Bosch 13537808089 Diesel Injector

On the 3.0L Diesel platform, a failing Bosch 13537808089 injector typically presents as: hard starting when warm; uneven idle with single-cylinder knock; loss of power / limp mode with rail-pressure faults; excess smoke on hard acceleration; individual cylinder misfire entries.

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: injector back-leak rising with temperature on high-mileage units; nozzle wear causing over-fuelling on individual cylinders; electrical connector corrosion causing intermittent circuit faults.

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

Six-cylinder layout — always compare leak-off volumes across all six injectors, not just the suspect one. A warm-engine leak-off test is more conclusive than a cold test on this platform. Check smooth-running (cylinder balance) live data to identify the offending cylinder before removal.

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 13537808089 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 13537808089 trusted family covers 6 verified vehicle fitments across 1 make: BMW. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

13537808089 supersedes or cross-references 8 further OE numbers, including 13537796042, 0445115077, 0445110131, 0445110080, 13537789661, 13537805656, 0445115050 and 0986435359. 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.