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REMANUFACTURED INJECTORDiesel Fuel Injectors
OEM Tested
12-Month Warranty
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EXF Injector Problems – Symptoms, Causes & Fixes

Engine: EXF 3 compatible injectors From £70

Common Injector Failures on the EXF

The EXF 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 3 tested replacement injectors for this engine from Bosch, Siemens.

Vehicles fitted with the EXF include models from Jeep. 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 EXF 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

EXF Injector Replacement Cost

Parts (per injector)

£70–£120

Labour

£150–£400

Total (per injector)

£220–£520

Full replacement cost guide

Compatible Injectors for the EXF3 found

0445110059
0445110059Bosch
£70.00893264826
893264826Siemens
£120.00123427483
123427483Siemens
£120.00

Most Common Injector Part Numbers for EXF Engine

0445110658
0445110658Bosch
£207.906 vehicles
04451150456
04451150456Bosch
£227.905 vehicles
893264826
893264826Siemens
£120.003 vehicles
123427483
123427483Siemens
£120.002 vehicles
0445110059
0445110059Bosch
£70.001 vehicle

Related Cross Reference Numbers for EXF

044511005905066820AA0986435149F00VC01015

Vehicles Using the EXF Engine

Jeep CHEROKEEEXF

Related Engine Codes

ENC ENJ ENO ENR ENS VM39C

Frequently Asked Questions

What are common injector problems on the EXF engine?
The EXF 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 EXF engine?
A remanufactured injector for the EXF engine typically costs £70–£120 per injector. Labour adds £150–£400 depending on accessibility. We found 3 compatible injectors for this engine.
Which vehicles use the EXF engine?
The EXF engine is found in vehicles from Jeep. Common models include Jeep CHEROKEE.
How do I test the injectors on a EXF 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 EXF Injector?

We stock 3 tested replacement injectors for the EXF engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All InjectorsReplacement Cost Guide Call 020 3355 6581