Vehicle Compatibility

• Equipment Brand: Caterpillar

• Part Type: Common Rail Diesel Fuel Injector

• Primary Reference Number: 456-3493

• Remanufactured Reference Number: 20R-5036

• Engine Model: C9.3

• Equipment Type: Wheel Loader, Excavator, Motor Grader, Track-Type Tractor, Wheel Tractor-Scraper and Forestry Machine

Compatible Caterpillar Equipment Models

• Wheel Loaders: 966K, 966K XE, 972K

• Excavators: 336E, 336E H, 336E L, 336E LH, 336E LN, 336E LNH

• Forestry Machines: 568 FM, 568 FM LL

• Motor Graders: 12M2, 140M2, 160M2

• Track-Type Tractors: D6T, D6T LGP, D6T XL, D6T XW, D7E, D7E LGP

• Wheel Tractor-Scraper: 627H

• Mobile Hydraulic Power Units: 336E, 336E HVG

Compatibility Notes

• Caterpillar's parts catalog lists 456-3493 as a common rail fuel injector and 20R-5036 as a remanufactured injector reference. The catalog lists 966K, 966K XE and 972K among the compatible models.

• The injector is associated with the C9.3 engine application.

• The exact fitment depends on machine configuration and serial number.

• Verify the original injector number and engine identification before ordering.

• Do not assume compatibility with other C9 or C9.3 engine versions without checking the parts catalog.

FAQ

Q1: Which engine uses fuel injector 456-3493?

The injector is listed for Caterpillar C9.3 engine applications.

Q2: Is 20R-5036 a reference number for 456-3493?

Yes. Caterpillar lists 20R-5036 as a remanufactured injector reference associated with 456-3493.

Q3: Is this injector compatible with CAT 966K and 972K wheel loaders?

Both 966K and 972K are listed in Caterpillar's compatible-model information. Confirm the machine serial number before ordering.

Q4: Which other Caterpillar machines are listed?

Listed applications include selected 336E excavators, 568 FM forestry machines, 12M2, 140M2 and 160M2 motor graders, D6T and D7E tractors, and the 627H wheel tractor-scraper.

Q5: How can I confirm compatibility?

Compare the original injector number with 456-3493 or 20R-5036 and verify the engine model and machine serial number against the applicable Caterpillar parts catalog.