Description
1R-0750 Fuel Filter Refit Head Bolt — Stainless Steel — 2001-2016 Duramax 6.6L
The 1R-0750 Fuel Filter Refit Head Bolt is a precision-engineered stainless steel replacement for the mounting bolt that secures the billet aluminum fuel filter head assembly to the engine bracket on 2001-2016 Duramax 6.6L diesel engines. The factory bolt is prone to corrosion and seizing — especially in salt-belt states — making future filter changes a nightmare. This stainless steel upgrade eliminates that problem permanently.
Key Features
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304 Stainless Steel: Complete corrosion resistance — no rust, no seizing, no snapped bolts during filter service. Unlike the factory carbon steel bolt that rusts solid after a few winters.
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Precision-Threaded: Exact thread pitch and diameter match the 1R-0750 filter head mounting boss — threads in smoothly without cross-threading.
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Hex Head Design: Standard socket size for easy removal with common tools — no special bits required.
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Direct Replacement: One-for-one swap with the original bolt. Remove the old rusty bolt, thread this one in, torque to spec — done in 5 minutes.
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Anti-Seize Pre-Applied: Factory-coated with nickel-based anti-seize compound for immediate installation and future serviceability.
Compatibility
| Year |
Make |
Model |
Engine |
| 2001-2004 |
Chevrolet/GMC |
Silverado/Sierra 2500HD/3500HD |
6.6L LB7 |
| 2004.5-2005 |
Chevrolet/GMC |
Silverado/Sierra 2500HD/3500HD |
6.6L LLY |
| 2006-2007 |
Chevrolet/GMC |
Silverado/Sierra 2500HD/3500HD |
6.6L LBZ |
| 2007.5-2010 |
Chevrolet/GMC |
Silverado/Sierra 2500HD/3500HD |
6.6L LMM |
| 2011-2016 |
Chevrolet/GMC |
Silverado/Sierra 2500HD/3500HD |
6.6L LML |
Frequently Asked Questions
Q: My factory bolt is completely seized — what should I do?
A: Apply penetrating oil (Kroil or PB Blaster) and let it soak for 30+ minutes. Use a 6-point socket (not 12-point) to avoid rounding. If still stuck, apply heat with a propane torch to the surrounding bracket (not the bolt itself). The thermal expansion will help break the rust bond. Once removed, install this stainless bolt and never deal with it again.
Q: Will this bolt fit my aftermarket billet filter head?
A: If your aftermarket filter head uses the factory 1R-0750 mounting boss threads, yes. This bolt matches the OEM thread specifications exactly. For aftermarket heads with different thread specs, please verify before ordering.
Q: Do I need to replace this bolt every time I change the filter?
A: No. This stainless steel bolt is a one-time upgrade. Unlike the factory bolt that corrodes over time, this bolt will outlast your truck. Just apply fresh anti-seize during filter changes for extra insurance.
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