3973228 Fuel Injection Pump for Cumm 8.3L/8.9L Ccr Fuel Systems

• Product Overview

  Model 3973228 is a CP2-type CCR1600 common rail high-pressure fuel pump, the core fuel supply component for Cumm-ins medium-displacement diesel engines and Komatsu construction machinery power units. It precisely delivers constant ultra-high pressure fuel to the injector rail, stabilizing engine power output and optimizing fuel combustion efficiency. This aftermarket pump solves most fuel system breakdowns caused by original pump pressure drop, internal leakage and valve failure, widely used in transportation, engineering and agricultural equipment.

  Cross Reference OEM Numbers

  • Main OEM Part: 3973228
  • Equivalent Replacements: 4954200, 2897500, 4921431, 3975375
  • Komatsu Equivalent PN: 6745711170

  Full Fitment Range

  Supported Engine Models

  Cumm-ins ISC8.3 / QSC8.3 / ISL8.9 / QSL9 / ISLE4; Komatsu SAA6D114E

  Compatible Machinery

  • Road transport: Medium cargo trucks, passenger buses, heavy commercial vehicles
  • Construction gear: Komatsu PC300/PC350 excavators, WA430 wheel loaders
  • Farm & industrial gear: Large harvesters, stationary diesel generators

  Exclusive Product Advantages

  1. Strict OEM Calibration Standard
     
     
     Every pump is tested on professional diesel bench for delivery volume, pressure stability and internal leakage, consistent with factory original data, no power attenuation after installation.
  2. Heavy-Duty Anti-Wear Internal Assembly
     
     
     High-strength cast iron housing paired with wear-resistant alloy plunger and pressure valve, resistant to long-duration full-load operation of construction and transport equipment.
  3. Integrated Electronic Control Solenoid
     
     
     Built-in precision pressure regulating solenoid valve, directly compatible with original ECU wiring harness, zero modification required during installation.
  4. Optimized Fuel Economy & Emission Control
     
     
     Consistent stable high-pressure fuel supply realizes fine atomization, cuts excessive black smoke emission and lowers overall fuel consumption by 5%-8%.
  5. Direct OEM 1:1 Mounting Interface
     
     
     Identical mounting holes, oil pipeline ports and electrical connectors as original pump, drastically shorten vehicle maintenance downtime.

  Engine Malfunctions This Pump Fixes

  • Difficult cold startup, prolonged cranking without ignition
  • Fluctuating idle speed, obvious engine vibration and abnormal noise
  • Insufficient power output, weak climbing and heavy-load performance
  • Thick black exhaust smoke and sharply rising fuel consumption
  • Fuel seepage from pump housing
  • ECU triggered low fuel pressure fault codes
  • Automatic power derate during heavy work

  Complete Technical Parameters

  • OEM Part Number: 3973228
  • Cross Reference PN: 4954200, 2897500, 6745711170
  • Pump Type: CP2 CCR1600 Common Rail High Pressure Pump
  • Matching Engine: Cumm-ins ISC8.3/ISL8.9, Komatsu SAA6D114E
  • Application: Medium trucks, excavators, loaders, generators
  • Warranty Term: 12 Months
  • Minimum Order Quantity: 1 Piece
  • Stock Status: In stock, shipped within 1–3 business days

  Packaging & Global Shipping

  Independent shockproof neutral carton with customized foam inner lining to avoid collision damage during long sea or air transit. We support DHL, FedEx, UPS, air freight and sea freight for worldwide shipments. Unique tracking code will be sent to your email right after dispatch.

Wuhan Jinhong Auto Parts Co., Ltd. is a manufacturer and exporter of common rail fuel injectors integrating manufacturing,processing and R & D.

We specialize in Bos-ch, Denso, Del-phi, CAT common rail injectors. Equipped with complete QC system and professional R&D team, our products enjoy wide industry recognition for reliable quality.
As an integrated factory & trading enterprise, we provide one-stop supply service. With cooperative international logistics partners, we help clients cut shipping costs. We are a leading domestic supplier for auto and marine spare parts, partnering with hundreds of component manufacturers to guarantee ample stock.
We offer premium products at competitive prices with thoughtful service. Warmly welcome global customers for business negotiation and factory inspection.

Our goal is to provide the best service at the best price, your satisfaction is our best return. Look forward to working with you. Welcome friends from all walks of life to visit, guidance and business negotiations.