203-3771 Ca-terpillar Diesel Fuel Injector
Product Details
| 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,Caterpillar fuel injection system,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.
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 Highlights
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 ...
Bos-ch 0445110502 Common Rail Injector
Bos-ch 0445110502 Common Rail Injector Bos-ch 0445110502 Common Rail Fuel Injector for Diesel Engine Passenger Car & Light Commercial Vehicle We provide high-quality Bo-sch 0445110502 common rail fuel injectors for diesel passenger cars and light commercial vehicles. Adopting advanced common rail ...
Bos-ch Common Rail Fuel Injector 0445120125 For Diesel Engine
Bo-sch Common Rail Fuel Injector 0445120125 For Diesel Engine Our company supplies high-precision Bo-sch 0445120125 common rail fuel injectors, fully compatible with mainstream heavy-duty trucks and construction machinery diesel engines. Adopting original solenoid control structure, it supports up ...
8112660 Vo-Lvo Fuel System EUI Fuel Injector For FH12 Trucks
8112660Vol-vo EUI Fuel Injec 8112660 Vo-lvo EUI Fuel Injector is a high-output OEM electronic unit injector, perfectly compatible with Vol-vo D12A, D12C, D12D heavy-duty engines for FH12 trucks and EC360B/EC460B excavators. Adopting mature EUI electronic unit injection technology, it delivers ...
Cum-mins 4903319 Fuel Injector
Cum-mins 4903319 Fuel Injector The 4903319 diesel fuel injector is a premium OEM replacement for Cu-mmins M11, ISM11 and QSM11 heavy-duty diesel engines. Built with high-strength wear-resistant materials, this high-pressure injector ensures precise fuel metering and superior atomization for full ...
Please use our online inquiry contact form below if you have any questions, our team will get back to you as soon as possible.
