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386-1769 20R-1278 EUI Fuel Injector for Ca-terpillar CAT 3512B Diesel Engine
Basic Properties
Trading Properties
| OEM Part No.: | 386-1769 | Reman Interchange: | 20R-1278 |
|---|---|---|---|
| Injector Type: | Electronic Unit Injector (EUI) | Engine Fitment: | Selected CAT 3512B Diesel Engines |
| Ready To Install**: | OEM-Reference Fit, Direct Replacement | Full After-Sales Support: | 6–12-month Warranty, Technical Support And Replacement Service For Confirmed Manufacturing Defects |
| Highlight | Caterpillar 3512B fuel injector,EUI fuel injector for Caterpillar,CAT 3512B diesel engine injector |
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386-1766 20R-1275 EUI Fuel Injector for Ca-terpillar CAT 3508B 3512B 3516B Engines
Restore engine power, smooth operation and fuel efficiency with the 386-1769 EUI fuel injector, commonly cross-referenced with 20R-1278 and 392-0217. Built to OEM-reference specifications and bench-tested for accurate fuel delivery, consistent atomization and reliable heavy-duty performance.
Suitable primarily for selected CAT 3512B diesel engines used in marine auxiliary and power-generation applications. Confirm compatibility using the original injector number, engine serial number, arrangement number and injector calibration.
Available from MOQ 1 pc, with fast worldwide shipping and a 6–12-month warranty, it provides a reliable and cost-effective replacement option for compatible OEM applications.
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? | Primarily selected CAT 3512B diesel engines. |
| 2 | New or reman? | 100% new and bench-tested before shipment. |
| 3 | OE interchange? | 386-1769 / 20R-1278 / 10R-3255 / 230-9457 / 392-0217. |
| 4 | Which applications? | Marine auxiliary engines, generator sets and selected power-generation systems. |
| 5 | Warranty and shipping? | 6–12-month warranty, with worldwide delivery by DHL, FedEx, UPS, air or sea freight. |
| 6 | Plug-and-play? | Direct replacement for confirmed applications; verify the ESN, arrangement number and injector calibration. |
| Part No. | Interchange No. | Engine Fitment | Typical Applications | Notes |
|---|---|---|---|---|
| 386-1752 | 20R-1264, 10R-1284, 392-0200 | CAT 3508B, 3512B and 3516B | Generator sets, marine engines, industrial engines and petroleum equipment | Discontinued; 392--0200 isis the newer reference. |
| 386-1766 | 20R-1275, 10R-1290, 392-0214 | CAT 3508/3508B, 3512/3512B and 3516/3516B | Marine, industrial and locomotive engines | Confirm injector calibration and engine arrangement. |
| 386-1769 | 20R-1278, 10R-3255, 230-9457, 392-0217 | Primarily CAT 3512B; selected 3508B and 3516B arrangements | Marine auxiliary engines, generator sets and power modules | Applications vary within the replacement family. |
| 386-1776 | 20R-1283, 392-0224 | CAT 3508B/3508C and 3516/3516B/3516C | Marine engines | CAT publishes limited compatibility information for the original number. |
| 392-0200 | 20R-1264, 11R-0285, 386-1752, 250-1300 | CAT 3508/3508B, 3512/3512B and 3516B | Generator sets, marine, industrial, petroleum and off-highway applications | Current replacement family for several earlier injector numbers. |
| 392-0201 | 11R-0680, 20R-1265, 386-1753, 250-1301 | CAT 3512B and 3516B | Generator sets, marine engines, PM3516 power modules and petroleum engines | Do not interchange with 392-0200 without calibration confirmation. |
| 392-0202 | 11R-0279, 20R-1266, 386-1754, 250-1302 | CAT 3512B and 3516B | Marine engines, generator sets and locomotive engines | Match the ESN, arrangement number and power rating. |
| 392-0204 | 20R-1268, 250-1304, 229-0200 | CAT 3508/3508B, 3512 and 3516/3516B | Marine engines and generator-set engines | Different engine ratings may use different EUI calibrations. |
| 392-0205 | 11R-0681, 20R-1269, 386-1757, 250-1305 | CAT 3508C, 3512B/3512C and 3516B/3516C | Marine, industrial, petroleum, locomotive and generator-set applications | Primarily used in selected C-series engine arrangements. |
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