4W7021 Ca-terpillar Diesel Fuel Injector
Product Details
| Part Number: | 4W7021 | Product Type: | Diesel Fuel Injector |
|---|---|---|---|
| Compatible Engine: | Cat 3408, 3408B/C, 3412 Diesel Engines | Application: | Heavy‑duty Trucks, Excavators, Industrial Machinery, Marine Equipment |
| Supply Option: | Brand New Or Remanufactured | Warranty Period: | 12 Months |
| Highlight |
Caterpillar diesel fuel injector,Caterpillar fuel injection system,4W7021 fuel injector |
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Product Description
4W7021 Ca-terpillar Diesel Fuel Injector
4W7021 is a Ca-terpillar mechanical pencil‑style diesel fuel injector. It features stable fuel atomization performance and strong durability for heavy‑load working scenarios, serving as a reliable direct‑replacement component for Ca-terpillar heavy‑duty diesel engines. It fits Ca-terpillar 3408, 3408B/C, 3412 diesel engines, widely applied on heavy‑duty trucks, excavators, industrial machinery and marine equipment. Cross‑reference OEM number is H4W7021. Please verify your original part number and engine serial number before purchase.
Every injector is bench-tested for fuel delivery, injection response, sealing and operating stability. Please confirm the original injector number, AA code, engine serial number and model year before ordering.
| No. | Question | Answer |
|---|---|---|
| 1 | Which engines does 4W7021 injector fit? | Cat 3408, 3408B/C, 3412 diesel engines. |
| 2 | What OEM numbers does 4W7021 replace? | 4W7021, H4W7021. |
| 3 | What reman numbers cross over with 4W7021? | H4W7021. |
| 4 | Which machines use the 4W7021 injector? | Heavy‑duty trucks, excavators, industrial machinery, marine equipment. |
| 5 | Is 4W7021 injector tested before shipping? | Yes, every unit is 100% bench flow and spray tested before dispatch. |
| 6 | What warranty do you offer for 4W7021? | 12‑month warranty against manufacturing defects. |
| No. | OEM No. | Reman/Interchange | Engine Fitment | Typical Applications |
|---|---|---|---|---|
| 1 | 4W7017 | 0R3421, 8N7007 | Cat 3406, 3406B/C, 3408, 3412, 3306 | Excavator 245/245B/245D, wheel loader 980C/980F, trucks, marine |
| 2 | 4W7018 | 0R3422 | Cat 3406B/C, 3408, 3408B/C, 3412, 3412C | Scrapers 631/637, trucks, excavators, marine |
| 3 | 4W7019 | 0R3536 | Cat 3408, 3408B/C, 3412, 3412B/C | Tractor D9L/D9N/D10N, generator sets, industrial |
| 4 | 4W7020 | 0R8791 | Cat 3408, 3408B/C, 3412, 3412B/C, PM3412 | Generator SR4, industrial, marine |
| 5 | 4W7021 | 0R3421 family (CTP H4W7021) | Cat 3408, 3412 | Trucks, excavators, industrial |
| 6 | 4W7026 | 0R3423 (7W7026) | Cat 3406, 3406B/C, 3412, 3412C | Trucks, excavators, generator sets |
| 7 | 4W7031 | 7W7031 | Cat 3406B, 3406C, 3412C | Excavators, trucks, generator SR4 |
| 8 | 4W7032 | 0R3424, 0R1747, 0R8461 | Cat 3406, 3406B/C, 3412 (3400 series) | Excavators, industrial, trucks |
| 9 | 4W7037 | 0R3425, 9Y3070 | Cat 3406, 3406B/C, 3408, 3412/3412C | Excavator 375/375L, generator SR4 |
| 10 | 7W7038 | 0R4124, 170‑5187 | Cat 3306, 3306B | Trucks, industrial, marine |
| 11 | 7W7045 | 0R3591, 170‑5181, 1705183, 8M1584 | Cat 3306, 3306B, 3400 series | Excavator 973/973C, D7, trucks, marine |
Product Highlights
4W7021 Ca-terpillar Diesel Fuel Injector 4W7021 is a Ca-terpillar mechanical pencil‑style diesel fuel injector. It features stable fuel atomization performance and strong durability for heavy‑load working scenarios, serving as a reliable direct‑replacement component for Ca-terpillar heavy‑duty ...
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