Description
1R-0750 Fuel Filter + Billet Aluminum Refit Head Kit for Duramax 6.6L Diesel
Upgrade your 2005-2016 GM Duramax 6.6L diesel fuel filtration with this complete kit that replaces the problematic OEM plastic filter housing with a CNC-machined billet aluminum refit head and high-capacity 1R-0750 spin-on filter. The factory filter head is known for air intrusion, cracking, and expensive filter replacements. This billet aluminum solution allows you to use the widely available and cost-effective 1R-0750 spin-on filter — providing superior filtration at a fraction of the OEM filter cost.
Key Features
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Complete Filter Head Replacement Kit: Includes 12642623 billet aluminum filter head with hand primer pump, 1R-0750 refit adapter head (CNC-machined, black anodized), and 1R-0750 spin-on filter.
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Billet Aluminum Construction: Both filter head and refit adapter are precision-machined from solid 6061 aluminum — no more cracked plastic housings.
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Improved Design: Upgraded bolt eliminates removing the check ball during assembly. Aluminum bleeder screw replaces the fragile OEM plastic bleeder.
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High-Flow Filtration: 1R-0750 filter provides 5-micron filtration with industry-leading flow rates for maximum injection pump protection.
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Massive Cost Savings: 1R-0750 filters cost $15-25 vs. $40-60 for OEM Duramax filters — pays for itself in 2-3 changes.
Compatibility
| Year |
Make |
Model |
Engine |
| 2005-2007 |
Chevrolet/GMC |
Silverado/Sierra 2500HD 3500HD |
6.6L Duramax LLY/LBZ |
| 2007.5-2010 |
Chevrolet/GMC |
Silverado/Sierra 2500HD 3500HD |
6.6L Duramax LMM |
| 2011-2016 |
Chevrolet/GMC |
Silverado/Sierra 2500HD 3500HD |
6.6L Duramax LML |
Specifications
| Component |
Detail |
| 12642623 Filter Head |
Billet Aluminum, Electrophoresis Coated, Hand Primer Pump, Aluminum Bleeder |
| 1R-0750 Refit Head |
CNC-Machined 6061 Aluminum, Black Anodized |
| 1R-0750 Filter |
5 Micron, 1-14 UNS-2B Thread, Spin-On Style |
| Cross-Ref Filters |
BF7633, P551313, P551740, FF5320, TP3018, 19305685, 12664429 |
Why Choose iFJF?
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Fix the OEM Weak Point: Factory Duramax filter heads crack, leak air, and cost a fortune. Our billet solution fixes all three.
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Proven 1R-0750 Filter: The Caterpillar 1R-0750 is legendary for filtration quality — now available for your Duramax.
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Precision Fit: Every unit CNC-machined to exact tolerances and pressure-tested before shipping.
Frequently Asked Questions
Q: Will this fit my 2013 Duramax LML?
A: Yes. This kit fits all 2005-2016 Duramax including LLY, LBZ, LMM, and LML engine codes.
Q: Do I need to remove the check ball during installation?
A: No — our upgraded bolt design eliminates this step entirely.
Q: What replacement filters can I use afterwards?
A: Any filter crossing with 1R-0750: BF7633 (Baldwin), P551313 (Donaldson), FF5320 (Fleetguard), and others.
Q: How often should I replace the filter?
A: Every 10,000-15,000 miles or every other oil change. More frequently with biodiesel or dusty conditions.
Q: Does the kit include installation instructions?
A: Professional installation is recommended. The kit includes all necessary components for OEM-to-spin-on conversion.
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