Description
Fuel Filter Head 2005-2013 Duramax LLY/LBZ/LMM — Billet Bleeder Screw
Upgraded Fuel Filter Head Assembly
Upgrade your fuel filtration system with this premium filter head assembly for 6.6L Duramax LLY, 6.6L Duramax LBZ. Featuring a billet aluminum construction with integrated bleeder screw, this filter head eliminates the common failure points of OEM plastic housings — no more cracking, stripping, or leaking. Includes integrated heater element connection and hand-primer pump for easy fuel system priming after filter changes.
Key Features
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Billet Aluminum Construction — Eliminates cracking, stripping, and leaking of OEM plastic housings
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10 Micron Filtration — Multi-layer cellulose/synthetic media captures particles as small as 10 microns
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Water Separation — Hydrophobic barrier strips emulsified water from diesel fuel, preventing injector corrosion
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OEM-Quality Construction — Manufactured to ISO/TS 16949 quality standards with 100% end-of-line testing
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Direct Fit — Precision-engineered to match OEM dimensions and mounting points — no modifications required
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Corrosion Resistant — Coated/plated components withstand diesel fuel, road salt, and moisture exposure
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Validated for Chevrolet, GMC — Confirmed fitment across all listed applications
Compatibility
| Make |
Engine |
Year Range |
Model |
| Chevrolet |
6.6L Duramax LLY |
2005 |
Silverado 2500HD/3500 |
| GMC |
6.6L Duramax LBZ |
2006-2007 |
Sierra 2500HD/3500 |
| Chevrolet/GMC |
6.6L Duramax LMM |
2007.5-2013 |
Silverado/Sierra 2500HD/3500 |
Always verify fitment using the cross-reference part numbers below or contact our support team.
Cross-Reference Part Numbers
| Brand |
Part Number |
| GM |
12642623 |
| AC Delco |
TP3018 |
| Baldwin |
FB1311 |
| Fleetguard |
FS19856 |
Specifications
| Specification |
Value |
| Part Number |
Fuel |
| Brand |
iFJF |
| Filtration Rating |
10 Micron (Nominal) |
| Media Type |
Cellulose/Synthetic Blend |
| Product Type |
Fuel Pump |
| Application |
6.6L Duramax LLY, 6.6L Duramax LBZ |
| Vehicle Make |
Chevrolet, GMC |
| Material |
Aluminum/Steel |
| Country of Origin |
China (ISO Certified) |
| Warranty |
1 Year / Unlimited Mileage |
Installation Guide
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Relieve fuel system pressure — Remove fuel cap and depressurize per vehicle service manual
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Remove old filter — Unscrew filter housing cap, remove old element, drain housing into approved container
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Clean housing — Wipe housing interior with clean lint-free cloth, inspect for debris or water
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Install new O-rings — Lubricate new O-rings with clean diesel fuel, seat properly in grooves
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Insert new element — Place new filter element into housing, ensuring proper orientation
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Reassemble and torque — Reinstall cap to manufacturer torque spec (typically 25-35 Nm)
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Prime fuel system — Cycle key to ON (not START) 3-5 times for 30 seconds each, or use manual primer pump
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Check for leaks — Start engine, inspect housing and connections for fuel seepage
Maintenance Schedule
For optimal fuel system protection, replace your fuel filter every 15,000-25,000 miles (or every other oil change) under normal operating conditions. For severe service (heavy towing, dusty environments, high-idle operation), reduce interval to 10,000-15,000 miles. Always replace both primary and secondary filters as a set on two-stage filtration systems.
Frequently Asked Questions
Q: What are the benefits of upgrading to this filter head?
Upgrading to this billet aluminum filter head eliminates the common failure points of OEM plastic housings: cracking, thread stripping, and air leaks. It also provides easier bleeding with the integrated bleeder screw.
Q: Will this work with my existing 6.6L Duramax LLY filter element?
Yes, this filter head is designed to accept standard 6.6L Duramax LLY filter elements. It maintains OEM thread specifications and seal dimensions.
Q: Does this include installation hardware?
Yes, this assembly includes the filter head, bleeder screw, heater element connector, and all necessary O-rings and mounting hardware for a complete installation.
Q: Is professional installation recommended?
While experienced DIY mechanics can install this component, we recommend professional installation due to the critical nature of the fuel system. Improper installation can lead to fuel leaks and engine damage.
Q: How do I prime the fuel system after installation?
Use the integrated hand-primer pump (if equipped) to fill the filter housing and bleed air from the system. Alternatively, cycle the ignition key to the ON position (not START) for 30 seconds, 3-5 times, to allow the electric lift pump to prime the system.
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