Piston Pump - Caterpillar

Welcome to your one-stop source for Caterpillar (CAT) hydraulic pumps and engine components. We stock a comprehensive range of replacement parts for CAT heavy equipment — from the compact 320 series excavator to the massive 994 mining wheel loader, and everything in between. Whether you need a complete hydraulic piston pump for a CAT 336 excavator, a charge pump for a 950 wheel loader, or a water pump for a C15 industrial engine, HE PUMP has the OEM-compatible parts you need to keep your Caterpillar equipment running. Every product is manufactured to meet or exceed Caterpillar OEM specifications, and all items include 12-month warranty coverage with worldwide shipping from stock.

Caterpillar Equipment We Cover

Our inventory supports the complete CAT equipment lineup across all major model families:

  • Hydraulic Excavators: 320, 320D, 320F, 320GC, 323, 325, 330, 336, 340, 345, 349, 352, 374 series — main hydraulic pumps, travel motors, swing motors, pilot pumps, and control valves
  • Wheel Loaders: 938, 950, 966, 980, 988, 990, 992, 994 series — implement pumps, steering pumps, charge pumps, and auxiliary hydraulic components
  • Track-Type Tractors (Bulldozers): D4, D5, D6, D7, D8, D9, D10, D11 series — blade hydraulics, ripper pumps, and track drive motors
  • Motor Graders: 12M, 14M, 16M, 18M, 24M series — blade lift/tilt pumps, circle drive motors, and hydraulic control valves
  • Off-Highway Trucks: 730, 740, 775, 777, 785, 789, 793, 797 series — dump body pumps, steering pumps, and braking system hydraulics
  • Backhoe Loaders: 420, 430, 440, 450 series — loader/backhoe hydraulic pumps and control valves
  • Skid Steer Loaders: 226, 232, 236, 242, 246, 262 series — auxiliary hydraulic pumps and drive motors

Caterpillar Engines We Support

In addition to hydraulic components, we supply engine pumps for the complete CAT diesel engine family:

  • C-Series Electronic Engines: C7, C9, C11, C13, C15, C18, C27, C32, C175 — modern electronically controlled engines requiring reliable lubrication, cooling, and fuel delivery
  • Legacy Mechanical Engines: 3304, 3306, 3406, 3408, 3412, 3508, 3512, 3516 — classic CAT engines that power decades of construction, mining, and marine equipment worldwide
  • Industrial Engines: 3114, 3116, 3126, 3176, 3500 series — industrial power generation, marine propulsion, and stationary equipment applications

Product Types for CAT Equipment

We supply the complete range of hydraulic and engine pump products for Caterpillar equipment:

  • Hydraulic Piston Pumps (Main Pump & Pilot Pump): Complete pump assemblies for excavator main hydraulics, travel motors, swing motors, and pilot control circuits
  • Piston Pump Rebuild Parts: Valve plates, piston shoes, cylinder blocks, swash plates, seal kits, and ball guides for economical pump rebuilding — see our CAT piston pump parts collection
  • Hydraulic Gear Pumps: Charge pumps, steering pumps, fan drive pumps, and pilot pumps for CAT equipment auxiliary hydraulic circuits — see our CAT gear pump collection
  • Vane Pumps & Vane Pump Cartridges: Smooth, quiet pumps for CAT steering and auxiliary hydraulic systems — see our CAT vane pump collection and vane pump cartridge kits
  • Engine Water Pumps: Coolant circulation pumps for CAT diesel engines — see our CAT water pump collection
  • Engine Oil Pumps (Lube Pumps): Engine lubrication pumps for CAT diesel engines — see our CAT oil pump collection
  • Fuel Transfer Pumps: Fuel delivery pumps for CAT diesel engines — see our CAT fuel pump collection

Why Choose HE PUMP for Caterpillar Parts?

When your CAT equipment goes down, downtime costs money. HE PUMP helps you get back to work fast with:

  • OEM-Compatible Quality: Every part is manufactured to original Caterpillar dimensional and performance specifications — direct-fit installation with no modifications required
  • Comprehensive Inventory: We stock parts for the complete CAT equipment range, from compact excavators to mining trucks, reducing the need to source from multiple suppliers
  • 12-Month Warranty: All products include 12-month warranty coverage against manufacturing defects, giving you confidence in every purchase
  • Competitive Pricing: Dealer-level quality at significantly lower prices — save 40-60% compared to genuine CAT dealership pricing
  • Expert Support: Our technical team can help identify the correct parts for your specific pump model or equipment serial number — contact us for fast, accurate matching
  • Worldwide Shipping: Fast shipping to job sites, workshops, and warehouses worldwide, with express options available for urgent downtime situations

Get the Right Part for Your CAT Equipment

With 63+ Caterpillar products in stock, HE PUMP is your trusted source for CAT hydraulic pumps and engine components. Whether you're performing routine maintenance, repairing a failed pump, or rebuilding a hydraulic system, we have the parts you need. All products are in stock and ready to ship. Don't let a pump failure sideline your CAT equipment — browse our full Caterpillar collection below and request a quote today.

📧 Request a Quote for CAT Hydraulic Pumps or contact our technical team for help identifying the correct part for your specific CAT equipment model.