384-0678: Caterpillar HEUI Actuating Pump 384-0678 | High Pressure Oil Pump for CAT C9 – Fits D6R D7R 637E
Product Details
| **Exact OE Fitment** – Replaces: | 1. Replaces 319-0676 / 20R-1636 / 384-0677 / 384-0678 / 476-8766 / 476-8769 / 384-0607; Cross-refers To 204-4945, 476-8768, 20R-1635, 20R-1649 And 10R-8900. | **Precision HEUI Actuation**: | Supplies Stable High Oil Pressure To Drive HEUI Unit Injectors For Precise Injection Timing And Metering. |
|---|---|---|---|
| **Wide C7/C9 Coverage**: | Fits CAT 3126E, C7, C7.2 And C9 Engines In Excavators (324D–340D), Tractors (D6R, D7R), Scrapers (637D–637G), Motor Graders (12H–160K) And Loaders (525C–545C). | 100% Bench Tested: | Every Unit Pressure- And Flow-tested Before Shipment; Sealing Surfaces Protected For Safe Handling. |
| Ready To Install: | OEM-spec Mounting, Hardened Gears And Seals Per OE Design. | Full After-Sales Support: | 3-month Warranty, Worldwide Shipping And Responsive Technical Support. |
| Highlight |
Caterpillar HEUI actuating pump 384-0678,High pressure oil pump for CAT C9,D6R D7R 637E fuel injection pump |
||
Product Description
384-0678: Caterpillar HEUI Actuating Pump 384-0678 | High Pressure Oil Pump for CAT C9 – Fits D6R D7R 637E
This HEUI high-pressure oil pump (actuating pump) is a high-quality aftermarket replacement for Caterpillar C9 HEUI fuel injection systems. It replaces OE part number 384-0678, cross-referenced to the remanufactured number 20R-1636 and T402521. The pump builds and maintains the high oil pressure required to actuate HEUI unit injectors, delivering precise injection timing and metering for reliable starting, stable idle and full rated power. Hardened pumping gears and precision-machined housing stand up to sustained high-pressure operation, with OEM-spec mounting and sealing surfaces for a leak-free, bolt-on fit. Every unit is bench-tested for pressure and flow before shipment. Fits Caterpillar track-type tractors (D7R, D6R), wheel tractor-scrapers (637E, 637D, 637G) and hydraulic excavators (E330D, E336D). Export-packed, 12-month warranty and responsive technical support. Aftermarket replacement part — not a genuine Caterpillar product. "Caterpillar" and "CAT" are trademarks of their respective owners, used for reference only.
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 | Is this a genuine Caterpillar part? | No, it is an aftermarket replacement. |
| 2 | Which engines does it fit? | CAT C7 & C9 engines (3126E). |
| 3 | Which OE numbers? | 384-0677, 476-8766, 319-0676… |
| 4 | Is it new or remanufactured? | New or reman; bench-tested before shipping. |
| 5 | Does it need coding after install? | No. This pump needs no coding. |
| 6 | What warranty do you offer? | 12-month warranty on defects. |
| Part No. | OE Cross Reference | Type / Reman | Engine Fitment | Key Applications |
|---|---|---|---|---|
| 319-0676 | 204-4945 | HEUI HP oil pump | C9 | 330C(FM/L/MH/LN),TK711–TK732,12H |
| 319-0607 | 384-0607 · 271-2234 · 2R0819 | HEUI actuator pump | C-9 | E330C |
| 20R-1636 | 384-0678 · 476-8769 · 10R-8900 | Cat Reman Injector Hydraulic Pump | C9 | D6R, D7R, 637E/637G, E330D, E336D, 586C, 814F–816F, D250GC/D300GC |
| 384-0677 | 20R-1635(Reman) | PUMP GP · HEUI | C7 · C9 | 324D, 325D FM, 330D, 336D, 340D L, E336D |
| 384-0678 | 20R-1636(Reman)· T402521 | HEUI actuator pump | C9 | D7R, D6R, 637E/637D/637G, E330D, E336D |
| 476-8766 | 20R-1635(Reman)· 254-4358* | HEUI actuator pump · rebuilt | C7 | 330C, 324D, 329D, 330D, 336D, E325D, E329D, E336D |
| 476-8769 | 20R-1636(Reman)· 384-0678 | Hydraulic Injector Pump Group · 12V | C9 | 586C, 637E/637G/637D, D6R III, D7R, 814F/815F/816F, D250GC/D300GC, 330D/336D |
| 384-0607 | 476-8768 · 20R-1649(Reman)· 319-0607 | PUMP GP · HEUI | C7 · C7.2 · C9 | 120K/12K/12M, 140K/140M, 160K, 525C/535C/545C, 521B/522B, E330C, E330D2 |
Product Highlights
384-0678: Caterpillar HEUI Actuating Pump 384-0678 | High Pressure Oil Pump for CAT C9 – Fits D6R D7R 637E This HEUI high-pressure oil pump (actuating pump) is a high-quality aftermarket replacement for Caterpillar C9 HEUI fuel injection systems. It replaces OE part number 384-0678, cross-referenced ...
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.
