC SERIES 62

    • CC: 5972
    • Liter: 6.0
    • SubModel: BASE
    • CUI: 365
    • EngineType: V8 ( 6.0 L / 365 )

    1964 CHEVROLET CHEVY II

    • CC: 3769
    • Liter: 3.8
    • SubModel: NOVA
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1982 PONTIAC PHOENIX

    • CC: 2474
    • Liter: 2.5
    • SubModel: LJ
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1976 OLDSMOBILE CUTLASS SUPREME

    • Liter: 4.1
    • SubModel: BROUGHAM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977 PONTIAC ASTRE

    • CC: 2474
    • Liter: 2.5
    • SubModel: SAFARI
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1968-1989 CHEVROLET P20 VAN

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977 PONTIAC BONNEVILLE

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1977 CHEVROLET IMPALA

    • CC: 4097
    • Liter: 4.1
    • SubModel: CUSTOM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1981 CHEVROLET G20 VAN

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977-1978 CHEVROLET K30 PICKUP

    • Liter: 4.8
    • SubModel: CHEYENNE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977 PONTIAC FIREBIRD

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1983 BUICK CENTURY

    • CC: 2474
    • Liter: 2.5
    • SubModel: LIMITED
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1973 GMC K25/K2500 PICKUP

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975-1978 GMC G35/G3500 VAN

    • Liter: 4.8
    • SubModel: MAGNAVAN
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1979 PONTIAC GRAND LEMANS

    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1985 PONTIAC FIREBIRD

    • CC: 2474
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1979-1980 CHEVROLET K10 PICKUP

    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1977-1979 PONTIAC CATALINA

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1964-1967 CHEVROLET P20 SERIES VAN

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1982 PONTIAC PHOENIX

    • CC: 2474
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1975 OLDSMOBILE OMEGA

    • Liter: 4.1
    • SubModel: SALON
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978 GMC K25 PICKUP

    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987 CHEVROLET R20 PICKUP

    • Liter: 4.8
    • SubModel: CUSTOM DELUXE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1965 PONTIAC LEMANS

    • CC: 3524
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: L6 ( 3.5 L / 215 )

    1980-1981 PONTIAC GRAND LEMANS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1974 CHEVROLET C10 PICKUP

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1964-1966 CHEVROLET MALIBU

    • CC: 5358
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1969 CHEVROLET K20 PICKUP

    • CC: 4801
    • Liter: 4.8
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1961 BUICK SPECIAL

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1975 CHEVROLET MALIBU

    • CC: 4097
    • Liter: 4.1
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1964 OLDSMOBILE F85

    • CC: 3687
    • Liter: 3.7
    • Aspiration: N
    • SubModel: BASE
    • CUI: 225
    • EngineType: V6 ( 3.7 L / 225 )

    1982-1984 CHEVROLET C10 PICKUP

    • CC: 4097
    • Liter: 4.1
    • SubModel: CUSTOM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983 OLDSMOBILE OMEGA

    • CC: 2474
    • Liter: 2.5
    • SubModel: BROUGHAM
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1963 BUICK SPECIAL

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: DELUXE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1961-1963 BUICK SPECIAL

    • CC: 3528
    • Liter: 3.5
    • Aspiration: N
    • SubModel: BASE
    • CUI: 215
    • EngineType: V8 ( 3.5 L / 215 )

    1980-1981 PONTIAC FIREBIRD

    • Liter: 4.9
    • Aspiration: T
    • SubModel: FORMULA
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1963 CHEVROLET C30 PICKUP

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )
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