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HKS 50003-M45iL M-Series Super Fire Racing Iridium Spark Plug

(Honda Civic 2005-10, Insight 2009-14; Toyota 4Runner 2005-09, RAV4 2006-12, Yaris 2005-10; Subaru Impreza 2009-14, Outback 2003-14 + 15 more models)

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

Other options in this family: HKS 50003-M45HL HKS 50003-M45XL HKS 50003-M50HL HKS 50003-M40XL HKS 50003-M40iL

Manufacturer

Picture for manufacturer HKS

Part Number

50003-M45iL
16 reviews
Sale Price

$270.00

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The HKS 50003-M45iL M-Series Super Fire Racing Spark Plug is a high-performance iridium plug engineered for improved ignition performance, enhanced durability, and superior resistance to carbon buildup under high-load conditions.

Key Features:

  • 0.6mm Iridium Alloy Center Electrode: Ultra-fine electrode design delivers focused spark energy for more efficient combustion
  • Platinum-Tipped Outer Electrode: Platinum chip on the ground electrode provides exceptional wear resistance and extended service life
  • Short-Type Outer Electrode: Anti-vibration design improves durability in high-RPM applications
  • Thermal Edge Technology: Optimized heat dissipation prevents pre-ignition and electrode fouling
  • Spark Support Gap: Enhanced gap design ensures consistent spark delivery across all operating conditions

The iridium alloy center electrode features an exceptional melting point of 2,454°C (compared to 1,769°C for conventional materials), allowing it to withstand extreme combustion pressures and high boost levels without deterioration. The nickel-coated housing protects against premature wear and corrosion. M-Series plugs are specifically recommended for turbocharged, supercharged, and high-compression engines requiring reliable ignition under demanding conditions.

Note: Spark plugs are sold individually. Verify heat range compatibility for your specific application.

Products specifications

Fits

Honda Civic 2005-10, Insight 2009-14; Toyota 4Runner 2005-09, RAV4 2006-12, Yaris 2005-10; Subaru Impreza 2009-14, Outback 2003-14, Forester 2004-07, 2010-12, Legacy 2003-14; Mitsubishi Lancer 2006; Infiniti G35 2003-07 + 11 more models

Heat Range

9

Autoplicity was an easy and simple transaction! It is appreciated when an online retailer is responsive to customer's needs. I contact Autopilicity over the phone on several occasions and was promptly greeted with a professional Customer Service representative that was immediately capable of answering my questions and concerns. Thank you Autopilicty and keep up the great work!

Great parts and cheap ..... Shipping was really fast....

service was great arrived quickly

great pricing and easy ordering online.

Fast and easy, found answer to design problem on 3.5 eco boost

No troubles. Smooth and competitive with other sites.

Fast order fulfillment and great price!

Timely correct service

Easy

Excellent price.

They have the best prices and fast shipping too.

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.

It was good

Very competitive low prices and great product selection. Will definitely look to this vendor when purchasing automotive parts in the future.

Great prices and FAST shipping!! Definitely will buy products here again!

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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