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HKS M40 Super Fire Racing Spark Plugs - Modern Automotive Performance

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HKS

HKS M-Series Super Fire Racing Spark Plug

PART# HKS 50003-M40XL
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Email - sales@maperformance.com

Phone 1-888-627-3736



$ 26.97

Ships by , when ordered within hrs and mins

Sold as individual plugs - Please select quantity needed
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HKS M40XL Super Fire Racing Iridium+Platinum Spark Plug

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 Plug Features

  • 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.

Applications

  • Heat Range: NGK #8
  • Thread Size: 12 x 26.5mm
  • Wrench Size: 16mm 

What's in the box?

  • (1) HKS M40 Spark Plug

HKS M40XL Super Fire Racing Iridium+Platinum Spark Plug

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 Plug Features

  • 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.

Applications

  • Heat Range: NGK #8
  • Thread Size: 12 x 26.5mm
  • Wrench Size: 16mm 

What's in the box?

  • (1) HKS M40 Spark Plug

Customer Reviews

Based on 4 reviews
100%
(4)
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A
Anonymous
Great spark plugs

The plugs are hard to find, but worth it

M
Mickey
Awesome

Perfect for evo x!

E
Ernesto
Great plugs

Changed from the 1422 cold plug just to see if there would be a difference. Well initially you can hear and just feel the smoothness in the motor on idle and light acceleration. Feels even more smooth under hard acceleration. Would suggest for highly tuned motors with large turbo and upgraded fuel system.

Shipping was quick and individually packaged.

M
Mateusz Ploszkiewicz
Same or better than NGK

Nice spark plugs it's been 10k miles and they still looks like they came out of the box.

MAP Limited Lifetime Warranty

1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

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