For Caterpillar 3306 Engine Water Pump: 2W-8003 172-7772

Component Overview: 2W-8003 Coolant Pump

The 2W-8003 water pump assembly is the primary cooling circulation unit designed for Caterpillar's 14.6L heavy-duty diesel engine platforms, specifically the 3406, 3406B, and 3406C series. Engineered for high-displacement thermal management, this component ensures strict adherence to original factory coolant flow rates and pressure specifications.

Technical Specifications

• Component Assembly: Cast iron housing with precision-balanced impeller.

• Seal Type: Heavy-duty unitized mechanical seal for extreme thermal and pressure cycling.

• Bearing Design: High-load capacity bearings to counteract heavy serpentine belt tension on large displacement engines.

• Fitment Type: Direct flange-to-block mount (no modifications required).

Comprehensive Cross-Reference Index

This unit is a direct functional replacement for the following Caterpillar part numbers:

• Standard Replacement: 2W-8003, 7C-4957, 137-1338, 137-1339, 4N-7498, 352-0205

• Remanufactured (Reman) Reference: 0R-8217, 0R-4120, 0R-8330

Caterpillar Machine Fitment Roster

Applicable to machinery powered by the Cat 3406 / 3406B / 3406C engine block:

• Wheel Loaders: 980C, 980F

• Track-Type Tractors (Dozers): D8L, D8N

• Motor Graders: 16G

• Wheel Tractor-Scrapers: 621B, 621E, 623B, 627B, 627E

• Articulated Dump Trucks: D400, D400D

• Soil Compactors: 825C, 826C

• Pipelayers: 589

• Industrial & Marine: 3406 Industrial Engine, 3406 Marine Generator Sets

Procurement Status

• Condition: 100% Brand New Aftermarket (Non-Remanufactured)

• Packaging: Securely crated for global transit

• Availability: In Stock / Ready for Dispatch