HKS 50003-MR40XLB Spark Plug SUPER FIRE RACING MR40XLB
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- 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.
- We are offering NGK heat range 8 equivalent spark plug, which is ideal for replacing genuine products, and NGK 9 equivalent spark plug, which provide a higher grade of peace of mind with tuned car.
- 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.
- 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.