Product Information:


**SOLD INDIVIDUALLY**

The fires and explosions in the engine of your performance vehicle, which send you speeding down the track, start with a spark. Drivers who custom tune their vehicles for higher performance need a plug that generates a strong spark without fail at the perfect time. 

The HKS M40 Super Fire Racing Spark Plugs are made to keep your engine firing strongly. Each plug features an iridium alloy center electrode that reduces voltage requirements while improving 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 decrease carbon deposits that can build after long idles or other conditions. 

These plugs are better firestarters than Prodigy. At your next tune, discover the difference high-performance spark plugs can make for your vehicle. Our staff of gearheads is on call to help you determine if these will work for your engine.

M-Series Super Fire Spark Plugs Feature:

  • 0.6mm Iridium Alloy Center Electrode
  • Iridium Alloy Center Electrode reduces voltage requirement as well as improving ignition performance and durability.
  • Outer Electrode with Platinum Chip
  • The Outer Electrode incorporates a square platinum chip which improves durability, and when combined with the iridium center electrode boosts ignition performance.
  • Short Type Outer Electrode (Anti-Vibration)
  • Discharges will occur in the Spark Support Gap (space between the tip of insulator and the base of the outer electrode) to help prevent carbon buildup.

Benefits

  • The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration.  This anti-vibration design improves longevity of the outer electrode.
  • Thermal Edge
  • After long idling or various combustion conditions carbon buildup can occur causing misfires. The Thermal Edge of the ceramic insulator will discharge to help decrease carbon deposits.
  • Spark Support Gap
  • M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.
Application:

Thread Size: φ12×26.5mm 

Wrench Size: 16mm

Shipping:

I may either ship through USPS or UPS at my own discretion.

Products are usually shipped out Monday – Saturday. Please contact me through email for assistance regarding other shipping methods.

Return policy:

When receiving your package, please open all of the boxes immediately to  check if all the contents are inside and not damaged. All damaged or defective items must be reported within 2 business days from the day the packaged is delivered. If the package appears to be damaged on the outside, please refuse to accept it from the carrier; or please make sure when signing the shipper's proof-of-delivery slip, you include a note stating that the package is or appears damaged. If you do accept a damaged shipment, please inform us immediately. Depending on the product and where/how it was shipped, it may be necessary for you to deal with the carrier. 

If the product received is defective, a replacement will be sent as soon as possible. If you decide to return the defective item, rather than replace it, a restocking fee will be assessed (15-20% depending on the item) and your original shipping and processing charges will not be refunded. Also, returned products must be in its original packaging which allows me to re-sell the product. I will refuse any damaged or products that are not in good condition. 

If after 30 days of receiving your product, it proves to be defective, we would like for you to deal with the manufacturer. They will inform you on how to proceed based on their policies. 

If you are unhappy in any way, please contact me through eBay messages. I will provide you instructions on how and where to return the product.SR

Terms and policy:

  • All of my products are 100% brand new unless otherwise stated in the description above.
  • All sales are final unless item is defective upon delivery. If for any reason the product has to be returned, a 15-20% restocking fee will be implemented.
  • As mentioned above, please inspect your order upon receipt.  No claims will be honored after 2 business days of delivery.
  • We will reimburse you the actual shipping fees for exchange if we shipped incorrect quantity, item, or defective item.
  • All items (except those exempted) are intended for off road use only, may never be used on public roads and highways