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REMANUFACTURED INJECTORDiesel Fuel Injectors
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12-Month Warranty
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B47 Injector Problems – Symptoms, Causes & Fixes

Engine: B47 1 compatible injectors From £100

Common Injector Failures on the B47

The B47 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 1 tested replacement injectors for this engine from Bosch.

Vehicles fitted with the B47 include models from BMW, Mini. 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 B47 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

B47 Injector Replacement Cost

Parts (per injector)

£100–£100

Labour

£150–£400

Total (per injector)

£250–£500

Full replacement cost guide

Compatible Injectors for the B471 found

0445110613Bosch
£100.00

Most Common Injector Part Numbers for B47 Engine

0445110613Bosch
£100.001 vehicle

Related Cross Reference Numbers for B47

0445110613098643526813538514147

Vehicles Using the B47 Engine

BMW 1 SeriesB47
BMW 2 SeriesB47
BMW 3 SeriesB47
BMW 4 SeriesB47
BMW X1B47
BMW X2B47

Frequently Asked Questions

What are common injector problems on the B47 engine?
The B47 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 B47 engine?
A remanufactured injector for the B47 engine typically costs £100–£100 per injector. Labour adds £150–£400 depending on accessibility. We found 1 compatible injectors for this engine.
Which vehicles use the B47 engine?
The B47 engine is found in vehicles from BMW, Mini. Common models include BMW 1 Series, BMW 2 Series, BMW 3 Series, BMW 4 Series, BMW X1.
How do I test the injectors on a B47 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 B47 Injector?

We stock 1 tested replacement injectors for the B47 engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All InjectorsReplacement Cost Guide Call 020 3355 6581