Skip to product information
1 of 3

CAT 9H2256 (9H-2256) Fuel Priming Pump | Fits 3304 3306 950 966C 140

CAT 9H2256 (9H-2256) Fuel Priming Pump | Fits 3304 3306 950 966C 140

In Stock & Ready for Global Express Dispatch

Request a Quick Quote

✓ Premium CAT Quality Spec  |  ✓ 100% Direct Fit  |  ✓ Fast Global Shipping

Premium engine fuel priming pump engineered as a direct OEM-compatible replacement for Caterpillar 9H2256 (9H-2256) series. Built to facilitate quick manual priming, purge trapped air from the fuel system after filter changes or engine servicing, and ensure reliable starting across a wide range of Caterpillar diesel engines and heavy machinery.

Product Highlights

  • Part Number: CAT 9H2256 / 9H-2256
  • Direct Fit OEM Replacement: Mounting threads, plunger actuation, and sealing surfaces precisely align with original Caterpillar factory specifications.
  • Durable Construction: Built with high-grade metal housing, corrosion-resistant internal components, and heavy-duty seals to withstand harsh diesel environments.
  • Effortless Air Bleeding: Quickly primes fuel lines and removes air locks to prevent hard starting, extended cranking, and starter motor wear.

Technical Specifications

Parameter Specification
Part Number 9H2256 / 9H-2256
Equipment Brand Caterpillar (CAT)
Engine Compatibility CAT 3304, 3306, 3160, 1673, 1673B, 1673C, 1674, 1676, D320A, D330A
Product Type Manual Fuel Priming Pump / Hand Primer Pump
Application Engine Fuel System Air Bleeding & Priming
Warranty 12 Months Warranty

Compatible Models & Equipment

This premium fuel priming pump is precision-engineered to fit the following Caterpillar engines and machinery:

  • Engine Models: 3304, 3306, 3160, 1673, 1673B, 1673C, 1674, 1676, D320A, D330A
  • Wheel Loaders & Traxcavators: 920, 930, 941, 950, 951B, 955H, 955K, 955L, 966C, 977H, 977K, 977L, 980B
  • Motor Graders: 120, 12E, 12F, 140, 14E
  • Wheel Tractors & Scrapers: 627, 637, 814, 815, 816
  • Pipelayers & Track Machinery: 561B, 561C

Key Applications

  • Fuel System Priming: Manually pumps diesel fuel into the injection pump and lines following routine filter replacement or maintenance.
  • Air Pocket Purging: Eliminates trapped air pockets in the fuel circuit to resolve engine stalling, rough idling, or failure to start.
  • Maintenance & Service: Crucial component for field servicing, reducing starter motor drain and downtime on jobsites.

Why Choose Our CAT Replacement Parts?

  • Strict Quality Standards: Manufactured under ISO 9001 guidelines and 100% factory-inspected for pressure seal integrity.
  • Cost-Effective Aftermarket Option: Factory-direct pricing delivering identical functionality and service life as original OEM units.
  • Global Express Shipping: Fully stocked and ready to dispatch worldwide to minimize equipment downtime.
  • Comprehensive Support: Covered by a 12-month warranty with lifetime technical guidance from engine parts specialists.

Frequently Asked Questions (FAQ)

Q: Is this priming pump a direct replacement for CAT part number 9H2256 (9H-2256)?

A: Yes, this pump is a 100% direct-fit replacement engineered to match the exact threads, dimensions, and flow capability of original part 9H2256 / 9H-2256.

Q: What engines and machines does this fuel priming pump fit?

A: It fits popular Caterpillar engine platforms like 3304, 3306, and 3160, as well as equipment models such as 950, 966C, 980B, 120, 140, 627, and 815.

Q: What is covered under the 12-month warranty?

A: Our 12-month warranty covers all structural material defects, plunger seal leaks, and operational failures under normal operating conditions.

Q: How fast can this pump be shipped?

A: In-stock orders are dispatched within 3–5 business days, with express air freight options available globally.


Explore our full range of heavy-duty fuel components:
View All Fuel Pumps »

Need a Quote for CAT 9H2256 (9H-2256)?

Contact us today for factory-direct pricing, stock availability, and global logistics options.

Request a Quote

📧 Request a Quote View full details