Bosch 0445117027 Diesel Injector

3.0L V6 TDI CR · Remanufactured

Remanufactured Bosch 0445117027 piezo common-rail diesel injector for the VAG / Porsche EA897 3.0 V6 TDI — engine codes CKVB, CKVC, CTBA, CTBB, CTBC, CTBD, CVVA, CVWA. Fits Audi A6/A7/Q5 3.0 TDI, VW Touareg (7P) 3.0 V6 TDI and Porsche Macan / Cayenne 3.0 Diesel. Direct replacement for Audi OE 059130277CH / 059130277EK, Porsche 95811012841 and Bosch cross-references 0445117026, 0445117075, 0986435453. OEM-tested and calibrated with full flow and leak-back verification on CR318 PRO test bench. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 21 days.

Shared engine codes

CKVB, CKVC, CTBA, CTBB, CTBC, CTBD, CVVA, CVWA

Compatible vehicles

Common 0445117027 injector failure symptoms

Uneven or unstable idle; ticking or knocking from the engine; hard or intermittent starting; hissing / chuffing with exhaust smell when an injector washer leaks; reduced power, hesitation or limp mode with warning lights. When two or more appear together, suspect the injector before peripherals — a comparative leak-off test isolates the failed unit without tear-down.

What causes these injectors to fail

Piezo injector electrical faults logging group supply-voltage codes; injector correction values drifting out of range as the piezo stack ages; injector sealing washer leaks allowing combustion blow-by around the injector. Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

How workshops diagnose 0445117027 faults

Compare injector balance / correction values across all six cylinders — an outlier identifies the failing unit. On group supply-voltage codes, check the injector harness and connectors before replacing hardware. Check return flow to identify a hydraulically defective injector. Injector coding is required after fitting — follow the manufacturer procedure. Never condemn a common-rail injector on a fault code alone.

How every unit is tested before despatch

Each remanufactured 0445117027 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.

Vehicle coverage at a glance

The 0445117027 trusted family covers 4 verified vehicle fitments across 3 makes: Audi, Porsche and Volkswagen. Every fitment listed is registry-verified.

OE & cross-references

0445117027 cross-references 6 further OE numbers, including 0445117026, 0445117075, 0986435453, 95811012841, 059130277CH and 059130277EK. Always match the reference etched on your failed unit's body.

Related fault codes & engine guides

Remanufactured diesel fuel injectors on a UK testing bench
UK's Leading Diesel Injector Specialists

Find the Exact Fuel Injector
by Vehicle Registration

UK diesel injector specialists supplying OEM tested and calibrated remanufactured injectors. Trusted by garages and mechanics nationwide with 12-month warranty on every part.