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OE Quality
60-Day Returns
MahlePart #: GS33757
Mahle GS33757 Fuel Injector Seal Kit
⚙️ 16 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$124.55Free 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.
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✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
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Mahle GS33757 Fuel Injector Seal Kit
This part fits 16 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2004 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2004 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2004 | GMC | Sierra 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2003 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2003 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2003 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2003 | GMC | Sierra 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2002 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2002 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2002 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2002 | GMC | Sierra 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2001 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2001 | Chevrolet | Silverado 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2001 | GMC | Sierra 2500 HD | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
| 2001 | GMC | Sierra 3500 | 6.6L | V8 | N/A | Contains all gaskets and seals required for the installation of fuel injectors |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.