Description
Fuel Filter Head Assembly for 2005-2013 Duramax 6.6L
This complete fuel filter head assembly replaces the failure-prone factory unit on 2005-2013 Duramax trucks. The aluminum construction eliminates the cracking issues of the OEM plastic housing, and the integrated hand priming pump makes fuel system bleeding quick and tool-free.
Key Features
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Aluminum Construction — Replaces plastic OEM housing that cracks over time
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Built-in Hand Primer — Bleed the fuel system without tools after filter changes
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Includes Bleeder Screw — Integrated air bleeder for complete system priming
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Heating Element Ready — Compatible with factory fuel heater connection
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Direct Fit — Replaces GM 12642623 for 2005-2013 Duramax LLY/LBZ/LMM
Compatibility
| Year |
Engine |
Models |
| 2005-2013 |
6.6L Duramax LLY/LBZ/LMM |
Silverado 2500HD/3500HD, Sierra 2500HD/3500HD |
FAQ
Q: Why do the stock housings fail?
A: The OEM plastic filter head becomes brittle from heat cycling and can crack at the threads or bleeder screw boss.
Q: Does this fit the LML (2011-2016)?
A: No. The LML uses a different filter housing design. This fits LLY/LBZ/LMM (2005-2013) only.
Q: Is the hand primer difficult to use?
A: No — simply pump it 10-15 times after a filter change to prime the system. Much easier than cycling the key.
Q: Does it come with the mounting gasket?
A: Yes, the complete assembly includes the housing, primer pump, bleeder screw, and mounting gasket.
