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NGK 97506 spark plugs are the OEM replacement used to service BMW N54 and N55 engines, delivering reliable ignition and consistent combustion. This plug runs two steps colder than stock for N54 and one step colder for N55, making it a direct-fit choice for tuned and high-boost applications.
Worn plugs can cause misfires, hesitation, a check engine light, loss of power, or poor fuel economy, so replacing them at the recommended interval keeps performance sharp. Installation requires a 14mm, 12-point spark plug socket and a tightening torque of 23 ± 3 Nm.
Key Features
| Brand | NGK |
| Model | 97506 |
| Product Type | Spark Plug |
| Tightening Torque | 23 ± 3 Nm |
| Socket Required | 14mm, 12 point spark plug socket |
| Heat Range | 2 step colder for N54, 1 step colder for N55 |
| Compatibility | BMW N54 and N55 engines |
Compatibility
Direct fit for BMW N54 and N55 engines, including 135i, 335i, 535i, 640i, 740i, X1, X3, X4, X5, X6, Z4, M2, M135i, M235i, and 1M models.
How to use
Install using a 14mm, 12-point spark plug socket and tighten to 23 ± 3 Nm. Replace at the recommended service interval or when misfiring, hesitation, or power loss occurs.
Frequently asked questions
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