Instant Rebates
800.345.4545
Call Our Support Line
24 Hours / 7 Days a Week!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

All Categories


Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help

B&M 20261

Shift Improver Kit 1988-1994 GM TH400/3L80

B&M 20261
Representative Image
Product images may differ from actual product appearance.

130-20261

made in usa
jegs shipping
Ships
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
B&M 20261 Shift Improver Kit 1988-1994 GM TH400/3L80 $41.14
Shift Improver Kit
  • 1988-1994 GM TH400/3L80
  • Includes Gaskets, Seals, Drill Bit and Fluid Separators

  • Specifications:

    Trans Year
    1988
    Trans Year
    1989
    Trans Year
    1990
    Trans Year
    1991
    Trans Year
    1992
    Trans Year
    1993
    Trans Year
    1994
    Trans Model
    GM- TH400 (Auto)3 Speed
    Trans Model
    GM- 4L80E (Auto)4 Speed
    Gaskets Included
    Yes
    Automotive Item Grade
    High Performance
    Filter Included
    No
    Full Manual
    No
    Quantity
    Sold as a kit
    Manufacturer's Part Number:
    20261

    Performance Made Easy, Two Kits in One!

    B&M Shift Improver Kits are the easiest and most affordable way to gain automatic transmission performance results. B&M's kits modify an automatic transmission's shift timing in order to increase shift firmness and in-turn improve durability. These dual stage performance shift kits are application specific and contain your choice of Heavy Duty or Street/Strip configurations. Shift Improver Kits provide well appointed, crisp shifts delivering unmatched performance.

    Stage 1 - Heavy Duty:
    Firm, positive shifts without loss of passenger comfort for improved performance in all street vehicles. Recommended for normal passenger vehicles and tow vehicles.

    Stage 2 - Street/Strip:
    Provides positive shifts for high performance street use or competitive events. This configuration is for the enthusiast who wants hard, fast shifts.

    Features:
  • Recalibrate your transmission’s shift timing.
  • Select the configuration that best suits your application.
  • Provides well appointed, crisp shifts.
  • Eliminates excessive shift overlap.
  • Less wear and tear on your transmission’s clutches and bands.

  • Does B&M 20261 fit your vehicle?

    Narrow Results

    1988 CHEVROLET P30 VAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1989-1990 GMC K2500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLE

    1990 CHEVROLET P30 VAN

    • Liter: 3.9
    • SubModel: BASE
    • CUI: 239
    • EngineType: L4 ( 3.9 L / 239 )

    1989-1990 GMC C3500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLX

    1989-1990 CHEVROLET V2500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET P30 VAN

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1990 GMC G25/G2500 VAN

    • Liter: 5.0
    • SubModel: VANDURA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1990 CHEVROLET C3500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1990 CHEVROLET G10 VAN

    • EngineType: ALL
    • SubModel: BEAUVILLE

    1989 CHEVROLET R3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET R3500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1990 GMC G35/G3500 VAN

    • Liter: 7.4
    • SubModel: VANDURA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988 CHEVROLET R20 PICKUP

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

    1990 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: RALLY CAMPER SPECIAL

    1988 CHEVROLET R20 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1989-1990 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLX

    1990 CHEVROLET G30 VAN

    • EngineType: ALL
    • SubModel: HI-CUBE

    1988-1990 GMC R2500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1990 GMC G35/G3500 VAN

    • Liter: 5.7
    • SubModel: VANDURA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988 CHEVROLET R30 PICKUP

    • Liter: 6.2
    • SubModel: CUSTOM DELUXE
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1988-1990 CHEVROLET C2500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1990 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1988-1989 CHEVROLET G20 VAN

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET G10 VAN

    • EngineType: ALL
    • SubModel: CHEVY VAN

    1990 CHEVROLET K2500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1989-1990 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA

    1988 CHEVROLET R20 PICKUP

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1988 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: RALLY STX

    1990 CHEVROLET C1500 PICKUP

    • EngineType: ALL
    • SubModel: 454 SS

    1990 CHEVROLET K2500 PICKUP

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1990 CHEVROLET V3500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1988-1990 CHEVROLET P30 VAN

    • EngineType: ALL
    • SubModel: STEP-VAN

    1988-1989 CHEVROLET K3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1989-1990 GMC C3500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA

    1989-1990 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLE

    1989-1990 GMC K3500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLE

    1989-1990 GMC K3500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA

    1988-1990 GMC V2500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET G30 VAN

    • Liter: 7.4
    • SubModel: SPORTVAN
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1990 GMC G25/G2500 VAN

    • Liter: 5.7
    • SubModel: VANDURA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1990 CHEVROLET V3500 PICKUP

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1988 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: RALLY

    1988-1990 CHEVROLET C2500 PICKUP

    • Liter: 4.3
    • SubModel: CHEYENNE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1988-1990 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET V20 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET R30 PICKUP

    • Liter: 5.7
    • Aspiration: N
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1989 CHEVROLET G10 VAN

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET K3500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1990 CHEVROLET G20 VAN

    • Liter: 6.2
    • SubModel: SPORTVAN
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1989-1990 GMC K2500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLX

    1990 GMC G25/G2500 VAN

    • Liter: 6.2
    • SubModel: VANDURA
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1990 CHEVROLET G10 VAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORTVAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988 CHEVROLET R30 PICKUP

    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988 GMC G35/G3500 VAN

    • Liter: 6.2
    • SubModel: RALLY CUSTOM
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1988 CHEVROLET R30 PICKUP

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1988 CHEVROLET R30 PICKUP

    • Liter: 7.4
    • SubModel: CUSTOM DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1990 GMC R3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1989 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: ALL

    1988 GMC C2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET R30 PICKUP

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

    1988 GMC C1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1989 CHEVROLET R2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1989 CHEVROLET V3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET R20 PICKUP

    • Liter: 6.2
    • SubModel: CUSTOM DELUXE
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1988 CHEVROLET R20 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1990 CHEVROLET C3500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1990 CHEVROLET G20 VAN

    • EngineType: ALL
    • SubModel: BEAUVILLE

    1988-1989 CHEVROLET G30 VAN

    • EngineType: ALL
    • SubModel: ALL

    1988-1989 CHEVROLET K2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1990 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: RALLY STX

    1988-1989 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988-1990 CADILLAC BROUGHAM

    • EngineType: ALL
    • SubModel: ALL

    1989-1990 CHEVROLET C1500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1988 CHEVROLET R30 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1989-1990 GMC C1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLE

    1988 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988-1989 GMC R2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1990 GMC V1500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET R20 PICKUP

    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1990 GMC V3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET R30 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1988 GMC K2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: VANDURA

    1990 CHEVROLET G30 VAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SPORTVAN
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988 GMC C3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1988 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: MAGNAVAN

    1990 CHEVROLET G30 VAN

    • Liter: 6.2
    • SubModel: SPORTVAN
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1990 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1988-1990 CHEVROLET P30 VAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988 CHEVROLET R20 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET K3500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1990 GMC G15/G1500 VAN

    • Liter: 5.0
    • SubModel: VANDURA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: VANDURA SPECIAL

    1988-1989 CHEVROLET C3500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1990 CHEVROLET G10 VAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SPORTVAN
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1990 CHEVROLET G30 VAN

    • EngineType: ALL
    • SubModel: CHEVY VAN

    1990 GMC G35/G3500 VAN

    • EngineType: ALL
    • SubModel: VANDURA SPECIAL

    1990 GMC G25/G2500 VAN

    • Liter: 5.7
    • SubModel: RALLY
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1989-1990 GMC K2500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA
    Items You Need

    Before you leave us... Receive a free catalog or join our email list

    Sign up to receive our catalog or subscribe to our email list now to see our exclusive email only specials, new products, and offers!

    Request CatalogJoin Email List