Specifications
Spark and glow plugs
- Plug type
- Glow plug
- Thread size
- M10x1
- Spanner size
- 9mm
- Resistor
- — No
- Rated voltage
- 11V
- Glow plug type
- Metal (steel)
Technology
Numbers
OE numbers
Vehicle makers’ own part numbers this part replaces.
| Maker | OE number |
|---|---|
| BMW | 12 23 0 053 522 |
| BMW | 12 23 8 580 051 |
Why this one
01
M10x1 thread
11 V element, tightened to max 20 Nm.
02
Fast heat-up
Reaches glow temperature in under 2 seconds for quick cold starts.
03
Steel element
Robust metal sheathed element, as specified for these engines.
On the job
Cold starts and clean warm-up
Heats the combustion chamber for cold starts and keeps glowing after start-up to cut smoke and noise while the engine warms. This one has an M10x1 thread and a 11 V element and is tightened to a maximum of 20 Nm. Bosch lists it for the BMW 3 Series G20.
How to change them
Old glow plugs seize in the head, so soak them in penetrating oil, work them out with a torque wrench and stop if the torque climbs; a snapped plug means a drilling job. Replace the full set on the engine, and test the glow-plug control unit and wiring while you are there.
