Bosch 0445116022 Diesel Injector

On the 3.0L V6 TDI platform, a failing Bosch 0445116022 injector typically presents as: hard starting when warm; uneven idle with single-cylinder knock; loss of power / limp mode with rail-pressure faults; injector group supply-voltage faults; excess smoke on hard acceleration.

When two or more of these appear together, suspect the injector before peripheral systems — a comparative leak-off test and live-data cylinder-balance review will isolate the failed unit without tear-down.

The documented failure modes on this platform are: piezo injector electrical failure logging group voltage codes; injector back-leak rising with temperature on high-mileage units; fuel contamination damage following hp pump wear.

Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

Six-cylinder V layout — compare leak-off volumes across both banks before condemning an injector. Group voltage codes usually mean one shorted piezo injector pulling down the shared supply — test each in the group. Injector coding via ODIS/VCDS is required after replacement.

Never condemn a common-rail injector on a fault code alone — codes identify the circuit or cylinder, while leak-off volumes and correction values identify the component.

Each remanufactured 0445116022 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is then calibrated on a common-rail test bench against the manufacturer's specification sheet — delivery, back-leak and response are all verified before the injector is sealed and despatched with its calibration data on file.

Every unit carries a 12-month parts warranty and free UK delivery.

The 0445116022 trusted family covers 9 verified vehicle fitments across 3 makes: Audi, Volkswagen and Porsche. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

0445116022 supersedes or cross-references 16 further OE numbers, including 0445116023, 0986435357, 0986435379, 0445116007, 0445116008, 0445116014, 0445116015 and 0445116047. Always match the reference etched on your failed unit's body — cross-references within a family are verified equivalents, but etched numbers remain the source of truth.