NGK RE7C-L iridium spark plug (Mazda RX-8, leading)
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NGK RE7C-L iridium spark plug for the Mazda RX-8, leading position. It is specifically designed for the 13B-MSP Renesis rotary engine, featuring a fine-wire iridium center electrode that provides a powerful spark and wears very slowly.
It maintains the stock heat range, making it the right choice for an RX-8 used for normal road driving or with light modifications.
Features
- Reference: RE7C-L (NGK 6700)
- Compatibility: Mazda RX-8 (13B-MSP Renesis), 2003 to 2012
- Position: leading
- Heat range: 7, the same as the original (the hotter of the two leading)
- Thread type: M14x1.25
- Thread length: 21 mm
- Wrench size: 20.8 mm
- Resistance: 5 kΩ
- Electrode gap: 1.1 mm
- Electrodes: 0.8 mm fine-wire iridium center electrode and platinum tip on the ground electrode
- Mazda part number: N3Z2-18-110A
- Sold: individually
- Brand: NGK
The RX-8's Renesis rotary engine uses four spark plugs: two for main ignition, the leading (RE7C-L or RE8C-L), and two for secondary ignition, the trailing (RE9B-T). They are not interchangeable, so check the position before purchasing.
It is recommended to change them at least every 30,000 km, or sooner if the car is used on a track. Worn spark plugs in a rotary engine are immediately noticeable through hot-start issues and apparent compression loss.
The RX-8 requires two of this position, so please indicate the corresponding quantity.