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| SKU | EAT912A317 |
| MPN | 912A317 |
| Certifications | None |
| Wheel Size (inches) | 7.5in/7.625in |
| Offset (mm) | 3.23 & Up Ratio |
| Bolt Pattern / PCD | 28 Spline |
| Center Bore (mm) | 1.20in Axle Shaft Diameter |
| Spoke Style | Truetrac |
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1988-1989 | Buick | Riviera | T-Type |
| 1992-1995 | Buick | Roadmaster | Base |
| 1996 | Buick | Roadmaster | Collector's Edition |
| 1991-1995 | Buick | Roadmaster | Estate Wagon |
| 1996 | Buick | Roadmaster | Estate Wagon Collector's Edition |
| 1992-1995 | Buick | Roadmaster | Limited |
| 1988-1989,1994-1996 | Chevrolet | Corsica | Base |
| 1988,1990-1993 | Chevrolet | Corsica | LT |
| 1989-1990,1992 | Chevrolet | Corsica | LTZ |
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1988-1989 | GMC | S15 Jimmy | Timberline |
| 1988-1997 | GMC | Safari | Base |
| 1993 | GMC | Safari | GT |
| 1995-1999 | GMC | Safari | SL |
| 1988-1999 | GMC | Safari | SLE |
| 1988-1999 | GMC | Safari | SLT |
| 1988-1990,1994-1998 | GMC | Safari | SLX |
| 2002 | GMC | Sierra 1500 | Base |
| 1988-1990 | Buick | Electra | Limited |
| 1988-1990 | Buick | Electra | Park Avenue |
| 1989-1990 | Buick | Electra | Park Avenue Ultra |
| 1988-1990 | Buick | Electra | T-Type |
| 1988-1991 | Buick | LeSabre | Base |
| 1988-2002 | Buick | LeSabre | Custom |
| 1988-1990 | Buick | LeSabre | Estate Wagon |
| 1988-1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991-1993 | Chevrolet | Caprice | Classic LTZ |
| 1988-1990,1995-2002 | Chevrolet | Cavalier | Base |
| 1995-2002 | Chevrolet | Cavalier | LS |
| 2002 | Chevrolet | Cavalier | LS Sport |
| 1988-1990 | GMC | S15 | High Sierra |
| 1988-1990 | GMC | S15 | Sierra Classic |
| 1988-1991 | GMC | S15 Jimmy | Base |
| 1988-1990 | GMC | S15 Jimmy | Gypsy |
| 1988-1990 | GMC | S15 Jimmy | Sierra Classic |
| 1991 | GMC | S15 Jimmy | SLE |
| 1991 | GMC | S15 Jimmy | SLS |
| 1991 | GMC | S15 Jimmy | SLT |
| 1988-1990 | Oldsmobile | Cutlass Ciera | International |
| 1988 | Oldsmobile | Cutlass Ciera | LS |
| 1988,1990-1994 | Oldsmobile | Cutlass Ciera | S |
| 1988-1994 | Oldsmobile | Cutlass Ciera | SL |
| 1989-1990,1993-1994 | Oldsmobile | Cutlass Cruiser | Base |
| 1988-1992 | Oldsmobile | Toronado | Base |
| 1988-1992 | Oldsmobile | Toronado | Trofeo |
| 1988-1989 | Pontiac | 6000 | Base |
| 1988-1991 | Pontiac | 6000 | LE |
| 1988 | Pontiac | 6000 | SE |
| 1989-1991 | Pontiac | 6000 | Special Edition |
| 1988-1989 | Pontiac | 6000 | STE |
| 1988-1991 | Pontiac | Bonneville | LE |
| 1988-1994,1997-1999 | Chevrolet | Cavalier | RS |
| 1988-1994 | Chevrolet | Cavalier | VL |
| 1988-2002 | Chevrolet | Cavalier | Z24 |
| 1988-1990 | Chevrolet | Celebrity | Base |
| 1989 | Chevrolet | Celebrity | CL |
| 1988-1990 | Chevrolet | Celebrity | Eurosport |
| 1988-1994 | Pontiac | Sunbird | SE |
| 1991 | Pontiac | Sunbird | Value Leader |
| 1995-2002 | Pontiac | Sunfire | GT |
| 1995-2002 | Pontiac | Sunfire | SE |
| 1988-1997 | Oldsmobile | Cutlass Supreme | Base |
| 1988 | Oldsmobile | Cutlass Supreme | Classic |
| 1988 | Oldsmobile | Cutlass Supreme | Classic Brougham |
| 1988 | Oldsmobile | Cutlass Supreme | Indy 500 Pace Car |
| 1988-1993 | Oldsmobile | Cutlass Supreme | International |
| 1988-2002 | Buick | Century | Custom |
| 1988-1989 | Buick | Century | Estate Wagon |
| 1988-1993,1996-2002 | Buick | Century | Limited |
| 1991-1996 | Buick | Century | Special |
| 1991-1996 | Buick | Commercial Chassis | Base |
| 1988-1989 | Buick | Electra | Estate Wagon |
| 1988-2002 | Buick | LeSabre | Limited |
| 1991-2002 | Buick | Park Avenue | Base |
| 1991-2002 | Buick | Park Avenue | Ultra |
| 1988-1991 | Buick | Reatta | Base |
| 1998 | Buick | Regal | 25th Anniversary Edition |
| 1988-1996 | Buick | Regal | Custom |
| 1989-1996 | Buick | Regal | Gran Sport |
| 1988-2002 | Pontiac | Bonneville | SE |
| 2000-2002 | Pontiac | Bonneville | SLE |
| 1988-1999 | Pontiac | Bonneville | SSE |
| 1992-2002 | Pontiac | Bonneville | SSEi |
| 1988 | Pontiac | Fiero | Formula |
| 1988 | Pontiac | Fiero | GT |
| 1988 | Pontiac | Fiero | Sport |
| 1988 | Pontiac | Fiero | Value Leader |
| 1988-2002 | Pontiac | Firebird | Base |
| 1989-2002 | Pontiac | Firebird | Formula |
| 1988-2002 | Pontiac | Firebird | Trans Am |
| 1994 | Pontiac | Firebird | Trans Am GT |
| 1989-1992 | Pontiac | Firebird | Trans Am GTA |
| 1989 | Pontiac | Firebird | Trans Am GTA SE |
| 1988 | Pontiac | Grand Am | Base |
| 1988-2002 | Pontiac | Grand Prix | SE |
| 1990-1993 | Pontiac | Grand Prix | STE |
| 1988 | Pontiac | LeMans | Aerocoupe |
| 1988 | Pontiac | LeMans | Aerocoupe YL |
| 1988 | Pontiac | LeMans | Base |
| 1989-1990 | Pontiac | LeMans | GSE |
| 1989-1992 | Pontiac | LeMans | LE |
| 1988-1989,1992-1993 | Pontiac | LeMans | SE |
| 1988-2005 | Chevrolet | Astro | LT |
| 1988-1996 | Chevrolet | Beretta | Base |
| 1989-1993 | Chevrolet | Beretta | GT |
| 1990-1993 | Chevrolet | Beretta | GTZ |
| 1990 | Chevrolet | Beretta | Indianapolis 500 Pace Car |
| 1994-1996 | Chevrolet | Beretta | Z26 |
| 1988,1993-2002 | Chevrolet | Camaro | Base |
| 1988 | Chevrolet | Monte Carlo | Base |
| 1999 | Chevrolet | Monte Carlo | Indianapolis 500 Pace Car |
| 1988,1995-2002 | Chevrolet | Monte Carlo | LS |
| 1988,2000-2002 | Chevrolet | Monte Carlo | SS |
| 1988 | Chevrolet | Spectrum | CL Plus |
| 1988 | Chevrolet | Spectrum | Express |
| 1988 | Chevrolet | Spectrum | Turbo |
| 1988 | Chevrolet | Sprint | Base |
| 1988 | Chevrolet | Sprint | ER |
| 1988 | Chevrolet | Sprint | Metro |
| 1988 | Chevrolet | Sprint | Turbo |
| 1988-1990 | GMC | S15 | Base |
| 1988 | GMC | S15 | Gypsy |
| 1988 | Oldsmobile | Firenza | Cruiser |
| 1998 | Oldsmobile | Intrigue | Base |
| 1998-2002 | Oldsmobile | Intrigue | GL |
| 1998-2002 | Oldsmobile | Intrigue | GLS |
| 1999-2002 | Oldsmobile | Intrigue | GX |
| 1996-1999 | Oldsmobile | LSS | Base |
| 1997-1998 | Oldsmobile | Regency | Base |
| 1989-1991 | Oldsmobile | Cutlass Calais | S |
| 1988-1991 | Oldsmobile | Cutlass Calais | SL |
| 1988-1993,1995-1996 | Oldsmobile | Cutlass Ciera | Base |
| 1988 | Oldsmobile | Cutlass Ciera | Brougham |
| 1989-1990 | Oldsmobile | Cutlass Ciera | GT |
| 1990-1994 | Chevrolet | Lumina | Euro |
| 1995-1999 | Chevrolet | Lumina | LS |
| 1997-1999 | Chevrolet | Lumina | LTZ |
| 1991-1994 | Chevrolet | Lumina | Z34 |
| 1997-2002 | Chevrolet | Malibu | Base |
| 1997-2002 | Chevrolet | Malibu | LS |
| 1998-2000 | Chevrolet | Metro | Base |
| 1998-2001 | Chevrolet | Metro | LSi |
| 1991-1993 | GMC | Sonoma | Base |
| 1992 | GMC | Sonoma | GT |
| 1994-2004 | GMC | Sonoma | SL |
| 1991-2001 | GMC | Sonoma | SLE |
| 1993-2004 | GMC | Sonoma | SLS |
| 1991 | GMC | Syclone | Base |
| 1988-1992 | Isuzu | Pickup | 1 Ton |
| 1988-1992 | Isuzu | Pickup | LS |
| 1988-1995 | Isuzu | Pickup | S |
| 1989-1990 | Isuzu | Pickup | XS |
| 1991-2002 | Isuzu | Rodeo | LS |
| 1999-2002 | Isuzu | Rodeo | LSE |
| 1991-2002 | Isuzu | Rodeo | S |
| 2001-2002 | Isuzu | Rodeo | S V6 |
| 1991-1992 | Isuzu | Rodeo | XS |
| 1999 | Oldsmobile | 88 | 50th Anniversary Edition |
| 1992-1999 | Oldsmobile | 88 | Royale |
| 1992-1999 | Oldsmobile | 88 | Royale LS |
| 1988-1993 | Pontiac | LeMans | Value Leader |
| 1988-1989 | Pontiac | Safari | Base |
| 1988 | Pontiac | Sunbird | Base |
| 1988-1994 | Pontiac | Sunbird | GT |
| 1989-1991,1994 | Pontiac | Sunbird | LE |
| 1992-1993 | Pontiac | Sunbird | LE Value Leader |
| 1992-1994 | Oldsmobile | Cutlass Supreme | S |
| 1988-1991,1995-1997 | Oldsmobile | Cutlass Supreme | SL |
| 1988-1991 | Oldsmobile | Delta 88 | Royale |
| 1988-1991 | Oldsmobile | Delta 88 | Royale Brougham |
| 1988 | Oldsmobile | Firenza | Base |
| 1992-1996,1998 | Oldsmobile | Achieva | S |
| 1992,1994,1996-1997 | Oldsmobile | Achieva | SC |
| 1992-1993 | Oldsmobile | Achieva | SCX |
| 1992-1997 | Oldsmobile | Achieva | SL |
| 1999-2002 | Oldsmobile | Alero | GL |
| 1992-2002 | Pontiac | Grand Am | GT |
| 2000-2002 | Pontiac | Grand Am | GT1 |
| 1988-1991 | Pontiac | Grand Am | LE |
| 1988-2002 | Pontiac | Grand Am | SE |
| 2000-2002 | Pontiac | Grand Am | SE1 |
| 2000 | Pontiac | Grand Am | SE2 |
| 1991 | Pontiac | Grand Am | Value Leader |
| 1988-1989,1996 | Pontiac | Grand Prix | Base |
| 1992 | Chevrolet | Camaro | Z28 Heritage Edition |
| 1998-2002 | Chevrolet | Camaro | Z28 SS |
| 1988-1992 | Chevrolet | Caprice | Base |
| 1988-1996 | Chevrolet | Caprice | Classic |
| 1988-1990 | Chevrolet | Caprice | Classic Brougham |
| 1993-1994 | Chevrolet | Caprice | Classic LS |
| 1988 | Oldsmobile | Cutlass Cruiser | Brougham LS |
| 1988 | Oldsmobile | Cutlass Cruiser | LS |
| 1991-1994 | Oldsmobile | Cutlass Cruiser | S |
| 1988-1992 | Oldsmobile | Cutlass Cruiser | SL |
| 1994 | Oldsmobile | Cutlass Cruiser | Special Edition |
| 1993-1997,1988-1989 | Buick | Skylark | Limited |
| 1990-1991 | Buick | Skylark | Luxury Edition |
| 1996 | Buick | Skylark | Olympic Gold Edition |
| 1988-2005 | Chevrolet | Astro | Base |
| 1988-1995 | Chevrolet | Astro | CL |
| 1988-1995 | Chevrolet | Astro | CS |
| 1996-2005 | Chevrolet | Astro | LS |
| 1993 | Chevrolet | Camaro | Indianapolis 500 Pace Car |
| 1988-1990 | Chevrolet | Camaro | Iroc-Z |
| 1989-1992,1996-1997 | Chevrolet | Camaro | RS |
| 1992 | Chevrolet | Camaro | RS Heritage Edition |
| 1991-2002 | Chevrolet | Camaro | Z28 |
| 1993 | Chevrolet | Corvette | 40th Anniversary Edition |
| 1988-2002 | Chevrolet | Corvette | Base |
| 1996 | Chevrolet | Corvette | Collector's Edition |
| 1996 | Chevrolet | Corvette | Grand Sport |
| 1995,1998 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1994-1998 | Chevrolet | S10 | SS |
| 1988-1992 | Chevrolet | S10 | Tahoe |
| 1999-2003 | Chevrolet | S10 | Xtreme |
| 1994-2003 | Chevrolet | S10 | ZR2 |
| 2002-2004 | Chevrolet | S10 | ZR5 |
| 1988-1994 | Chevrolet | S10 Blazer | Base |
| 1988-1989 | Chevrolet | S10 Blazer | High Country |
| 1994 | Chevrolet | S10 Blazer | LT |
| 1988-1990,1992 | Chevrolet | S10 Blazer | Sport |
| 1988,1990-1994 | Chevrolet | S10 Blazer | Tahoe |
| 1991-1994 | Chevrolet | S10 Blazer | Tahoe LT |
| 1999-2002 | Chevrolet | Silverado 1500 | Base |
| 1995 | Oldsmobile | 88 | Royale LSS |
| 1988-1990,1992-1994 | Oldsmobile | 98 | Regency |
| 1988-1990 | Oldsmobile | 98 | Regency Brougham |
| 1991-1996 | Oldsmobile | 98 | Regency Elite |
| 1988-1990 | Oldsmobile | 98 | Regency Touring |
| 1991-1993 | Oldsmobile | 98 | Touring |
| 1996 | Buick | Roadmaster | Limited Collector's Edition |
| 1988-1989 | Buick | Skyhawk | Custom |
| 1988-1989 | Buick | Skyhawk | SE |
| 1990-1991 | Buick | Skylark | Base |
| 1988-1998 | Buick | Skylark | Custom |
| 1990-1997 | Buick | Skylark | Gran Sport |
| 1991-1993,1995-2002 | Pontiac | Grand Prix | GT |
| 1992-1993,1995-2002 | Pontiac | Grand Prix | GTP |
| 1988-1993 | Pontiac | Grand Prix | LE |
| 1990 | Pontiac | Grand Prix | Mclaren |
| 1997-1998 | Oldsmobile | Cutlass | Base |
| 1999 | Oldsmobile | Cutlass | GL |
| 1997-1999 | Oldsmobile | Cutlass | GLS |
| 1988-1991 | Oldsmobile | Cutlass Calais | Base |
| 1988-1991 | Oldsmobile | Cutlass Calais | GT |
| 1988-1991 | Oldsmobile | Cutlass Calais | International |
| 1997-2002 | Buick | Regal | GS |
| 2000 | Buick | Regal | GSE |
| 1988-1996 | Buick | Regal | Limited |
| 1997-2002 | Buick | Regal | LS |
| 2000 | Buick | Regal | LSE |
| 1996 | Buick | Regal | Olympic Gold Edition |
| 1995-1999 | Buick | Riviera | Base |
| 1988-1993 | Buick | Riviera | Luxury |
| 1998-2002 | Chevrolet | Prizm | Base |
| 1998-2002 | Chevrolet | Prizm | LSi |
| 1991 | Chevrolet | S10 | Baja |
| 1988-2003 | Chevrolet | S10 | Base |
| 1988-1990 | Chevrolet | S10 | Durango |
| 1992-1993 | Chevrolet | S10 | EL |
| 1994-2004 | Chevrolet | S10 | LS |
| 1988-1989 | Chevrolet | S10 | Sport |
| 2001-2002 | Chevrolet | Corvette | Z06 |
| 1990-1995 | Chevrolet | Corvette | ZR-1 |
| 2000-2002 | Chevrolet | Impala | Base |
| 2000-2002 | Chevrolet | Impala | LS |
| 1994-1996 | Chevrolet | Impala | SS |
| 1990-2001 | Chevrolet | Lumina | Base |
| 1999-2002 | Chevrolet | Silverado 1500 | LS |
| 1999-2002 | Chevrolet | Silverado 1500 | LT |
| 2002 | Chevrolet | Silverado 1500 | WT |
| 2001-2002 | Chevrolet | Silverado 1500 HD | LS |
| 2001-2002 | Chevrolet | Silverado 1500 HD | LT |
| 1988 | Chevrolet | Spectrum | Base |
| 1988 | Chevrolet | Spectrum | CL |
| 1999-2002 | Oldsmobile | Alero | GLS |
| 1999-2002 | Oldsmobile | Alero | GX |
| 1995-1999,2001-2002 | Oldsmobile | Aurora | Base |
| 1991-1994,1996-2004 | Oldsmobile | Bravada | Base |
| 1988-1992 | Oldsmobile | Custom Cruiser | Base |
| 2002 | Chevrolet | Monte Carlo | SS 35th Anniversary Edition |
| 2002 | Chevrolet | Monte Carlo | SS Dale Earnhardt Signature Edition |
| 1995-1999 | Chevrolet | Monte Carlo | Z34 |
| 1988 | Chevrolet | Nova | Base |
| 1988 | Chevrolet | Nova | CL |
| 1988 | Chevrolet | Nova | Twin Cam |
| 2002 | GMC | Sierra 1500 | Denali |
| 2002 | GMC | Sierra 1500 | HT |
| 1999-2002 | GMC | Sierra 1500 | SL |
| 1999-2002 | GMC | Sierra 1500 | SLE |
| 1999-2002 | GMC | Sierra 1500 | SLT |
| 2002 | GMC | Sierra 1500 | WT |
| 2001-2002 | GMC | Sierra 1500 HD | SLE |
| 2001-2002 | GMC | Sierra 1500 HD | SLT |
The Eaton Detroit Truetrac Diff 28 Spline is engineered for high-performance rear differentials, featuring a robust 1.20 inch axle shaft diameter. Designed to fit rear 7.5 inch and 7.625 inch setups, this differential is optimized for ratios of 3.23 and up, ensuring enhanced traction and handling for demanding driving conditions.
Built to deliver reliable and consistent performance, the Eaton Truetrac differential utilizes advanced technology to improve torque distribution, minimizing wheel slip and maximizing power transfer. Its durable construction guarantees longevity and dependability in both street and race environments.
Whether you are upgrading your V8-powered hot rod, kit car, or motorsport vehicle, this differential stands out as a crucial component to boost your drivetrain's efficiency. Its compatibility and design make installation straightforward, contributing to an overall improved driving experience.
Trust Eaton, a respected name in the drivetrain industry, to provide parts that meet the exacting standards of automotive enthusiasts. This Truetrac model is precisely crafted to support your vehicle's performance needs without compromise.
Built to deliver reliable and consistent performance, the Eaton Truetrac differential utilizes advanced technology to improve torque distribution, minimizing wheel slip and maximizing power transfer. Its durable construction guarantees longevity and dependability in both street and race environments.
Whether you are upgrading your V8-powered hot rod, kit car, or motorsport vehicle, this differential stands out as a crucial component to boost your drivetrain's efficiency. Its compatibility and design make installation straightforward, contributing to an overall improved driving experience.
Trust Eaton, a respected name in the drivetrain industry, to provide parts that meet the exacting standards of automotive enthusiasts. This Truetrac model is precisely crafted to support your vehicle's performance needs without compromise.
Customer reviews
Based on 160 reviews
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We want to deliver parts fast, efficiently, and with ease. Our mission is to continue to provide just that. To provide large inventory and efficient logistics while maintaining great service. As well as a community with like-minded auto enthusiasts that share the same passion as we do.

















