NGK 94201 Laser Iridium OEM Spark Plug for BMW B58 & B48 Engines - Fits M140i M240i 340i 440i 540i 740i X3/X4 M40i, MINI Cooper S/JCW - Heat Range 8, Ideal for Stock & Tuned

NGK 94201 Iridium Plug for BMW B58 and B48 Platforms

Restore crisp ignition and eliminate hesitation with the NGK 94201 Laser Iridium. This genuine, direct-fit ignition plug delivers a strong, consistent spark under boost, smooth idle quality and clean acceleration on both standard and remapped cars. It is the dependable OE-grade option that thrives on daily use and hard driving.

• Trusted NGK quality for long service life and reliable combustion
• Iridium-tipped centre electrode for stable spark and excellent resistance to fouling
• Cold heat range 8 suited to performance builds and higher cylinder pressures
• Proven on ethanol blend setups, water-meth systems and upgraded turbo applications
• Ideal for Stage 1, Stage 2 and hybrid turbo configurations seeking dependable ignition

Why we rate it

We run NGK 94201 on our own B58 and B48 cars. Customers consistently report smoother running, fewer misfires and rock-solid performance at wide-open throttle. If you want OE reliability with performance headroom, this is the safe, no-drama upgrade.

Vehicle coverage

Designed for BMW B58 and widely used across BMW and MINI B48 applications, including:

• BMW M140i, M240i, 340i, 440i, 540i, 640i, 740i
• BMW X3 M40i, X4 M40i
• BMW 118i, 120i, 218i, 220i, 230i, 318i, 320i, 330i, 420i, 430i, 520i, 530i, 630i
• MINI Cooper S and John Cooper Works fitted with the B48 engine

Unsure about fitment for your chassis code or year. We offer a free compatibility check before dispatch.

Technical guidance

• Heat rating: 8 cold plug
• Recommended gap for tuned engines: set to 0.022 inch using a suitable gap tool
• Service interval guideline: many tuned vehicles refresh around every 20,000 miles
• Sold individually. B58 engines typically require six units

Professional fitting

Want it installed correctly first time. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Fitment verification

For peace of mind, we will confirm compatibility using your UK registration or the last 7 of your VIN after checkout.

Part number

NGK 94201

Search terms to find this product

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