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

SKU: 591-2389 MPN: 591-2389

Genuine Diesel Exhaust Fluid Pump by Caterpillar.New condition. Part number: 591‑2389. Supporting heavy‑duty DEF pressure stability. Compatible with: Generator set, Powertrain, Excavator, Generator engine and Articulated Trucks.

$1,149.00
No Core Charge
2 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: 591-2389

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Product Description

Product Name Diesel Exhaust Fluid Pump Product Name Diesel Exhaust Fluid Pump
Condition New Condition New
Brand Caterpillar Brand Caterpillar
Part Number 591-2389 Part Number 591-2389
Cross Reference 5912389 Cross Reference 5912389
Vehicle Comaptible
Cat Excavator 352, 355 Cat Excavator 352, 355
Articulated Truck 730, 730 EJECTOR, 725, 735 Articulated Truck 730, 730 EJECTOR, 725, 735
Engine Compatible
Engine C13B Engine C13B
Industrial Engine C9.3B Industrial Engine C9.3B
Powertrain AMP 12-positionTR43E44-C13BL, TR43M44-C13B Powertrain AMP 12-positionTR43E44-C13BL, TR43M44-C13B
Generator Set DE630, DE500 Generator Set DE630, DE500
Engine - Generator Set 3508B Engine - Generator Set 3508B
Petroleum Package CX31-P600 Petroleum Package CX31-P600
OEM Solutions 3412C OEM Solutions 3412C
Specifications
Voltage 24V Voltage 24V

Useful Information

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.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 591-2389