Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 BMW 328is AutomaticFACTORY OEM SERVICE PROCEDURE
Spark Plugs
SPARK PLUG TYPE
| Application | Spark Plug |
|---|---|
| M3 | Bosch FGR8KQC |
| V12 | Bosch B4419 |
| All Others (Except E39 M62 From 7/97) | Bosch F7LDCR, NGK BKR6EK |
| E39 M62 From 7/97 | Bosch F8LDCR |
SPARK PLUG SPECIFICATIONS
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|---|---|
| Standard Engine | Not Adjustable | 23 (31) |
| Motorsport Engine | Not Adjustable | 17 (23) |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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