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HKS 50003-M40 Iridium Spark Plugs

Manufacturer

HKS

<p><span id="docs-internal-guid-6a11a969-7fff-ea64-3a4b-92178eb936d4">Formed in 1973, and named after the founders Hasegawa, Kitagawa, and Sigma, HKS began tuning engines and cars with a c vision to tune and manufacture high performance engine components and turbo kits that surpasses OE Manufacturers. HKS is one of leading manufacturers of import performance parts. It offers a comprehensive line of superior quality Coilovers, Downpipes, Transmissions, drop-in Filters, Pistons, Superchargers, and more.</span></p>

Picture for manufacturer HKS 50003-M40 Iridium Spark Plugs

Part Number

50003-M40
14 reviews
04/26/2034 3:28 PM
Sale Price

$20.24

In Stock (10+)

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Usually delivered within 2 days

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Product Details

HKS 50003-M40 Iridium Spark Plugs

ALL PLUGS SOLD INDIVIDUALLY

HKS S-Series Super Fire Racing Spark Plugs

HKS S-Series Super Fire Racing Spark Plugs are high performance Iridium plugs designed to handle advanced levels of tuning and still offer easy start-up and smooth idling.

  • 0.4mm diameter Iridium plug electrode core
  • U-shaped grooved electrode
  • S-Series Super Fire Spark Plugs are recommended for smooth cold starting, response and acceleration.

M-Series Super Fire Spark Plugs

HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

  • 0.6mm Iridium Alloy Center Electrode
  • Outer Electrode with Platinum Chip
  • Short Type Outer Electrode (Anti-Vibration)
  • Thermal Edge
  • Spark Support Gap

*M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.

The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in colder heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.

Products specifications

Heat Range

8

Quick Site. Need better Pics of Parts

So far so good website was easy to manage cheka was a breeze we'll see how quickly they get order here.

Perfect Fit just what I needed received earlier than expected

I have a corporate credit card with separate billing/shipping address requirements. After my initial purchase I was then solicited to fill out an additional Credit Card form. very inconvenient.

Good experience, fast service

fast shipping , great price

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Ok

you have the best price I will be back for running boards

Very easy to order parts but since I did ground delivery I am unsure when to expect them.

Easy ordering, Great price.

Quick, easy and inexpensive!

Quick and easy. Price was great also

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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