4089663RX | Genuine Cummins® Fuel Pump Distributor Kit

Description and Purpose:

The Fuel Pump Distributor Kit ensures precise fuel metering and delivery within diesel engine injection systems. Part Number: 4089663RX. Brand: Cummins. Condition: New. This Genuine assembly is specifically designed for use with 8.3L and 8.9L Cummins engines, where it helps evenly distribute high-pressure diesel fuel to each injector. It supports core fuel delivery functions that directly affect combustion stability, system responsiveness, and emissions control across medium-duty applications. Cross reference: 4089663

Why Replacement is Important:

Over time, fuel distribution components wear down or lose calibration, leading to uneven injection, hard starts, or engine misfires. Replacing the kit restores consistent fuel flow, supporting dependable engine behavior.

Impact on Vehicle Performance:

A stable fuel distribution system improves power delivery, reduces fuel consumption, and ensures smoother engine operation, especially under variable load and speed conditions.

Manufacturer Information:

Cummins® is a global leader in diesel engine manufacturing, delivering powerful, fuel-efficient solutions for commercial and industrial use.

Tags & Category: Fuel Pump Components, Fuel Distributor Kit, Diesel Injection System Parts, Fuel Delivery Assembly, Fuel Injection Support, Engine Fuel System Kit, 8.3L Engine Compatible, 8.9L Engine Compatible, Medium Duty Engine Parts, High Pressure Fuel Components, Diesel Engine Fuel Pump, Internal Engine Fuel Distribution, Fuel Control System Parts, Diesel Fuel System Repair, Injection System Rebuild Kit

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The -warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.