12664429 Fuel Filter Housing for Duramax 6.6L Chevy Silverado GMC 2011 2016

Product Overview

This fuel filter housing restores proper fuel filtration performance on 2011–2016 Chevrolet Silverado and GMC Sierra HD models powered by the Duramax 6.6L diesel. Precision-engineered to factory tolerances, it replaces a cracked, leaking, or sensor-damaged housing with a plug-and-play unit that accepts the standard cartridge filter. The housing includes the water-in-fuel sensor port and all necessary mounting interfaces for a straightforward swap.

Key Features & Performance

• Direct replacement for OEM 12664429 housing—identical fit and sealing surfaces
• Built-in water-in-fuel sensor port accepts original sensor without modification
• Robust metal alloy construction resists vibration, heat, and diesel fuel degradation
• Includes pre-installed mounting gasket for a leak-free seal
• Engineered for the LML Duramax 6.6L V8 diesel fuel flow and pressure requirements
• No filter included—designed to accept common cartridge-style fuel filters

Fitment & Compatibility

• 2011–2016 Chevrolet Silverado 2500HD with 6.6L Duramax Diesel
• 2011–2016 Chevrolet Silverado 3500HD with 6.6L Duramax Diesel
• 2011–2016 GMC Sierra 2500HD with 6.6L Duramax Diesel
• 2011–2016 GMC Sierra 3500HD with 6.6L Duramax Diesel

Common Uses

• Replacing a weeping or cracked fuel filter housing that causes air intrusion or fuel leaks
• Fixing a stuck or stripped water-in-fuel sensor thread without replacing the entire filter assembly
• Routine fuel system service on high-mileage Duramax-powered trucks
• Restoring proper fuel filtration after a housing seal failure

Technical Specifications

• Part Number(s): 12664429
• Engine Compatibility: 6.6L Duramax LML V8 Turbo Diesel (2011–2016)
• Material: High-strength metal alloy
• Filter Included: No
• Water-in-Fuel Sensor Port: Yes, accepts OE sensor
• Mounting: Bolt-on replacement with included gasket

Frequently Asked Questions

Q: Does this housing come with a new fuel filter? A: No, the filter is sold separately; this is the metal housing only and uses the standard Duramax cartridge-style filter.

Q: Will this fix a slow fuel leak at the filter housing seam? A: Yes, it replaces the original housing with a new sealed unit that matches OEM dimensions and eliminates housing leaks when torqued to specification.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.