Maintain factory ignition performance and reliability with the Genuine BMW OEM Spark Plug 12120022902, designed specifically for iconic BMW S50 and S54 naturally aspirated inline-six engines found in legendary M models including the E46 M3, Z3 M and Z4 M. Engineered to BMW’s exact factory specifications, this genuine OEM spark plug delivers the correct heat range, ignition characteristics and durability required for high-revving BMW M powerplants.
Whether carrying out routine servicing or preventative maintenance, genuine BMW spark plugs help ensure smooth engine operation, stable combustion and the sharp throttle response these iconic M engines are known for.
Key Features
- Genuine BMW OEM spark plug
- BMW part number: 12120022902
- Designed for BMW S50 & S54 engines
- Factory-correct heat range and electrode specification
- Supports smooth ignition performance and combustion efficiency
- Ideal for routine servicing and preventative maintenance
- Direct OEM replacement component
- Manufactured to BMW factory standards
Genuine BMW OEM Ignition Performance
BMW M engines are engineered with extremely precise ignition and fuel delivery systems. Using genuine BMW spark plugs helps maintain:
- Reliable cold starts
- Smooth idle quality
- Consistent power delivery
- Stable combustion at high RPM
- Sharp throttle response
Unlike lower-quality aftermarket alternatives, OEM BMW spark plugs are specifically calibrated for the thermal demands and operating characteristics of BMW M engines.
Designed for High-Revving BMW M Engines
The S50 and S54 engines are among the most celebrated naturally aspirated engines BMW M has ever produced, renowned for:
- Motorsport-inspired engineering
- High-revving performance characteristics
- Individual throttle bodies
- Precise engine response
Maintaining proper ignition performance is essential for preserving the smooth power delivery and responsiveness these engines are known for.
Ideal for Routine Maintenance
Spark plugs are a critical service item and should be replaced at recommended intervals to help prevent:
- Misfires
- Rough idle
- Reduced performance
- Poor fuel economy
- Ignition instability under load
This genuine BMW spark plug is ideal for both standard road cars and enthusiast-maintained M vehicles.
Direct OEM Replacement
This spark plug is supplied as a direct replacement for the original factory-installed component with no modification required.
Professional installation is recommended.
Compatibility
BMW E46 M3
- BMW E46 M3 Coupé
- BMW E46 M3 Convertible
- BMW E46 M3 CSL
BMW Z3 M
- BMW Z3 M Roadster (E36)
- BMW Z3 M Coupé (E36)
BMW Z4 M
- BMW Z4 M Roadster (E85)
- BMW Z4 M Coupé (E86)
Why Choose Genuine BMW Parts?
Genuine BMW OEM parts are engineered specifically for your vehicle, ensuring:
- Factory-correct fitment
- OEM-quality ignition performance
- Long-term durability
- Proper compatibility with BMW M engine systems
Why Buy from R44 Performance?
R44 Performance supplies genuine BMW OEM parts trusted by enthusiasts and specialists worldwide.
- BMW specialists
- Genuine OEM BMW components
- Fast UK & worldwide shipping
- Expert technical support
Maintain the performance and reliability of your BMW M engine with the Genuine BMW OEM Spark Plug 12120022902, engineered specifically for BMW S50 and S54-powered M models.
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.