SKU: B32478 | UPC: 027067875235
MAHLE Original Turbocharger to Throttle Body Gasket 2001-2004 Chevrolet Silverado 2500 HD GMC Sierra 2500/3500 HD
MAHLE B32478 turbocharger to throttle body gasket delivers reliable sealing for 6.6L Duramax diesel engines in 2001-2004 Chevrolet Silverado 2500 HD 3500 and GMC Sierra HD trucks. This direct OE replacement prevents boost leaks maintains air flow and supports engine efficiency during high-performance operation. Technicians rely on MAHLE for consistent results in demanding diesel applications.
Key Features
- OE-Quality Construction: Matches factory specifications for exact fit and function on Duramax LB7 engines
- High-Temperature Resistance: Handles extreme heat and pressure from turbo boost without degradation
- Multi-Layer Design: Provides durable barrier against exhaust gases and oils for long service life
- Precision Engineered: Ensures proper alignment and compression on turbo outlet to throttle inlet
- Global OEM Trust: Proven sealing performance used by manufacturers and repair shops worldwide
Product Notes
- Direct replacement part number B32478 MPN for 6.6L diesel models no core charge required
- Inspect turbo and throttle body surfaces for flatness before installation
- Packages in protective envelope dimensions 7.4 x 5.7 x 0.7 inches product weight 0.8 ounces
Installation Notes
- Professional installation recommended.
- Degrease and clean all mating surfaces to remove old gasket residue and oils
- Use new O-rings if included torque bolts to 10-12 ft-lbs in cross pattern
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2004 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2004 | Chevrolet | Silverado 2500 HD | LT |
| 2004 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2004 | Chevrolet | Silverado 3500 | Base |
| 2001-2004 | Chevrolet | Silverado 3500 | LS |
| 2001-2004 | Chevrolet | Silverado 3500 | LT |
| 2004 | Chevrolet | Silverado 3500 | WT |
| 2002-2004 | GMC | Sierra 2500 HD | Base |
| 2001-2002 | GMC | Sierra 2500 HD | SL |
| 2001-2004 | GMC | Sierra 2500 HD | SLE |
| 2001-2004 | GMC | Sierra 2500 HD | SLT |
| 2003-2004 | GMC | Sierra 2500 HD | WT |
| 2002-2004 | GMC | Sierra 3500 | Base |
| 2001-2002 | GMC | Sierra 3500 | SL |
| 2001-2004 | GMC | Sierra 3500 | SLE |
| 2001-2004 | GMC | Sierra 3500 | SLT |
| 2004 | GMC | Sierra 3500 | WT |
Why Choose MAHLE?
- World class sealing products trusted by OEMs and technicians around the globe
- Engineered for diesel performance in heavy duty trucks
- Consistent quality from precision manufacturing processes
Frequently Asked Questions
-
Q: Will B32478 fit my 2003 Silverado 2500HD 6.6L Duramax?
A: Yes fits all listed 2001-2004 Silverado 2500 HD LS LT Base models with LB7 6.6L diesel engine -
Q: What material is the MAHLE B32478 gasket made from?
A: Multi-layer steel with graphite coating designed for high boost and exhaust temperatures -
Q: What is the warranty on this gasket?
A: Backed by MAHLE limited warranty covers defects in materials and workmanship contact retailer for details
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective envelope 7.4 x 5.7 x 0.7 inches
- Weight: 0.8 ounces
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