Remanufactured Bosch 0445117076 Audi/VW/Porsche 3.0 V6 TDI diesel injector with RemanufacturedInjector box

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Engine Code or Cross Reference

Bosch 0445117021 Diesel Injector

BOSCH

Part No: 0445117021

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The Bosch 0445117021 diesel injector is a remanufactured common-rail injector for 3.0L V6 TDI engines. 3.0L V6 TDI Remanufactured Common Rail Injector (Audi/VW/Porsche EA897).

£160inc. VAT

(per injector)

+ £20 refundable core deposit per injector — refunded when your old unit is returned within 30 days

All prices are shown in GBP (£). International customers are securely charged in GBP via Stripe.

Save 38% vs OEM price

Professionally remanufactured to OEM standards

Ordering a single injector is standard practice.

Need multiple injectors? Simply increase the quantity above.

Every order includes a 12-month workshop warranty, OEM bench-calibration before despatch.

Most 4-cylinder engines use 4 injectors — replace only what your diagnosis confirms.

In stockTested & calibrated12-month warranty

12-Month Warranty

Included on every remanufactured injector. UK-based support if you ever need it.

Tested Before Dispatch

Flow-tested and calibrated on OEM-grade rigs. Test report on file for every unit.

Free UK Delivery

Mainland tracked dispatch. Order before 2pm for same-working-day pick-up.

Trade buyers: VAT receipt included · Account terms on request · Trusted by UK garages & diesel specialists.

12 Compatible Engine Codes

Audi OEM Replacement

OEM Bench Tested

Why Buy From Us

OEM Bench Tested & Calibrated

12 Month Warranty

Free UK Delivery

UK Diesel Injector Specialists

Technical Support Available

Not sure this is the right injector? Call us on 020 3355 6581

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International Delivery — flat £50 per order

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Engine Intelligence

Audi / VW / Porsche 3.0 V6 TDI (EA897 Gen1 — A6, Q7, Touareg, Cayenne) CJGC

Common 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

Documented failure modes

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

Diagnostic guidance

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 for open circuits before replacing hardware
Check return flow to identify a hydraulically defective injector
Injector coding is required after fitting — follow the manufacturer procedure

Fault codes linked to this engine's injectors

P0087 P0201 P0202 P0203 P0204 P2146 P2149

Fitment note: EA897 3.0 TDI variants span many engine codes and two injector generations across Audi, VW and Porsche — always match the reference etched on the injector body, not just the engine code.

Browse every diesel engine we cover →

Why this injector?

Fits the CJGC engine code used in the Audi A6 and related diesel variants.
Bosch diesel injector — flow-tested and calibrated on common-rail equipment before despatch.
Commonly specified when investigating rough idle, injector knock, smoke or poor fuel economy on CJGC engines.
12-month warranty, free UK delivery and a £20 refundable core deposit per injector (refunded when your old unit is returned).

Gold VerifiedVerified technical data

Bosch 0445117021 3.0 V6 TDI (CLAB/CPNA/CMHA) Common Rail Piezo Injector (Audi A6/A7/A8/Q7, VW Touareg)

AI Technical Summary

Bosch CRI3 piezo common-rail injector for the Audi/VW 3.0 V6 TDI (engine codes CLAB/CPNA/CMHA) fitted to the Audi A4/A5/A6/A7/A8 and Q7, plus the VW Touareg. Audi/VW OE 059130277CD / 059130277EJ; related Bosch 0445117022. Each injector carries a 7-character IMA/ISA correction code that is written per cylinder (adaptation channels 071-076) on fitment. Failures are driven by poor fuel filtration, contamination and back-leakage wear. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Piezo stack / internal wear; Water-in-fuel corrosion; Nozzle coking.

Common Symptoms

Rough idle / vibrationhigh

A leaking injector unbalances cylinder fuelling on the 3.0 V6 TDI.

Hard startinghigh

Excess back-leakage drops cranking rail pressure.

Loss of power / limp modehigh

Out-of-range delivery or rail-pressure deviation cuts power.

Black smokemedium

Poor atomisation over-fuels the cylinder.

Engine management lightmedium

Cylinder-specific injector or fuel-metering codes.

Workshop & Fitting Notes

InstallationWrite the 7-character IMA/ISA correction code per cylinder (adaptation channels 071-076) with VAG ODIS/VCDS before road test.
InstallationRenew the combustion seal and clamp hardware; torque to spec.
MisdiagnosisRead live back-leakage data to find the weak cylinder before removal.
WarningFix contamination (filter/water/debris) first; the 3.0 V6 TDI is sensitive to fuel quality.
TestingBench-test on a piezo-capable CR tester across delivery and back-leakage points before refit.

Frequently Asked Questions

What is Bosch injector 0445117021?+

A Bosch CRI3 piezo common-rail diesel injector for the Audi/VW 3.0 V6 TDI engine. Audi/VW OE 059130277CD / 059130277EJ.

Which vehicles use 0445117021?+

Audi A4/A5/A6/A7/A8 and Q7, plus the VW Touareg, with the 3.0 V6 TDI (CLAB/CPNA/CMHA) engine.

Is it solenoid or piezo?+

It is a Bosch piezo (CRI3) common-rail injector.

Does 0445117021 need coding?+

Yes - write the 7-character IMA/ISA correction code per cylinder (adaptation channels 071-076) with VAG ODIS/VCDS.

What are the OE part numbers?+

Audi/VW 059130277CD and 059130277EJ reference Bosch 0445117021; the related number is 0445117022.

How is 0445117021 different from 0445117022?+

0445117022 is a related Bosch number in the same 3.0 V6 TDI family; always match the OE number and IMA code requirement for the exact variant.

What are the symptoms of failure?+

Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.

Why does my 3.0 TDI run rough?+

A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the weak cylinder.

What causes these injectors to fail?+

Poor fuel filtration, contamination and back-leakage wear - fix the cause first.

Does a remanufactured 0445117021 perform like new?+

A properly remanufactured injector is bench-tested and recalibrated to the Bosch plan, then IMA-coded on fitment.

Related Injectors

0445117022 059130277CD

Related Engines

CLABCPNA

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Remanufacturing Process

Injector fully dismantled

Internal components cleaned and inspected

Worn parts replaced

Reassembled and calibrated

Tested before dispatch

See how our injectors are rebuilt step-by-step in our 3D remanufacturing process video.

Vehicles Compatible With This Bosch Injector

Compatible with Audi, Volkswagen, Porsche engines including CJGC, CJGA, CJGD, CJMA, CKVD and 7 more.

Make	Model	Engine	Years
Audi	A6	3.0 V6 TDI (EA897)	2010–2018
Audi	Q7	3.0 V6 TDI (EA897)	2010–2015
Volkswagen	Touareg	3.0 V6 TDI (EA897)	2010–2018
Porsche	Cayenne	3.0 V6 TDI (EA897)	2010–2018

Vehicles Using This Injector

Audi A6 injector Audi Q7 injector Volkswagen Touareg injector Porsche Cayenne injector

Compatible Engines

The 0445117021 injector is compatible with the following engines:

CJGC–3.0L V6 TDI CJGA–3.0L V6 TDI CJGD–3.0L V6 TDI CJMA–3.0L V6 TDI CKVD–3.0L V6 TDI CLAA–3.0L V6 TDI CLAB–3.0L V6 TDI CLZB–3.0L V6 TDI CMHA–3.0L V6 TDI CPNA–3.0L V6 TDI CRCA–3.0L V6 TDI MCRCA–3.0L V6 TDI

Also known as

This injector is sold and listed under the references below. Tap any number to copy it — every reference refers to this same product.

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Compatible Vehicles

This injector fits the following vehicles. Always confirm exact fitment by engine code or registration before ordering.

Audi A6 3.0 TDI

Audi Q7 3.0 TDI

Porsche Cayenne 3.0 TDI

Volkswagen Touareg 3.0 V6 TDI

Product Description

The Bosch 0445117021 diesel injector is a remanufactured common-rail injector for 3.0L V6 TDI engines.

3.0L V6 TDI Remanufactured Common Rail Injector (Audi/VW/Porsche EA897).

Common engine code: CJGC.

Commonly replaced when investigating rough idle, injector knock, excess smoke or poor fuel economy.

Each injector is tested to OEM standards with a 12-month warranty and free UK delivery.

Workshop Information

Installation Notes

Professional injector coding may be required after installation
Use calibrated test equipment for verification
Check engine-specific torque values before installation

Recommended Injector Coding

No injector coding is required for the Bosch unit on most applications — follow the manufacturer fitting procedure.

Replacement Advice

Always renew the copper washers / seals and bleed the fuel system before first start. Replace only the injectors your diagnosis confirms and torque fasteners to the manufacturer's published values.

Professional Installation

We recommend installation by a suitably equipped diesel specialist using calibrated test equipment to verify the fuel system after fitting.

Common Symptoms of a Failed 0445117021 Injector

Hard starting Rough idle Excessive smoke Poor fuel economy Engine misfires Loss of power under load

If your vehicle shows these symptoms, replacing the diesel injector may restore engine performance. A leak-off test can confirm the diagnosis.

Testing & Warranty

All remanufactured injectors are tested using OEM-grade diagnostic equipment to ensure fuel pressure and spray pattern meet manufacturer specifications.