331-8905 PUMP GP-ENGINE OIL | REPLACEMENT FOR CATERPILLAR

3318905 331-8905

  • Application: 330C
  • Customization: labels and logo
  • Delivery: 7-15 working days
  • Certifications: ISO9001/ITS

Height (in):
11.8
Length (in):
6.0
Material:
Aluminum alloy

HYDSTAR® oil pumps effectively reduce wear on engine and transmission systems and prevent mechanical damage caused by poor lubrication by maintaining an efficient, stable lubricating oil circulation. Whether for routine maintenance, major overhauls, or component replacement, HYDSTAR® oil pumps deliver reliable lubrication and oil supply solutions under demanding operating conditions.

Our oil pumps feature precision-machined, wear-resistant stainless steel drive shafts; durable gears (or impellers) designed to provide stable oil pressure and superior flow rates; and hardened bearing retaining rings that enhance bearing stability. Optimized, high-quality oil seals and gaskets help prevent internal leakage, minimize wear, and significantly extend service life.

Each HYDSTAR® oil pump is manufactured to strict quality standards and undergoes rigorous pressure and flow testing to ensure reliable performance, durability, and consistent oil delivery efficiency. Designed specifically for various types of heavy-duty equipment and high-load applications, HYDSTAR® oil pumps help extend the lifespan of core components, ensure efficient engine operation, and deliver reliable overall performance.

Track Loader

973C 973D

Petroleum Engine

C9

Industrial Engine

C9 C-9

Wheel Dozer

814F II

Site Prep Dozer

586C

Engine - Machine

C9 C-9

Wheel Tractor

637G

Petroleum Package

TH31-C9P

Marine Engine

C9

Landfill Compactor

816F II

Motor Grader

12H 140M 160M 2 160M 140M 2

Generator Set

C9

CHALLENGER

MTC735 MT765 MTC745 MT755 MTC755 MT745 MTC765 MT735

Truck Engine

C9 C-9

Excavator

330D MH 330C LN 336D 336D2 L 330D LN 330C L 340D2 L 336D L 336D2 330C 330C FM 330D 336D LN 340D L 330C MH 330D L 330D FM

Track Feller Buncher

521B 532 TK732 2590 2390 2391 522B 541 TK722 552 2 TK721 TK752 TK751 551 552 511 TK711 541 2 2491 2290 522 521

Single Drum Vibratory Compactor

815F II

Track-Type Tractor

D7R D6R III D7R LGP D6R XL D6R D6T D6R LGP D6R II D7R XR

Wheel Tractor-Scraper

627G 637E 637G 637D

Mobile Hydraulic Power Unit

330D 330D L 330C 336D 336D L

Generator

SR4B

Product Introduction

Exceptional Durability

 

Manufactured from high-strength materials and precision-machined components, our Engine Oil Pumps are built to deliver dependable performance under demanding operating conditions. Critical internal parts are engineered for excellent wear resistance, dimensional stability, and long-term durability, helping the pump maintain consistent performance during continuous engine operation. Whether used in construction, mining, earthmoving, or other heavy-duty applications, the pump is designed to withstand high temperatures, vibration, pressure fluctuations, and extended working hours, helping reduce premature wear, unexpected downtime, and frequent replacement costs.

OIL PUMP

Stable Oil Pressure

 

Our Engine Oil Pumps are developed for a wide range of Caterpillar engines and heavy-duty equipment, providing reliable replacement solutions for different machinery and operating requirements. They can be used in excavators, wheel loaders, bulldozers, motor graders, compactors, generators, and other Caterpillar-powered equipment. With multiple specifications available, each pump is designed with careful attention to mounting dimensions, oil passages, connection points, and operating parameters, helping ensure accurate installation, dependable compatibility, and stable engine lubrication performance across a variety of demanding

 

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Request A Free Quote

Don't hesitate to contact us. HYDSTAR HYDRAULIC experts are very happy to help you, provide a variety of flexible and reliable solutions to help you solve various problems.