Dinan · New
Dinan 2025+ BMW Gen2 B48/Gen3 B58 Iridium Spark Plug - Heat Range 9 - 12mm x 26.5mm x 14mm - SINGLE
MPN D640-0003 · Store SKU dnnD640-0003
Supplier stock checked 11/7/2026, 5:03:58 PM UTC. Adding a part does not reserve it.
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Product details
Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines. Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark. The iridium electrode with its copper core is harder and stronger than other materials, can dissipate heat more easily, and is better protected from melting, cracking, and other limitations found with standard plugs. Dinan spark plugs are great for high boost, high cylinder pressure, high cylinder temperatures, and high-power situations, and they pair nicely with a set of Dinan ignition coils, where applicable. However, they are not only for tuned and higher output vehicles that may benefit from a plug cooler than the factory heat range – they also are applicable to non-tuned / stock vehicles as well! The D640-0003 spark plug applies to the following engines: B48 TU B58 TU1 (Gen 2 B48 Gen 3 B58) Dinan Iridium Spark Plug - 12x26.5x14MM (Flat) - Heat Range 12 (NGK 8) Compatible OEM Part #Cross Reference: 12125A523E0 B48 TU B58 TU1 (Gen 2 B48 Gen 3 B58)
Manufacturer fitment & guides
Check D640-0003 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
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