CAT C9 family
CAT C9 Injectors & HEUI Pumps
C9, C-9 and C9.3 are three different systems. This page covers the C9 (HEUI) family.
387-9434
CAT C9 (HEUI)
New (reproduction) · Listed for CAT C9 (HEUI) — E330D, E336D excavators; D6R, D7R track-type…
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293-4071
CAT C9 (HEUI)
New (reproduction) · Listed for CAT C9 (HEUI) — D6R III, D6T track-type tractors
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235-5261
CAT C9 (HEUI)
New (reproduction) · Listed for CAT C9 (HEUI) — excavators, motor graders
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188-8739
CAT C-9 (HEUI), Remanufactured
Remanufactured · Listed for CAT C-9 (HEUI) — note: C-9 differs from C9 ACERT; confirm by…
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363-0493
CAT C9.3 / C9.3B (Common Rail)
New (reproduction) · Listed for CAT C9.3 / C9.3B (common rail) — confirm engine version and …
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476-8766
CAT C9
New (reproduction) · Listed for CAT C9 (as listed on our export store)
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C9-family cross-reference numbers
Identification only — this table does not state which numbers are interchangeable. Confirm by the old part number.
235-5261 267-3360 387-9439 236-0957 267-3361 557-7634 238-8092 267-9710 20R8065 242-0857 267-9717 20R8060 254-4330 267-9722 20R8968 254-4340 293-4073 20R9433 265-8106 293-4074 20R8846 266-4446 10R7222 293-4067 387-9433 10R4764 293-4066 387-9438 20R8064 254-4339 557-7633 20R1917 235-5518 553-2592 10R1582 166-1759 573-4231 245-3516 10R7223 10R7221 328-2576 10R2828 387-9432 10R4844 387-9434 20R8063 387-9436 328-2574 387-9437 328-2580 557-7637 387-9431 188-8739 217-2570 235-2888 235-9649 236-0962 10R7224 172-5780
Engine FAQ
Questions buyers ask about the CAT C9
Is the CAT C9 common rail?
No — the C9 (HEUI) is not; the C9.3 is. Same name family, different fuel systems, no shared injectors. This page covers the C9 HEUI family only.
Which C9 injector number do I need?
235-5261, 293-4071 and 387-9434 are the C9 HEUI numbers we supply most, against a 50+ number identification table on this page. The stamped number on your old injector selects the version.
What is the difference between C9 and C-9?
The hyphen: C-9 is a different HEUI generation whose injectors (188-8739) are commonly supplied remanufactured. C9 and C-9 parts are not interchangeable.
Do you supply C9 pumps?
Yes — HEUI actuation and high-pressure oil pumps for the C9, including 20R1635, 384-0607 and the 476-87xx group. Confirm the variant by the old pump number and faceplate photo.
Send the old injector number
We match it against the C9 family table and confirm the exact version before quoting.
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