591-2389 | Genuine CAT® Diesel Exhaust Fluid Pump 24V

Description and Purpose:

Genuine Caterpillar Diesel Exhaust Fluid Pump in New condition. Part number: 591-2389. This heavy‑duty truck component meters DEF precisely for Excavator 352/355, Articulated Truck 730/735/725/730 and generator packages DE630, DE500, 3508B. Securing emissions control on C13B powertrains. DEF Pump guarantees accurate DEF dosing in harsh, heavy‑duty cycles. Cross reference: 5912389.

Why Replacement is Important:

A weak pump starves the SCR, raising NOx and forcing costly derate events—replacing keeps fleets and heavy equipment compliant.

Impact on Vehicle Performance:

Steady DEF pressure sustains full horsepower and fuel economy, even during long haul or quarry duty.

Manufacturer Information:

Caterpillar® is a global leader in heavy equipment and engines, known for unmatched durability and performance.

Tags & Category: Caterpillar DEF, Diesel Exhaust Fluid, CAT Pump, DEF Pump, Genuine Caterpillar DEF, Caterpillar Diesel Exhaust Fluid Pump, DEF Pump, Caterpillar DEF Pump, CAT DEF Pump, Caterpillar Pump.

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.