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203-3771 Ca-terpillar Diesel Fuel Injector

Quality 203-3771 Ca-terpillar Diesel Fuel Injector factory
Quality 203-3771 Ca-terpillar Diesel Fuel Injector factory
Quality 203-3771 Ca-terpillar Diesel Fuel Injector factory
Quality 203-3771 Ca-terpillar Diesel Fuel Injector factory
Quality 203-3771 Ca-terpillar Diesel Fuel Injector factory

Basic Properties

Place of Origin:guangdong
Brand Name:Ca-terpillar
Model Number:203-3771

Trading Properties

Minimum Order Quantity:One
Price:100💲 Up to 200💲
Standard Packaging:Neutral packaging
Delivery Time:3 to 7 days
Payment Terms:L/C,D/A,D/P,T/T,Western Union
Supply Ability:1000
Specifications
Part Number: 203-3771 Product Type: Diesel Fuel Injector
Compatible Engine: Ca-terpillar 3126, 3126B And 3126E Diesel Engines Application: Truck, Marine, Industrial & Machinery
Supply Option: Brand New Or Remanufactured Warranty Period: 12 Months
Highlight

Caterpillar diesel fuel injector

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Caterpillar fuel injection system

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203-3771 Caterpillar injector
Product Description

203-3771 HEUI Fuel Injector for Ca-terpillar 3126, 3126B and 3126E Diesel Engines

203-3771 Fuel Injector is a hydraulic electronic unit injector (HEUI) designed for selected Ca-terpillar 3126, 3126B and 3126E diesel engine applications. It uses high-pressure engine oil and electronic control to accurately pressurize, meter and inject fuel, supporting stable combustion, efficient fuel use and reliable engine performance.

It is suitable for selected 322C, 322C FM, 325C, 325C FM and 325C L excavators, M325C MH material handlers, 950G II and 962G II wheel loaders, 570B and 580B wheel harvesters, commercial trucks and industrial equipment. Please verify the original part number, engine serial number, arrangement number and equipment model before ordering.

203-3771 HEUI Fuel Injector is designed as a direct-fit replacement for the correct engine configuration. Its commonly associated Cat Reman reference is 10R-1262, with 204-6714, 222-5963 and EX631262 frequently listed as replacement or cross-reference numbers. Professional installation and any required injector setup or ECM calibration should follow the applicable engine service manual.


Manufactured with wear-resistant precision components and a reliable sealing structure, this injector withstands continuous vibration and demanding working conditions. It helps address hard starting, unstable idle, power loss, excessive fuel consumption and black smoke.


Every  Fuel Injector we supply undergoes professional bench testing. Injection quantity, spray pattern, sealing performance and operating stability are inspected to ensure reliable fuel delivery and consistent engine performance.


We are a professional wholesale supplier of full-series Ca-terpillar fuel injectors, covering 320D C6.4, C7, C9.3, C11/C13, C15, C175 and other heavy-duty engine parts.
All injectors are strictly tested to meet OEM standards. We support custom packaging, bulk orders and fast global shipping.

We provide high-quality injectors, competitive factory prices and reliable after-sales service for global machinery maintenance clients.

Q1: What is the 203-3771 Fuel Injector?

A: The 203-3771 is a HEUI hydraulic electronic unit injector designed for selected Ca-terpillar 3126, 3126B and 3126E diesel engines.

Q2: What equipment uses 203-3771?

A: It is suitable for selected 322C/325C excavators, M325C MH material handlers, 950G II/962G II wheel loaders, 570B/580B wheel harvesters, commercial trucks and industrial equipment.

Q3: What are the cross-references for 203-3771?

A: Its commonly associated Cat Reman reference is 10R-1262, with 204-6714, 222-5963 and EX631262 listed as replacement or cross-reference numbers. Compatibility must be confirmed using the original injector number, engine serial number and arrangement number.

Q4: Does 203-3771 require electronic programming?

A: Electronic programming is not always required. However, the ECM injector calibration settings should be checked, and installation must follow the applicable engine service manual.

Q5: Is the injector tested before shipment?

A: Yes. Each injector is professionally bench-tested for fuel delivery, injection response, sealing performance and operating stability before shipment.

Q6: Is 203-3771 available new or remanufactured?

A: We can supply new aftermarket and remanufactured replacement options, subject to compatibility confirmation and stock availability. All supplied injectors include a 12-month warranty.

Ca-terpillar Mechanical Fuel Injector Application Table

Serial No. Ca-terpillar OE Part Number Cross-Reference Numbers Compatible Engine Compatible Vehicles & Equipment Injector Type Injection System Unit Weight Production Year Range Connector Type Quality Options Installation Note
1 178-6342 10R-1257, 177-4752 3126B, 3126E D5N/D6N tractors; 561N pipelayer; IT38G II; 953C/963C; 120H/135H; 938G II HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
2 188-1320 0R-9348, 145-9360, 155-1819, 157-3727, 173-1012, 173-4566, 173-9379, 222-5965, EX639348 3126B, 3126E Selected commercial trucks and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
3 196-1401 0R-9349, 10R-9238, 126-0499, 131-7150, 173-4059, 173-9267, 173-9268, 222-5967, EX639349 3126, 3126B, 3126E Selected commercial trucks, excavators and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
4 196-4229 0R-9350, 10R-9239, 141-7837, 169-7410, 173-1013, 173-9272, 222-5972, EX639350 3126, 3126B, 3126E Selected commercial trucks, excavators and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
5 197-7107 10R-0781, 198-6605, 199-6065, 222-5966, EX630781 3126, 3126B, 3126E Selected commercial trucks, excavators and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
6 198-6605 10R-0781, 197-7107, 199-6065, 222-5966, EX630781 3126B, 3126E; selected C7 marine engines Selected commercial trucks, marine engines and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
7 199-6065 10R-0781, 197-7107, 198-6605, 222-5966, EX630781 3126, 3126B, 3126E Selected commercial trucks, excavators and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
8 203-3771 10R-1262, 204-6714, 222-5963, EX631262 3126, 3126B, 3126E 322C/325C excavators; M325C MH; 950G II/962G II; 570B/580B; selected trucks and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
9 204-6714 10R-1262, 203-3771, 222-5963, EX631262 3126, 3126B, 3126E 322C/325C excavators; M325C MH; 950G II/962G II; 570B/580B; selected trucks and industrial equipment HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration
10 205-1285 10R-0782, 10R-9237, 177-4754, 178-0198, 178-0199, EX630782 3126B, 3126E 322C/325C excavators; M325C MH; IT62G II; 950G II/962G II; 570B/580B; SPP101; selected trucks HEUI unit injector Hydraulic electronic unit injection Approx. 1.30 kg Verify by ESN HEUI electrical connector; verify plug New aftermarket / Remanufactured Verify OE number, ESN and arrangement number; replace seals and check ECM calibration


Product Tags
direct injection fuel injector cat fuel injectors Ca-terpillar common rail fuel system
Contact Details
Guangzhou Zhuohang Auto Parts Co., Ltd.

Contact Person: Mr. Logan Wu

Tel: 86--13523778555

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