Caterpillar original Diesel Fuel Injector Common Rail Nozzle Excavator Engine Parts 222-5972 10R-1306 Cross Reference 10R-9239 Replacement OEM Fuel Injector Pump Parts original new injector

Serving CAT 3126-series engine aftermarket needs, this 222-5972 HEUI diesel fuel injector is built as an original OEM replacement unit compatible with 3126, 3126B and 3126E HEUI diesel engine platforms. Aligned with OEM quality standards, this fuel system component carries the core OE identifier 222-5972 and belongs to the 3126 injector product line, delivering a standardized replacement solution for distributors, maintenance providers and fleet operators sourcing parts for heavy-duty diesel engines.

The unit supports a full range of listed cross-reference and universal part numbers, covering hyphenated, non-hyphenated and region-specific formatting variants such as 2225972, 0R-9350, OR9350, 10R-9239, 196-4229, 173-9272 and 12 additional interchange identifiers. This broad cross-compatibility reduces part selection errors for bulk buyers and service teams, as staff can match numbers against worn unit markings, existing inventory or OEM service references quickly, streamlining procurement and repair planning workflows for B2B customers.

Engineered for heavy-duty diesel engine applications, this injector fits power systems deployed across truck, industrial, marine and construction operating environments, making it a versatile SKU for parts suppliers serving multiple commercial and industrial equipment segments. As a direct OEM replacement part, it supports direct fitment during standard fuel system service, and is well suited for wholesale stocking, regional distribution, and large fleet maintenance procurement to support ongoing aftermarket parts supply.