Caterpillar original Diesel Engine Fuel Injector 171-9704 for 3412 Engine Replacement for OEM 198-4752, Cross Reference 153-5938, 232-1175, compatible with Caterpillar 3408 original new injector

The CAT 171-9704 diesel fuel injector is a precision, original-quality heavy-duty injection component supplied for Caterpillar engine repair, remanufacturing programs, and industrial aftermarket distribution. Searchable via alternate formatted part numbers 1719704 and CA1719704, it is linked to a full database of OE, replacement, reman, and supplier-listed cross-reference numbers. Key public-channel references include 456-3509, identified by Caterpillar’s official parts channel as a common rail fuel injector, and 20R-5075, the official Cat Reman alternative, for broad search coverage.

This injector fits core Caterpillar industrial engine series: C9.3, C9, 3126, 3126E, and 3126B. It is compatible with a wide range of official and supplier-listed heavy equipment and general machinery models, including D6T, D7E, 725C, 336F, 340F, 140M, 966M, and 972M among other confirmed units. It is tailored for professional B2B buyers, diesel repair shops, fleet maintenance teams, equipment rebuilders, importers, exporters, and industrial parts distributors that source parts by OE number, engine model, or machine model.

To guarantee correct fitment, buyers must verify application details before ordering, including the old injector part number, engine serial number, machine model, engine model, and fuel system type. While supplier databases list 171-9704 alongside C9.3-related part numbers, official Caterpillar data distinguishes between new common rail injectors and reman alternatives, making serial-number confirmation critical. This structured cross-reference framework supports accurate, efficient sourcing for B2B procurement and maintenance workflows.