2001-2016 Duramax Ordnance 650 CP3 w/ Gear Pump Delete Plate (LBZ-CP3-ORD650-GPD)

Fits

Note: For 2011–2016 models, you will require a CP3 Conversion Kit.

The Duramax Ordnance 650 CP3 (GPD) is a competition-grade pump designed for high-RPM reliability and extreme performance. Starting as a brand-new Bosch CP3, each unit is heavily modified and finished in a durable Cerakote to prevent corrosion. Featuring a massive 1,850 mm3/rev displacement and 650 L/hr flow rate, it supports over 1,200+ HP. This Gear Pump Delete version is built for multi-pump or high-volume electric lift pump setups, removing the mechanical rear pump to reduce parasitic drag and simplify the fuel system.

*IMPORTANT* Please read the "Additional Information" section.

Part Number: LBZ-CP3-ORD650-GPD

• Gear Pump Delete reduces parasitic drag
• Ideal for multi-pump or high-volume electric lift pump setups
• Displacement 1,850 mm3 per revolution
• Flow Rate 650 L/hr (Competition Grade)
• New LBZ-Based uses the robust, "normally open" MPROP regulator for maximum performance potential.
• High-RPM Capability
• 650 L/h flow rate at 6,000 RPM
• Billet flange with integrated gForce Block
• Cerakote® finish to prevent corrosion
• New Bosch CP3
• Modified IMV for high-speed efficiency

• Fuel Compatibility Diesel
• Weight (Gear Pump Delete) 7.4 kg (16.3 lbs)
• Protrusion from Front Cover (Gear Pump Delete) 107 mm (4.21 in)
• Displacement 1,850 mm3/rev
• Flow Rate 650 L/h (2.86 GPM)
• Max Speed 8,000 RPM (tested) 7,000 RPM (recommended)
• Fuel Temperature -40°C (-40°F) to 70°C (158°F)
• High-Pressure Outlet Port M14x1.5(M)
• Feed and Return Ports M12x1.5(F)
• Recommended Supply Pressure 9.65 bar (140 psi)
• Required Supply Flow (6,000 RPM) 820 L/h (3.61 GPM)
• Required Supply Flow (850 RPM) 120 L/h (0.53 GPM)

High-Pressure Supply Requirement: Unlike a standard CP3 pump, the Ordnance 650 series is internally clearanced to operate with an inlet supply pressure of 140–160 PSI.

• Your electric lift pump system (FASS, AirDog, etc.) must be capable of providing and maintaining this high-side pressure.
• Failure to provide adequate supply pressure will result in pump cavitation and a significant reduction in output.
• 2001–2005 (LB7/LLY): This pump uses a "Normally Open" LBZ-style regulator. Custom tuning is mandatory to scale the Fuel Pressure Regulator (FPR) current. Without proper scaling, the engine will experience rail pressure spikes and potential damage.
• Fuel Volume Scaling: Due to the massive 1,850 mm3 displacement, all model years require tuning adjustments to the "Flow vs. Current" tables to ensure a smooth idle and accurate rail pressure tracking.
• 2011–2016 (LML): Requires a CP3 Conversion Kit.