4.0L TDI V8 · Remanufactured
Remanufactured BOSCH 0445110158 (CRI2.1, 1600 bar) common-rail diesel injector for the Audi A8 (D3) 4.0 TDI V8 quattro (engine ASE, 2003–2005; incl. A8 L). Audi OE references 057 130 277 L / 057 130 277 M; Bosch exchange 0986435169. Note: the later 4.2 TDI V8 uses different piezo injectors (057130277AG/AK/AM) — always verify by the number etched on your old unit. Fully tested and calibrated to OEM specification with 12 months warranty.
ASE
Hard starting or extended cranking; rough or uneven idle; loss of power under load; excess smoke from the exhaust; cylinder misfire or contribution fault codes. When two or more appear together, suspect the injector before peripherals — a comparative leak-off test isolates the failed unit without tear-down.
Injector back-leak beyond specification; nozzle wear degrading the spray pattern; combustion gas leaks past the injector seat washer. Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.
Run a comparative leak-off (back-leak) test across all injectors before condemning a single unit. Compare requested vs actual rail pressure in live data at idle and under load. Inspect injector connectors and wiring before replacing hardware. Never condemn a common-rail injector on a fault code alone.
Each remanufactured 0445110158 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is calibrated on a common-rail test bench against the manufacturer's specification — delivery, back-leak and response verified — and despatched with a 12-month parts warranty and its calibration data on file.
The 0445110158 trusted family covers 1 verified vehicle fitments across 1 makes: Audi. Every fitment listed is registry-verified.
0445110158 cross-references 5 further OE numbers, including 057130277L, 057 130 277 L, 057130277M, 0986435169 and 0 986 435 169. Always match the reference etched on your failed unit's body.
UK diesel injector specialists supplying OEM tested and calibrated remanufactured injectors. Trusted by garages and mechanics nationwide with 12-month warranty on every part.