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REMANUFACTURED INJECTORDiesel Fuel Injectors
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12-Month Warranty
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B37D15 Injector Problems – Symptoms, Causes & Fixes

Engine: B37D15 7 compatible injectors From £100

Common Injector Failures on the B37D15

The B37D15 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 7 tested replacement injectors for this engine from Bosch.

Vehicles fitted with the B37D15 include models from BMW, Bmw. 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 B37D15 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

B37D15 Injector Replacement Cost

Parts (per injector)

£100–£150

Labour

£150–£400

Total (per injector)

£250–£550

Full replacement cost guide

Compatible Injectors for the B37D157 found

07986734255
07986734255Bosch
£99.901826348325
1826348325Bosch
£149.903875
3875Bosch
£149.903898
3898Bosch
£149.903854
3854Bosch
£149.903862
3862Bosch
£149.903891
3891Bosch
£149.90

Most Common Injector Part Numbers for B37D15 Engine

07986734255
07986734255Bosch
£123.65118 vehicles
8989872366
8989872366Bosch
£224.2843 vehicles
47745629
47745629Bosch
£621.9027 vehicles
10092826252
10092826252Bosch
£227.9016 vehicles
11543216543
11543216543Bosch
£227.9012 vehicles
1826348325
1826348325Bosch
£149.904 vehicles
1343627616
1343627616Bosch
£159.903 vehicles
123486876
123486876Bosch
£244.902 vehicles

Related Cross Reference Numbers for B37D15

0445110819135378234611353782346213538579232B37C15A

Vehicles Using the B37D15 Engine

BMW 1 SERIESB37D15
Bmw 2 SERIESB37D15
BMW 2 SERIESB37D15

Related Engine Codes

120 216 B47C20 B47D20 B57D30 F40

Frequently Asked Questions

What are common injector problems on the B37D15 engine?
The B37D15 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 B37D15 engine?
A remanufactured injector for the B37D15 engine typically costs £100–£150 per injector. Labour adds £150–£400 depending on accessibility. We found 7 compatible injectors for this engine.
Which vehicles use the B37D15 engine?
The B37D15 engine is found in vehicles from BMW, Bmw. Common models include BMW 1 SERIES, BMW 2 SERIES, Bmw 2 SERIES.
How do I test the injectors on a B37D15 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 B37D15 Injector?

We stock 7 tested replacement injectors for the B37D15 engine. All remanufactured, bench-tested, and supplied with a 12-month warranty.

View All InjectorsReplacement Cost Guide Call 020 3355 6581