Cross-Reference: 1J801-53052

This cross-reference page covers OEM injector number 1J801-53052, a Bosch diesel injector reference used to identify compatible remanufactured replacements and equivalent OEM part numbers. In our verified trusted-family catalogue, 1J801-53052 maps to the Bosch 0445110777 master injector — a remanufactured unit that is OEM-tested, calibrated, and supplied with a 12-month UK warranty. It is most commonly fitted to engines using the KX040, KX040-4, L3301F, L3901F codes. Verified vehicle applications include Kubota KX040-4 Mini Excavator, Kubota L3301F / L3901F Compact Tractor, Kubota L4701F Compact Tractor, and other diesel models. 1J801-53052 has 3 known alternate references across Bosch, Delphi, Siemens VDO, and Denso catalogues — listed below for fitment confirmation. Use the sections below to confirm compatibility by engine code or vehicle before ordering. Every injector linked from this page is professionally remanufactured in our UK workshop and ships with full traceability.