HKS SUPER FIRE RACING SPARK PLUG M40 (hks50003-M40)
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The HKS SUPER FIRE RACING SPARK PLUG M40 is designed to keep your engine firing strongly. Each spark plug features an iridium alloy center electrode that minimizes voltage requirements while enhancing ignition performance and durability. The outer electrode is equipped with a platinum chip that also helps ignition performance, and has been shortened into an ideal anti-vibration shape for more longevity. The thermal edge of the ceramic insulator helps minimize carbon deposits that can build after long idles or other conditions. These spark plugs are better firestarters than Prodigy. At your next tune, discover the difference high-performance spark plugs can make for your vehicle.
- 0.6mm Iridium Alloy Center Electrode
- Outer Electrode with Platinum Chip
- Short Type Outer Electrode (Anti-Vibration)
- Thermal Edge
- Prevent Carbon Build Up
- Heat Range: 8
- Thread Size: 14mm x 19m
- Wrench Size: 16mm
In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on final sales, special orders, opened, installed, incomplete, or otherwise used products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.