Upgrade or service your 2001–2016 GM 6.6L Duramax with the Racor PFF50216 ParFit Fuel Filter. Racor (Parker Hannifin) is the OEM supplier to General Motors, and this spin-on filter meets or exceeds factory specifications while delivering superior real-world protection — especially in biodiesel blends and variable-quality diesel fuels.

Unlike cheap “will-fit” paper-pleat filters, the PFF50216 uses Racor’s advanced Aquabloc® depth coalescing media in a true dual-stage design: a primary multi-layered coalescer that captures dirt and extracts finely emulsified water, followed by a secondary polishing stage that delivers ultra-clean fuel to your high-pressure common-rail system.

Key Features & Benefits

• Superior Contaminant & Water Protection — 4-micron filtration with 99% water removal efficiency. Critical protection for injectors, high-pressure fuel pumps, and rails.
• Up to 2× Longer Service Life — Depth coalescing media lasts significantly longer than standard pleated filters, reducing maintenance costs and downtime.
• Optimized for All Diesel Fuels — Performs better than conventional filters in ultra-low sulfur diesel, biodiesel blends, and lower-quality fuels.
• Direct OE Replacement — No modifications required. Replaces GM 12633243 / 12664429 and ACDelco TP3018 / TP3012.
• Robust, Leak-Resistant Design — Unique can construction resists impact and maintains seal integrity far better than generic copies.
• Easy Spin-On Service — Quick filter changes with included O-rings.

Technical Specifications

• Application: 2001–2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)
• Micron Rating: 4 Micron
• Water Removal Efficiency: 99%
• Maximum Flow Rate: 50 GPH (189 LPH)
• Maximum Working Pressure: 30 PSI (2.07 bar)
• Center Thread: 3/8"-8 Buttress
• Operating Temperature: -50°F to +225°F (-46°C to +107°C)
• Dimensions (approx.): Height 6.4 in (16.3 cm) × Diameter 4.2 in (10.7 cm)
• Includes: Filter element + large & small O-rings