Bmw B46 Spark Plugs
By the Editorial Staff
March 24, 2026
This part is listed by BMW as BMW part number 12122455258 or 12125A4EF60 (SILZKGR8E8S or 96206) and is described as OEM NGK Spark Plug for B46, B48, B58TU, and S58 engines. These are found in G42, G20 3-series, G22/G23 4-series, G87 M2, G80 M3, G82 M4, and G29 Z4 models. This NGK SILZKGR8E8S replaces previous NGK part number SILZKGR8C8S.
Spark Plug Replacement - BMW B46 Turbo 4-Cylinder Engine This repair procedure gives step by step instructions on installing new spark plugs in the BMW B46 turbocharged 4-cylinder engine. We recommend the spark plugs be replaced in the B46 engine every 60,000 to keep it running at peak performance. Spark Plug (Set of 4) - BMW B46 / B48 / B58 / MINI All / F54 / F55 / F56 / F57 / F60 installed these spark plugs with new ignition coils.
have heard nothing but good things about these spark plugs & let me just say worth every penny. URO was super quick to ship as well. Was this review helpful?
Specially designed thin wall narrow socket with internal magnet - crucial for spark plug removal on N54, N55, S55, S63, N20, B46/8, B58 engines, as well as select Gen 2 and Gen 3 MINI. Product Details Enhance your BMW's performance with this new replacement spark plug designed for the B58/46 engine. Recommended for replacement at 60,000-mile intervals or at 30,000 miles for tuned engines, these spark plugs ensure optimal engine efficiency and ignition reliability.
Benefits: Specifically designed for B58/46 engines in BMW vehicles Ensures optimal engine performance and. This part is listed by BMW as BMW part number 12120040551 (12 12 0 040 551) and is described as Genuine BMW Spark Plug for F22, F30, F32, G30, G12, F48 X1, X2, G01 X3, and G02 X4 (B46A, B48A, and B58A engines). This is a Genuine BMW Spark Plug with a two year warranty.
Hello DIY'ersToday I show you how to replace spark plugs on your bmw equipped with a b46 or b48 engine (same process for b58). This particular car is a 2021. NGK Laser Iridium High Ignitability spark plugs offer the best combination of performance and longevity.
Engineered specifically for OE applications, Laser Iridium High Ignitability spark plugs are tested to the highest standards to ensure quality and durability. These are compatible with the following BMW engines: B58 Gen 1 B46/B48 Gen 1. You will find NGK spark plugs in nearly every vehicle application, from high performance racing cars to glow plugs for heavy-duty diesel engines to street vehicles from the world's leading automotive manufacturers.
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