SKU: 75080294907

HKS Super Fire Racing Spark Plug 50003-M45XL

Sale price$34.78 Regular price$38.64
Save 10%

Pay in installments of $9.66 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

HKS Super Fire Racing Spark Plug 50003-M45XLM 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

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.

Heat Range: NGK # 9
Thread Size: 12mm × 26.5mm
Wrench Size: 14mm

Fits:

2014 - 2015 ACURA RLX ALL 3.5 ELECTRIC/GAS JNB1 From 1/2015 Production Date  KC2 Chassis  HYBRID  Stock Plug/Heat Range: M12 Long Reach Hex16:7
2008 - 2012 HONDA ACCORD L4 2.4 ALL K24Z2 From 12/2008 Production Date  CU2 Chassis  i-VTEC  Stock Plug/Heat Range: M12 Long Reach Hex16:7
2008 - 2008 MERCEDES-BENZ C300 ALL 3.0 ALL ALL From 6/2007 Production Date  DBA-204054 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX16:7
2007 - 2015 MINI COOPER ALL 1.6 ALL ALL From 2/2007 Production Date  ABA-MF16 Chassis  Stock Plug/Heat Range: M12 Long Reach HEX16:6
2008 - 2014 MINI COOPER ALL 1.6 ALL ALL From 10/2007 Production Date  Stock Plug/Heat Range: M12 Long Reach HEX16:6
2007 - 2015 MINI COOPER ALL 1.6 ALL ALL From 2/2007 Production Date  ABA-MF16S Chassis  Stock Plug/Heat Range: M12 Long Reach HEX16:7
2008 - 2014 MINI COOPER ALL 1.6 ALL ALL From 10/2007 Production Date  Stock Plug/Heat Range: M12 Long Reach HEX16:7
2008 - 2015 MITSUBISHI LANCER ALL 2.0 ALL 4B11 From 10/2007 Production Date  CZ4A Chassis  DOHC MIVEC  Stock Plug/Heat Range: M12 Long Reach HEX16:8
2007 - 2012 MITSUBISHI OUTLANDER ALL 3.0 ALL 6B31 From 9/2007 Thru 10/2012 Production Date  CW6W Chassis  Stock Plug/Heat Range: M12 Long Reach HEX16:7
2012 - 2012 MITSUBISHI OUTLANDER ALL 2.4 ALL 4B12 From 10/2012 Production Date  GF8W Chassis  Stock Plug/Heat Range: M12 Long Reach HEX16:6
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75080294907

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
R
Verified Purchase
Ruben
Battle Creek, US
★★★★★ 5
Great alternative to OEM model
Works great for my car. Really didn’t see a difference between these ones and the OEM ones. It provides good value with easy installation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
G
Verified Purchase
George
Lexington, US
★★★★★ 5
Good fit and price for a 2017 Honda Civic
Been using these in my Honda Civic for a while now they work great no complaints
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
Z
Verified Purchase
Zander
Whiting, US
★★★★★ 5
pretty good for price!
Great item with easy install, drops right in for a perfect fit! the quality is up there for its money, but certainly isn’t going to be your top of the line. however it gets the job done and has a prettt decent air flow for its price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 13, 2025
A
Verified Purchase
AB
Chelsea, US
★★★★★ 4
As expected
Fits perfectly and last long
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
B
Verified Purchase
Bob Jagielski
Natrona Heights, US
★★★★★ 5
Looks just like OEM
Fit great in 2018 Honda Civic. Easy to install and looked just like the OEM one (but much cleaner). Would recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2025

recommand products