Genuine BMW B58TU & B48 OEM Spark Plug 12122455258

Ensure your BMW’s engine performs exactly as intended with the Genuine BMW OEM Spark Plug (Part Number: 12122455258) — the factory-specified replacement for models equipped with the B58TU and B48 engines. Engineered to BMW’s exacting standards, this high-performance spark plug guarantees optimal ignition, fuel efficiency, and long-term reliability.

Designed for modern BMW turbocharged petrol engines, the 12122455258 spark plug provides consistent combustion under extreme temperatures and pressures. Its fine-tipped electrode delivers precise spark timing and enhanced throttle response, maintaining smooth idle and powerful acceleration across the rev range.

Using only Genuine BMW ignition components ensures seamless compatibility with your vehicle’s advanced engine management systems, avoiding the risks of misfires or reduced performance often caused by aftermarket alternatives.

Key Features

• Genuine BMW part – 12122455258

• Designed for B58TU and B48 engines

• Provides consistent ignition and improved fuel efficiency

• Fine-tipped electrode for enhanced combustion stability

• Ensures smooth idle, strong performance, and reduced emissions

• Built to withstand high temperatures and turbocharged conditions

• Direct replacement – no modifications required

Compatibility

Compatible with a wide range of BMW models fitted with B58TU and B48 petrol engines, including:

• BMW 1 Series (F40, F70)

• BMW 2 Series (G42, F44, F45, F46, U06)

• BMW 3 Series (G20, G21, G28)

• BMW 4 Series (G22, G23, G26)

• BMW 5 Series (G30, G31, G60)

• BMW X1, X2, X3, X4, X5, X6 (B48/B58 variants)

• BMW Z4 (G29)

• Toyota Supra (A90, A91 – B58 engine)

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.