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REMANUFACTURED INJECTORDiesel Fuel Injectors
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CLAA Injector Problems – Symptoms, Causes & Fixes

Engine: CLAA 81 compatible injectors From £100

Common Injector Failures on the CLAA

The CLAA engine uses high-pressure common rail diesel injection. Over time, injector nozzles wear, seals degrade, and internal components lose calibration. This leads to a range of drivability symptoms that worsen if left unaddressed. We stock 81 tested replacement injectors for this engine from Bosch.

Vehicles fitted with the CLAA include models from AUDI, Audi. If you are experiencing any of the symptoms below, your injectors may need testing or replacement.

Symptoms of Injector Failure

Black Smoke
White Smoke
Rough Idle
Hard Starting
Engine Knock

Related Fault Codes

P0201P0202P0203P0204P0263P0266P0269P0087P0089P0300

How to Test CLAA Injectors

Leak-off test: Connect clear hoses to the injector return lines and compare fuel volumes at idle. The injector returning the most fuel is likely worn.

Correction values: Use a scan tool to read injector correction (IMA) values. Readings beyond ±3 mg/stroke indicate wear.

Resistance check: Measure resistance across the injector connector pins with a multimeter. Compare to manufacturer specs.

Complete Testing Guide Leak-Off Test Guide

CLAA Injector Replacement Cost

Parts (per injector)

£100–£150

Labour

£150–£400

Total (per injector)

£250–£550

Full replacement cost guide

Compatible Injectors for the CLAA81 found

2350
2350Bosch
£99.882299
2299Bosch
£99.882304
2304Bosch
£99.882502
2502Bosch
£99.882253
2253Bosch
£99.882509
2509Bosch
£99.882406
2406Bosch
£99.882513
2513Bosch
£99.882337
2337Bosch
£99.882348
2348Bosch
£99.882460
2460Bosch
£99.882384
2384Bosch
£99.88

Most Common Injector Part Numbers for CLAA Engine

0867673265
0867673265Bosch
£100.0016 vehicles
4539857938
4539857938Bosch
£160.0010 vehicles
043530632
043530632Bosch
£695.908 vehicles
0987654567
0987654567Bosch
£99.882 vehicles
2299
2299Bosch
£99.881 vehicle
2482
2482Bosch
£200.001 vehicle
1059
1059Bosch
£150.001 vehicle
2351
2351Bosch
£160.001 vehicle

Related Cross Reference Numbers for CLAA

038130073BA038130079F03G130073G03G130073GX0445115034044511505104451150520445115079

Vehicles Using the CLAA Engine

AUDI A6CLAA
Audi A6CLAA
AUDI A4CLAA
Audi A4CLAA

Related Engine Codes

1T1 1T2 2003 2004 8EC 8ED

Frequently Asked Questions

What are common injector problems on the CLAA engine?
The CLAA engine commonly suffers from injector seal failure, nozzle wear causing poor spray patterns, and back-leak issues. Symptoms include rough idle, black or white exhaust smoke, hard starting, and increased fuel consumption. These issues typically appear after 100,000–150,000 miles.
How much does it cost to replace injectors on a CLAA engine?
A remanufactured injector for the CLAA engine typically costs £100–£150 per injector. Labour adds £150–£400 depending on accessibility. We found 81 compatible injectors for this engine.
Which vehicles use the CLAA engine?
The CLAA engine is found in vehicles from AUDI, Audi. Common models include AUDI A4, AUDI A6, Audi A4, Audi A6.
How do I test the injectors on a CLAA engine?
Perform a leak-off test by connecting clear hoses to each injector return line and comparing fuel volumes at idle. You can also check injector correction values with a diagnostic scan tool or measure electrical resistance with a multimeter.

Injector Compatibility Checker

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Need a Replacement CLAA Injector?

We stock 81 tested replacement injectors for the CLAA engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All InjectorsReplacement Cost Guide Call 020 3355 6581