Fuel Filter Head with Hand Pump & 1R-0750 Adapter – OEM-Compatible | Fits GM Duramax 6.6L V8 Diesel (LLY/LBZ/LMM/LML) | Chevy Silverado & GMC Sierra 2500HD/3500HD (2005–2016) | Replaces 12642623

Fuel Filter Head with Pump & 1R-0750 Adapter – OEM-Compatible

This upgraded fuel filter head assembly replaces the OEM 12642623 unit and includes a high-flow 1R-0750 spin-on adapter. Designed for GM Duramax 6.6L V8 diesel engines, it improves filtration, durability, and ease of maintenance.

Key Benefits

• Billet aluminum base with electrophoresis coating – corrosion-resistant
• Iron hand pump and tubes – oxidation-treated for durability
• Aluminum bleeder screw replaces fragile OEM plastic screw
• Black anodized CNC adapter – supports 1R-0750 spin-on filters
• Improved bolt design – no need to remove check ball during installation

Fitment Compatibility

• Chevy Silverado 2500HD / 3500HD (2005–2016)
• GMC Sierra 2500HD / 3500HD (2005–2016)
• Engine Platforms: Duramax 6.6L V8 – LLY / LBZ / LMM / LML

Replaces OEM Part Numbers

• 12642623
• 1R-0750 (Adapter)

What's Included

• 1 x Fuel Filter Head with Hand Pump
• 1 x 1R-0750 Adapter Head (CNC Machined)
• Mounting bolt and O-rings (included)

Notes

• Compatible with Caterpillar 1R-0750 spin-on filters (sold separately)
• Professional installation recommended
• Estimated install time: 30–45 minutes

Filtration System Upgrade

Ideal for replacing OEM filter heads prone to cracking or leaking. This kit offers improved flow, better filtration, and long-term reliability for high-demand diesel applications.