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HKS 50003-M40G Iridium M-Series Super Fire Racing Spark Plug

(Honda Accord 1985-89, Prelude 1982-87; Volkswagen Jetta 1989-92; Mitsubishi Lancer 1992-2005, Eclipse 1990-99, Montero 1988-91, Starion 1988-90 + 6 more models)

Part of: HKS M-Series Super Fire Racing Iridium Spark Plug

Other options in this family: HKS 50003-M45iL HKS 50003-M45HL HKS 50003-M45XL HKS 50003-M50HL HKS 50003-M40XL

Manufacturer

Picture for manufacturer HKS

Part Number

50003-M40G
6 reviews
Sale Price

$270.00

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The HKS 50003-M40G is a high-performance M-Series Super Fire Racing spark plug featuring advanced iridium alloy construction for superior ignition performance, exceptional durability, and resistance to carbon buildup under demanding conditions.

Key Features:

  • 0.6mm iridium alloy center electrode for concentrated spark energy and improved combustion efficiency
  • Outer electrode with platinum chip for enhanced wear resistance and longevity
  • Short-type outer electrode design provides anti-vibration properties for stable performance
  • Thermal Edge technology optimizes heat dissipation and prevents pre-ignition
  • Spark Support Gap design ensures consistent, reliable ignition
  • High melting point of 2454°C withstands extreme compression and minor detonation
  • Nickel-coated housing prevents premature deterioration and corrosion

The M-Series is specifically engineered for reliable ignition, durability, and anti-carbon buildup under high load conditions, making it ideal for tuned engines and performance applications. The ultra-fine iridium alloy electrode maintains optimal spark characteristics throughout its extended service life, while the platinum-tipped ground electrode ensures maximum durability. Each spark plug is sold individually.

Products specifications

Fits

Honda Accord 1985-89, Prelude 1982-87; Volkswagen Jetta 1989-92; Mitsubishi Lancer 1992-2005, Eclipse 1990-99, Montero 1988-91, Starion 1988-90, Diamante 1993-97; Toyota Land Cruiser 1988-92, Celica 1983-86, Tercel 1987-90 + 2 more models

Heat Range

8

Found an item that has been unavailable every where I have looked.

They have the best prices and fast shipping too.

Awesome and quick

Great price and fast shipping!

Best price I could find! Great customer service kept me informed through the whole order process to insure acuracy since it was being sent directly from the manufacture. Recieved my order in good time, right parts and no damage. Overall very satisfied and will be doing business again in the future.

Although there was a mix up with the shipping on my order customer service was helpful and expedited the solution and made it worth my trouble. I will be keeping Autoplicity in mind for any other parts I might need for my Jeep.

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