Homeโ€บ Transmission > Hardware, Fasteners and Fittingsโ€บ Pioneer Cables FWS-25 Flywheel Shim
Part #: FWS-25

Pioneer Cables FWS-25 Flywheel Shim

272 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing โ€” free returns if it doesn't
$29.42Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock ยท Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement โ€” Bolt-on fit, no modifications needed
Fitment: GMC, Chevrolet, Oldsmobile, Buick, Pontiac, and Cadillac, Safari, Astro, Blazer, Express 1500, Express 2500, S10, Savana 1500, Savana 2500, Sonoma, Tracker, Jimmy, Bravada, C1500, Skylark, Cavalier, G10, G20, G30, C2500, G1500, G2500, G3500, Achieva, Grand Am, Sunfire, Beretta, S10 Blazer, Sunbird, Caprice, Typhoon, S15 Jimmy, Syclone, Cutlass Calais, Cutlass Supreme, Grand Prix, LeMans, Optima, Skyhawk, Corsica, Tempest, Firenza, Calais, Cimarron, J2000 Sunbird, S15, J2000, Monza, Vega, Starfire, and Astre
Easy Returns โ€” Return within 60 days for a full refund
Fast Shipping โ€” Most orders ship same business day before 1pm CST

Precision Flywheel Shim for GM Vehicles

The Pioneer Cables FWS-25 flywheel shim offers a precise 0.025-inch thickness designed to ensure optimal flywheel alignment in select GM models. This component is essential for maintaining proper transmission function and reducing drivetrain vibrations.

  • Thickness: 0.025 inches for accurate flywheel spacing
  • Compatible with multiple GM makes including Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac
  • Part number FWS-25 for easy identification and replacement
  • Designed for use in various models such as Blazer, Caprice, Grand Prix, and S10
  • Durable construction to maintain consistent performance under stress

Detailed Product Description

The Pioneer Cables FWS-25 flywheel shim is engineered to provide a precise 0.025-inch thickness, which is critical for adjusting the flywheel position relative to the transmission input shaft. This shim helps correct endplay and alignment issues that can arise during flywheel installation or replacement. Compatible with a wide range of GM vehicles, including Buick Achieva, Cadillac Calais, Chevrolet Blazer, GMC Jimmy, Oldsmobile Cutlass Supreme, and Pontiac Grand Am, this shim supports proper drivetrain operation and helps prevent premature wear on transmission components.

Common Applications and Issues Addressed

  • Corrects flywheel-to-transmission input shaft clearance
  • Reduces transmission input shaft bearing wear
  • Eliminates clutch chatter caused by misalignment
  • Prevents vibration and noise from improper flywheel spacing
  • Supports smooth clutch engagement and disengagement

Installation Notes and Tips

  • Verify flywheel shim thickness requirements based on vehicle service manual
  • Ensure clean mating surfaces before installation to avoid misalignment
  • Use proper torque specifications when reinstalling flywheel bolts
  • Inspect flywheel and clutch components for wear during installation
  • Consult vehicle-specific guides for flywheel shim placement and stacking

Quality Assurance and Warranty

Pioneer Cables manufactures the FWS-25 flywheel shim to meet industry standards for durability and precision. Each shim undergoes quality control inspections to ensure consistent thickness and material integrity. While specific warranty details are not provided, Pioneer Cables products are designed for reliable performance in automotive transmission applications.

BrandPioneer Cables
Part NumberFWS-25
Thickness0.025

This part fits 272 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005GMCSafari4.3LV6N/AWidth: 0.025"
2004ChevroletAstro4.3LV6N/AWidth: 0.025"
2004ChevroletBlazer4.3LV6N/AWidth: 0.025"
2004ChevroletExpress 15004.3LV6N/AWidth: 0.025"
2004ChevroletExpress 25004.3LV6N/AWidth: 0.025"
2004ChevroletS104.3LV6N/AWidth: 0.025"
2004GMCSafari4.3LV6N/AWidth: 0.025"
2004GMCSavana 15004.3LV6N/AWidth: 0.025"
2004GMCSavana 25004.3LV6N/AWidth: 0.025"
2004GMCSonoma4.3LV6N/AWidth: 0.025"
2003ChevroletAstro4.3LV6N/AWidth: 0.025"
2003ChevroletBlazer4.3LV6N/AWidth: 0.025"
2003ChevroletExpress 15004.3LV6N/AWidth: 0.025"
2003ChevroletExpress 25004.3LV6N/AWidth: 0.025"
2003ChevroletS104.3LV6N/AWidth: 0.025"
2003ChevroletTracker2.0LL4N/AWidth: 0.025"
2003GMCSafari4.3LV6N/AWidth: 0.025"
2003GMCSavana 15004.3LV6N/AWidth: 0.025"
2003GMCSavana 25004.3LV6N/AWidth: 0.025"
2002ChevroletAstro4.3LV6N/AWidth: 0.025"
2002ChevroletBlazer4.3LV6N/AWidth: 0.025"
2002ChevroletExpress 15004.3LV6N/AWidth: 0.025"
2002ChevroletExpress 25004.3LV6N/AWidth: 0.025"
2002ChevroletS104.3LV6N/AWidth: 0.025"
2002ChevroletTracker2.0LL4N/AWidth: 0.025"
2002GMCSafari4.3LV6N/AWidth: 0.025"
2002GMCSavana 15004.3LV6N/AWidth: 0.025"
2002GMCSavana 25004.3LV6N/AWidth: 0.025"
2001ChevroletAstro4.3LV6N/AWidth: 0.025"
2001ChevroletBlazer4.3LV6N/AWidth: 0.025"
2001ChevroletExpress 15004.3LV6N/AWidth: 0.025"
2001ChevroletExpress 25004.3LV6N/AWidth: 0.025"
2001ChevroletS104.3LV6N/AWidth: 0.025"
2001ChevroletTracker2.0LL4N/AWidth: 0.025"
2001GMCJimmy4.3LV6N/AWidth: 0.025"
2001GMCSafari4.3LV6N/AWidth: 0.025"
2001GMCSavana 15004.3LV6N/AWidth: 0.025"
2001GMCSavana 25004.3LV6N/AWidth: 0.025"
2001OldsmobileBravada4.3LV6N/AWidth: 0.025"
2000ChevroletAstro4.3LV6N/AWidth: 0.025"
2000ChevroletBlazer4.3LV6N/AWidth: 0.025"
2000ChevroletExpress 15004.3LV6N/AWidth: 0.025"
2000ChevroletExpress 25004.3LV6N/AWidth: 0.025"
2000ChevroletS104.3LV6N/AWidth: 0.025"
2000ChevroletTracker2.0LL4N/AWidth: 0.025"
2000GMCJimmy4.3LV6N/AWidth: 0.025"
2000GMCSafari4.3LV6N/AWidth: 0.025"
2000GMCSavana 15004.3LV6N/AWidth: 0.025"
2000GMCSavana 25004.3LV6N/AWidth: 0.025"
2000OldsmobileBravada4.3LV6N/AWidth: 0.025"
1999ChevroletAstro4.3LV6N/AWidth: 0.025"
1999ChevroletBlazer4.3LV6N/AWidth: 0.025"
1999ChevroletExpress 15004.3LV6N/AWidth: 0.025"
1999ChevroletExpress 25004.3LV6N/AWidth: 0.025"
1999ChevroletS104.3LV6N/AWidth: 0.025"
1999ChevroletTracker2.0LL4N/AWidth: 0.025"
1999GMCJimmy4.3LV6N/AWidth: 0.025"
1999GMCSafari4.3LV6N/AWidth: 0.025"
1999GMCSavana 15004.3LV6N/AWidth: 0.025"
1999GMCSavana 25004.3LV6N/AWidth: 0.025"
1999OldsmobileBravada4.3LV6N/AWidth: 0.025"
1998ChevroletAstro4.3LV6N/AWidth: 0.025"
1998ChevroletBlazer4.3LV6N/AWidth: 0.025"
1998ChevroletExpress 15004.3LV6N/AWidth: 0.025"
1998ChevroletExpress 25004.3LV6N/AWidth: 0.025"
1998ChevroletS104.3LV6N/AWidth: 0.025"
1998GMCC15004.3LV6N/AWidth: 0.025"
1998GMCJimmy4.3LV6N/AWidth: 0.025"
1998GMCSafari4.3LV6N/AWidth: 0.025"
1998GMCSavana 15004.3LV6N/AWidth: 0.025"
1998GMCSavana 25004.3LV6N/AWidth: 0.025"
1998OldsmobileBravada4.3LV6N/AWidth: 0.025"
1997ChevroletAstro4.3LV6N/AWidth: 0.025"
1997ChevroletBlazer4.3LV6N/AWidth: 0.025"
1997ChevroletExpress 15004.3LV6N/AWidth: 0.025"
1997ChevroletExpress 25004.3LV6N/AWidth: 0.025"
1997ChevroletS104.3LV6N/AWidth: 0.025"
1997GMCC15004.3LV6N/AWidth: 0.025"
1997GMCJimmy4.3LV6N/AWidth: 0.025"
1997GMCSafari4.3LV6N/AWidth: 0.025"
1997GMCSavana 15004.3LV6N/AWidth: 0.025"
1997GMCSavana 25004.3LV6N/AWidth: 0.025"
1997OldsmobileBravada4.3LV6N/AWidth: 0.025"
1996ChevroletAstro4.3LV6N/AWidth: 0.025"
1996ChevroletBlazer4.3LV6N/AWidth: 0.025"
1996ChevroletExpress 15004.3LV6N/AWidth: 0.025"
1996ChevroletExpress 25004.3LV6N/AWidth: 0.025"
1996ChevroletS104.3LV6N/AWidth: 0.025"
1996GMCC15004.3LV6N/AWidth: 0.025"
1996GMCJimmy4.3LV6N/AWidth: 0.025"
1996GMCSafari4.3LV6N/AWidth: 0.025"
1996GMCSavana 15004.3LV6N/AWidth: 0.025"
1996GMCSavana 25004.3LV6N/AWidth: 0.025"
1996OldsmobileBravada4.3LV6N/AWidth: 0.025"
1995BuickSkylark2.3LL4N/AWidth: 0.025"
1995ChevroletAstro4.3LV6N/AWidth: 0.025"
1995ChevroletBlazer4.3LV6N/AWidth: 0.025"
1995ChevroletCavalier2.3LL4N/AWidth: 0.025"
1995ChevroletG104.3LV6N/AWidth: 0.025"
1995ChevroletG204.3LV6N/AWidth: 0.025"
1995ChevroletG304.3LV6N/AWidth: 0.025"
1995ChevroletS104.3LV6N/AWidth: 0.025"
1995GMCC15004.3LV6N/AWidth: 0.025"
1995GMCC25004.3LV6N/AWidth: 0.025"
1995GMCG15004.3LV6N/AWidth: 0.025"
1995GMCG25004.3LV6N/AWidth: 0.025"
1995GMCG35004.3LV6N/AWidth: 0.025"
1995GMCJimmy4.3LV6N/AWidth: 0.025"
1995GMCSafari4.3LV6N/AWidth: 0.025"
1995OldsmobileAchieva2.3LL4N/AWidth: 0.025"
1995PontiacGrand Am2.3LL4N/AWidth: 0.025"
1995PontiacSunfire2.3LL4N/AWidth: 0.025"
1994BuickSkylark2.3LL4N/AWidth: 0.025"
1994ChevroletAstro4.3LV6N/AWidth: 0.025"
1994ChevroletG104.3LV6N/AWidth: 0.025"
1994ChevroletG204.3LV6N/AWidth: 0.025"
1994ChevroletG304.3LV6N/AWidth: 0.025"
1994ChevroletS104.3LV6N/AWidth: 0.025"
1994ChevroletS10 Blazer4.3LV6N/AWidth: 0.025"
1994GMCC15004.3LV6N/AWidth: 0.025"
1994GMCC25004.3LV6N/AWidth: 0.025"
1994GMCG15004.3LV6N/AWidth: 0.025"
1994GMCG25004.3LV6N/AWidth: 0.025"
1994GMCG35004.3LV6N/AWidth: 0.025"
1994GMCJimmy4.3LV6N/AWidth: 0.025"
1994GMCSafari4.3LV6N/AWidth: 0.025"
1994OldsmobileAchieva2.3LL4N/AWidth: 0.025"
1994OldsmobileBravada4.3LV6N/AWidth: 0.025"
1994PontiacGrand Am2.3LL4N/AWidth: 0.025"
1994PontiacSunbird2.0LL4N/AWidth: 0.025"
1993BuickSkylark2.3LL4N/AWidth: 0.025"
1993ChevroletAstro4.3LV6N/AWidth: 0.025"
1993ChevroletCaprice4.3LV6N/AWidth: 0.025"
1993ChevroletG104.3LV6N/AWidth: 0.025"
1993ChevroletG204.3LV6N/AWidth: 0.025"
1993ChevroletG304.3LV6N/AWidth: 0.025"
1993ChevroletS10 Blazer4.3LV6N/AWidth: 0.025"
1993GMCC15004.3LV6N/AWidth: 0.025"
1993GMCC25004.3LV6N/AWidth: 0.025"
1993GMCG15004.3LV6N/AWidth: 0.025"
1993GMCG25004.3LV6N/AWidth: 0.025"
1993GMCG35004.3LV6N/AWidth: 0.025"
1993GMCJimmy4.3LV6N/AWidth: 0.025"
1993GMCSafari4.3LV6N/AWidth: 0.025"
1993OldsmobileAchieva2.3LL4N/AWidth: 0.025"
1993OldsmobileBravada4.3LV6N/AWidth: 0.025"
1993PontiacGrand Am2.3LL4N/AWidth: 0.025"
1993PontiacSunbird2.0LL4N/AWidth: 0.025"
1992BuickSkylark2.3LL4N/AWidth: 0.025"
1992ChevroletAstro4.3LV6N/AWidth: 0.025"
1992ChevroletCaprice4.3LV6N/AWidth: 0.025"
1992ChevroletG104.3LV6N/AWidth: 0.025"
1992ChevroletG204.3LV6N/AWidth: 0.025"
1992ChevroletG304.3LV6N/AWidth: 0.025"
1992ChevroletS10 Blazer4.3LV6N/AWidth: 0.025"
1992GMCC15004.3LV6N/AWidth: 0.025"
1992GMCC25004.3LV6N/AWidth: 0.025"
1992GMCG15004.3LV6N/AWidth: 0.025"
1992GMCG25004.3LV6N/AWidth: 0.025"
1992GMCG35005.7LV8N/AWidth: 0.025"
1992GMCG35004.3LV6N/AWidth: 0.025"
1992GMCJimmy4.3LV6N/AWidth: 0.025"
1992GMCSafari4.3LV6N/AWidth: 0.025"
1992OldsmobileAchieva2.3LL4N/AWidth: 0.025"
1992OldsmobileBravada4.3LV6N/AWidth: 0.025"
1992PontiacGrand Am2.3LL4N/AWidth: 0.025"
1992PontiacSunbird2.0LL4N/AWidth: 0.025"
1991BuickSkylark2.3LL4N/AWidth: 0.025"
1991ChevroletAstro4.3LV6N/AWidth: 0.025"
1991ChevroletG104.3LV6N/AWidth: 0.025"
1991ChevroletG204.3LV6N/AWidth: 0.025"
1991ChevroletG304.3LV6N/AWidth: 0.025"
1991ChevroletS10 Blazer4.3LV6N/AWidth: 0.025"
1991GMCC15004.3LV6N/AWidth: 0.025"
1991GMCC25004.3LV6N/AWidth: 0.025"
1991GMCG15004.3LV6N/AWidth: 0.025"
1991GMCG25004.3LV6N/AWidth: 0.025"
1991GMCG35004.3LV6N/AWidth: 0.025"
1991GMCS15 Jimmy4.3LV6N/AWidth: 0.025"
1991GMCSafari4.3LV6N/AWidth: 0.025"
1991OldsmobileBravada4.3LV6N/AWidth: 0.025"
1991OldsmobileCutlass Calais2.3LL4N/AWidth: 0.025"
1991OldsmobileCutlass Supreme2.3LL4N/AWidth: 0.025"
1991PontiacGrand Am2.3LL4N/AWidth: 0.025"
1991PontiacGrand Prix2.3LL4N/AWidth: 0.025"
1991PontiacSunbird2.0LL4N/AWidth: 0.025"
1990BuickSkylark2.3LL4N/AWidth: 0.025"
1990ChevroletAstro4.3LV6N/AWidth: 0.025"
1990ChevroletCaprice4.3LV6N/AWidth: 0.025"
1990ChevroletS10 Blazer4.3LV6N/AWidth: 0.025"
1990GMCC15004.3LV6N/AWidth: 0.025"
1990GMCC25004.3LV6N/AWidth: 0.025"
1990GMCG15004.3LV6N/AWidth: 0.025"
1990GMCG25004.3LV6N/AWidth: 0.025"
1990GMCG35004.3LV6N/AWidth: 0.025"
1990GMCS15 Jimmy4.3LV6N/AWidth: 0.025"
1990GMCSafari4.3LV6N/AWidth: 0.025"
1990OldsmobileCutlass Calais2.3LL4N/AWidth: 0.025"
1990OldsmobileCutlass Supreme2.3LL4N/AWidth: 0.025"
1990PontiacGrand Am2.3LL4N/AWidth: 0.025"
1990PontiacGrand Prix2.3LL4N/AWidth: 0.025"
1990PontiacLeMans2.0LL4N/AWidth: 0.025"
1990PontiacOptima2.0LL4N/AWidth: 0.025"
1990PontiacSunbird2.0LL4N/AWidth: 0.025"
1989BuickSkyhawk2.0LL4N/AWidth: 0.025"
1989BuickSkylark2.3LL4N/AWidth: 0.025"
1989ChevroletCavalier2.0LL4N/AWidth: 0.025"
1989ChevroletCorsica2.0LL4N/AWidth: 0.025"
1989GMCC15004.3LV6N/AWidth: 0.025"
1989GMCC25004.3LV6N/AWidth: 0.025"
1989GMCG15004.3LV6N/AWidth: 0.025"
1989GMCG25004.3LV6N/AWidth: 0.025"
1989GMCG35004.3LV6N/AWidth: 0.025"
1989GMCSafari4.3LV6N/AWidth: 0.025"
1989OldsmobileCutlass Calais2.3LL4N/AWidth: 0.025"
1989PontiacGrand Am2.3LL4N/AWidth: 0.025"
1989PontiacLeMans2.0LL4N/AWidth: 0.025"
1989PontiacOptima2.0LL4N/AWidth: 0.025"
1989PontiacSunbird2.0LL4N/AWidth: 0.025"
1989PontiacTempest2.0LL4N/AWidth: 0.025"
1988BuickSkyhawk2.0LL4N/AWidth: 0.025"
1988BuickSkylark2.3LL4N/AWidth: 0.025"
1988ChevroletCavalier2.0LL4N/AWidth: 0.025"
1988ChevroletCorsica2.0LL4N/AWidth: 0.025"
1988OldsmobileCutlass Calais2.3LL4N/AWidth: 0.025"
1988OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1988PontiacGrand Am2.3LL4N/AWidth: 0.025"
1988PontiacOptima2.0LL4N/AWidth: 0.025"
1988PontiacSunbird2.0LL4N/AWidth: 0.025"
1988PontiacTempest2.0LL4N/AWidth: 0.025"
1987BuickSkyhawk2.0LL4N/AWidth: 0.025"
1987ChevroletCavalier2.0LL4N/AWidth: 0.025"
1987ChevroletCorsica2.0LL4N/AWidth: 0.025"
1987OldsmobileCalais2.3LL4N/AWidth: 0.025"
1987OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1987PontiacSunbird2.0LL4N/AWidth: 0.025"
1987PontiacTempest2.0LL4N/AWidth: 0.025"
1986BuickSkyhawk2.0LL4N/AWidth: 0.025"
1986CadillacCimarron2.0LL4N/AWidth: 0.025"
1986ChevroletCavalier2.0LL4N/AWidth: 0.025"
1986OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1986PontiacSunbird2.0LL4N/AWidth: 0.025"
1985BuickSkyhawk2.0LL4N/AWidth: 0.025"
1985CadillacCimarron2.0LL4N/AWidth: 0.025"
1985ChevroletCavalier2.0LL4N/AWidth: 0.025"
1985OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1985PontiacJ2000 Sunbird2.0LL4N/AWidth: 0.025"
1984BuickSkyhawk2.0LL4N/AWidth: 0.025"
1984CadillacCimarron2.0LL4N/AWidth: 0.025"
1984ChevroletCavalier2.0LL4N/AWidth: 0.025"
1984ChevroletS102.0LL4N/AWidth: 0.025"
1984ChevroletS10 Blazer2.0LL4N/AWidth: 0.025"
1984GMCS152.0LL4N/AWidth: 0.025"
1984GMCS15 Jimmy2.0LL4N/AWidth: 0.025"
1984OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1984PontiacJ2000 Sunbird2.0LL4N/AWidth: 0.025"
1983BuickSkyhawk2.0LL4N/AWidth: 0.025"
1983CadillacCimarron2.0LL4N/AWidth: 0.025"
1983ChevroletCavalier2.0LL4N/AWidth: 0.025"
1983ChevroletS102.0LL4N/AWidth: 0.025"
1983ChevroletS10 Blazer2.0LL4N/AWidth: 0.025"
1983GMCS152.0LL4N/AWidth: 0.025"
1983GMCS15 Jimmy2.0LL4N/AWidth: 0.025"
1983OldsmobileFirenza2.0LL4N/AWidth: 0.025"
1983PontiacJ20002.0LL4N/AWidth: 0.025"
1977ChevroletMonza2.3LL4N/AWidth: 0.025"
1977OldsmobileStarfire2.3LL4N/AWidth: 0.025"
1977PontiacSunbird2.3LL4N/AWidth: 0.025"
1976ChevroletMonza2.3LL4N/AWidth: 0.025"
1976OldsmobileStarfire2.3LL4N/AWidth: 0.025"
1976PontiacSunbird2.3LL4N/AWidth: 0.025"
1975ChevroletMonza2.3LL4N/AWidth: 0.025"

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.