CAT 3406E C15 C16 Fuel Injector 109-5021 Electronic Unit Injector (EUI)
Product Details
| OEM Part No.: | 109-5021 / 109-5038 / 117-0481 / 117-0482 / 117-1148 | Reman Interchange: | 0R-4331 / 0R-4332 / 0R-4893 |
|---|---|---|---|
| Injector Type: | Electronic Unit Injector (EUI) | Engine Fitment: | CAT 3406E, C15, C16 |
| **Ready To Install**: | OEM-spec Sealing Surfaces And Electrical Connections; Bolt-on Fit, No Modification Needed. | Full After-Sales Support: | 3-month Warranty, Worldwide Shipping And Responsive Technical Support. |
| Highlight |
CAT 3406E fuel injector with warranty,C15 C16 electronic unit injector,109-5021 EUI fuel injection system |
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Product Description
CAT 3406E C15 C16 Fuel Injector 109-5021 109-5038 117-0481 117-0482 117-1148 – Electronic Unit Injector (EUI)
This electronic unit injector (EUI) is a direct, OEM-equivalent replacement for Caterpillar 3406E, C15 and C16 diesel engines. Cross-referenced against OEM part numbers 109-5021, 109-5038, 117-0481, 117-0482, 117-1148 and remanufactured numbers 0R-4331, 0R-4332, 0R-4893, it is a true bolt-on fit with no core required.
Each unit is flow-matched and 100% bench-tested for injection pressure, spray pattern and delivery volume — delivering consistent firing, faster cold starts, better fuel economy and lower smoke across the full load range. The hard-coated plunger resists wear from today's low-sulfur diesel, extending service life between overhauls.
Ideal for Class 8 on-highway trucks, underground loaders (R2900 class), mining and construction equipment, plus industrial and marine applications. Always verify fitment by engine serial number (ESN) before ordering.
We are a professional manufacturing factory dedicated to diesel engine spare parts. Our core product line covers diesel fuel injectors, injector nozzles, fuel injection pumps and complete injector repair kits. Backed by steady in-house stock, rigorous quality inspection and direct factory pricing, we partner with global wholesalers, maintenance workshops and machinery enterprises. We deliver premium reliable spare parts, fast lead time and all-round one-stop export service. We warmly welcome your inquiries and long-term business cooperation.
| # | Question | Answer |
|---|---|---|
| 1 | Which engines does this injector fit? | CAT 3406E, C15, C16 engines. |
| 2 | What OEM numbers does it replace? | 109-5021 to 117-1148 series. |
| 3 | Is it new or remanufactured? | Brand new, no core required. |
| 4 | Is each unit tested before shipping? | Yes, 100% flow and spray tested. |
| 5 | Which loaders does it suit? | Cat R2900 class underground loaders. |
| 6 | What warranty do you offer? | 6 months against manufacturing defects. |
| SKU | OEM No. | Reman/Interchange | Engine Fitment | Typical Applications |
|---|---|---|---|---|
| 109-5021 | 109-5021 | 10R-2781 | 3406E, C15 | Semi trucks, excavators, industrial power |
| 109-5038 | 109-5038 | 0R-4332, 10R-2782 | 3406E, C15, C16 | Trucks, R2900 loaders, heavy equipment |
| 117-0481 | 117-0481 | 10R-2782, 0R-4895 | 3406E, C15, C16 | Construction machinery, trucks |
| 117-0482 | 117-0482 | 0R-4331, 10R-2781 | 3406E, C15 | On-highway trucks, excavators |
| 117-1148 | 117-1148 | 0R-4893, 0R-4118, 10R-0958 | 3406E, C15, C16 | R2900 loaders, trucks, excavators |
Product Highlights
CAT 3406E C15 C16 Fuel Injector 109-5021 109-5038 117-0481 117-0482 117-1148 – Electronic Unit Injector (EUI) This electronic unit injector (EUI) is a direct, OEM-equivalent replacement for Caterpillar 3406E, C15 and C16 diesel engines. Cross-referenced against OEM part numbers 109-5021, 109-5038, ...
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