HKS MR Series Super Fire Racing Spark Plug (MR40XLB Heat Range 8) - BMW B58, B48 and B38 Engine / Toyota Supra 2020+

Description

Features and Specifications:
- This spark plug is the M12 and Bi-HEX14 shape that is compatible with the GR Supra and BMW B series engine (B58, B48 and B38) vehicles.
- HKS is offering NGK heat range 8 equivalent spark plug, which is ideal for replacing genuine products
- Durability is ensured by alloying the central electrode with ruthenium.
- The center electrode diameter set at 0.6mm reduces the required voltage and improves ignition performance. (Stock: 0.8mm)
- Ground electrode with platinum alloy tip improves durability and ignitability. Shortened ground electrode length contributes to electrode strength and durability.
- The ground electrode contains a copper core to suppress temperature rise of the electrode and improve durability.