Description
Product Overview
The Duramax Fuel Filter Primer Seal Rebuild Kit — 6-Piece | iFJF from iFJF Direct is engineered to meet or exceed OEM specifications for GMC vehicles (2001-2013) with LMM. This fuel filter seal kit delivers reliable performance at factory-direct pricing.
Key Features
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Premium Quality: Manufactured to strict quality control standards with durable materials for long service life
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Direct Fit: Designed as a direct replacement — no modifications required for installation on compatible vehicles
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Factory Direct Value: Eliminate the middleman markup — get OEM-quality parts at aftermarket prices
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Fast US Shipping: Ships from our US warehouse within 1 business day of order
Compatibility
This product is designed to fit GMC vehicles (2001-2013) equipped with the LMM engine. Please verify compatibility with your specific vehicle using our fitment guide or contact our support team before ordering.
Why Choose iFJF Direct?
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Quality Assurance: Every product undergoes multi-point inspection before shipping
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US-Based Support: Our customer service team is available to answer your fitment and installation questions
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Hassle-Free Returns: 30-day return policy on unused parts in original packaging
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Expert Community: Join thousands of DIY mechanics and professional technicians who trust iFJF
Frequently Asked Questions
Q: What's included in this 6-piece kit?
A: The kit includes 4× Viton-75 O-Rings and 2× Buna-N (nitrile) plunger U-cups — the exact seals needed to rebuild the primer pump on your 2001-2013 Duramax fuel filter housing.
Q: How is this different from the complete kit with the bleeder screw?
A: This is the seals-only version — perfect if your bleeder screw is still in good condition or if you've already upgraded to a billet bleeder screw. The complete kit adds a billet aluminum bleeder screw for full assembly refresh.
Q: Will these seals stop my Duramax from losing fuel prime?
A: Yes. Air intrusion through degraded primer pump seals is the most common cause of lost prime in Duramax engines. Replacing these seals restores the air-tight seal needed to maintain fuel system prime.
Q: How often should these seals be replaced?
A: OEM seals typically last 100,000-150,000 miles before degradation becomes noticeable. If you're experiencing hard starts after the truck sits or see fuel seeping from the primer pump, it's time for a rebuild.
Q: Are Viton seals better than the factory rubber?
A: Yes — Viton (FKM) provides superior chemical resistance to modern diesel fuel and biodiesel blends. The original factory Buna-N seals are adequate but degrade faster when exposed to ULSD and biodiesel additives.
