Description
We offer a full selection of HKS Super Fire Racing family of spark plugs optimized for race and tuning applications, featuring reinforced ignition capabilities, durability and anti-insulation. The thermal edge of the ceramic insulator discharges to help decrease carbon deposits under long idling.
Their iridium alloy center electrode reduces voltage requirements and improves ignition performance and durability.
Heat ranges are designed to withstand high temperatures and pressures under demanding race conditions.
HKS MLF-series spark plugs are type Conical Seat Long Reach with a specific M14 x 25 thread and 16 mm / 5/8″ wrench size.
They are designed especially for Mazda engines.
Based on HKS fitment guides and product listings, notable applications include:
- Mazda MZR engines: Commonly found in Mazda 3 (2.0L and 2.3L), Mazda 6 (2.3L and 2.5L) and Mazda CX-7 (2.3L MZR)
- Mazda MX-5 Miata (NC generation) (2.0L).
- Some Ford Focus and Mondeo models (in Europe) that share engine platforms with Mazda
They come in 2 heat ranges: 35 (NGK 7) and 40 (NGK 8).
The chart below illustrates the respective heat range indexes for Denso and NGK plugs.
Choose the best option from the drop down menu.
