SKU: 12128927476

HKS Super Fire Racing Spark Plug 50003-M40IL

$36.82 $40.91
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Description

HKS Super Fire Racing Spark Plug 50003-M40ILM 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 # 8
Thread Size: 14mm × 26.5mm
Wrench Size: 16mm

Fits:

2005 - 2005 BMW 325I ALL 2.5 ALL ALL From 10/2005 Production Date  ABA-VS25 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2005 - 2005 BMW 325I ALL 2.5 ALL ALL From 4/2005 Production Date  ABA-VB25 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2006 BMW 330I ALL 3.0 ALL ALL From 4/2005 Production Date  ABA-VB30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2006 BMW 330XI ALL 3.0 ALL ALL From 10/2005 Production Date  ABA-VD30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2010 - 2010 BMW 528I ALL 3.0 ALL ALL From 3/2010 Production Date  DBA-FR30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2007 BMW 530I ALL 3.0 ALL ALL From 6/2005 Thru 6/2007 Production Date  ABA-NE30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2007 BMW 530I ALL 3.0 ALL ALL From 6/2005 Thru 6/2007 Production Date  ABA-NL30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2007 - 2007 BMW 530XI ALL 3.0 ALL ALL From 6/2007 Thru 3/2010 Production Date  ABA-PV30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2008 BMW Z4 ALL 3.0 ALL ALL From 4/2006 Thru 5/2009 Production Date  ABA-BU30 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2008 BMW Z4 ALL 3.0 ALL ALL From 4/2006 Thru 5/2009 Production Date  ABA-DU30 Chassis  Coupe  Stock Plug/Heat Range: LONGLEACH:6
2005 - 2010 HONDA CIVIC L4 1.3 ELECTRIC/GAS LDA1 From 11/2005 Thru 12/2010 Production Date  FD3 Chassis  HYBRID  Stock Plug/Heat Range: LONGREACH:5
2009 - 2014 HONDA INSIGHT L4 1.3 ELECTRIC/GAS LDA3 From 2/2009 Thru 3/2014 Production Date  ZE2 Chassis  HYBRID  Stock Plug/Heat Range: LONGREACH:5
2003 - 2007 INFINITI G35 ALL 3.5 ALL VQ35DE From 1/2002 Thru 10/2006 Production Date  PV35 Chassis  Stock Plug/Heat Range: LONGREACH:5
2003 - 2007 INFINITI G35 ALL 3.5 ALL VQ35DE From 1/2003 Thru 10/2006 Production Date  CPV35 Chassis  Coupe  Stock Plug/Heat Range: LONGREACH:5
2015 - 2016 LEXUS NX200T L4 2.0 ALL 8AR-FTS From 7/2014 Production Date  AGZ10.15 Chassis  Stock Plug/Heat Range: LONGREACH:6
2007 - 2008 LEXUS RX350 ALL 3.5 ALL 2GRFE From 3/2005 Thru 11/2008 Production Date  GSU31W/GSU35W Chassis  Stock Plug/Heat Range: LONGREACH:6
2009 - 2015 LEXUS RX350 ALL 3.5 ALL 2GRFE From 1/2009 Production Date  GGL10W Chassis  Stock Plug/Heat Range: LONGREACH:6
2003 - 2005 MERCEDES-BENZ C230 ALL 1.8 ALL ALL From 6/2004 Thru 8/2005 Production Date  GH/DBA-203040 Chassis  Stock Plug/Heat Range: LONGLEACH:6
2003 - 2005 MERCEDES-BENZ C230 ALL 1.8 ALL ALL From 6/2004 Thru 8/2005 Production Date  GH/DBA-203040 Chassis  Wagon  Stock Plug/Heat Range: LONGLEACH:6
2006 - 2006 MITSUBISHI LANCER ALL 2.0 ALL 4G63 From 8/2006 Thru 9/2007 Production Date  CT9A Chassis  DOHC MIVEC  Stock Plug/Heat Range: LONGREACH:7
2006 - 2006 MITSUBISHI LANCER ALL 2.0 ALL 4G63 From 3/2005 Thru 7/2006 Production Date  CT9A Chassis  DOHC MIVEC  Stock Plug/Heat Range: LONGREACH:7
2003 - 2006 NISSAN 350Z ALL 3.5 ALL VQ35DE From 1/2002 Thru 12/2006 Production Date  Z33 Chassis  Stock Plug/Heat Range: LONGREACH:5
2003 - 2006 NISSAN 350Z ALL 3.5 ALL VQ35DE From 10/2003 Thru 12/2006 Production Date  HZ33 Chassis  Roadster  Stock Plug/Heat Range: LONGREACH:5
2003 - 2007 NISSAN MURANO ALL 3.5 ALL VQ35DE From 9/2004 Thru 8/2008 Production Date  PZ50/PNZ50 Chassis  Stock Plug/Heat Range: LONGREACH:5
2009 - 2014 SUBARU IMPREZA ALL 2.5 ALL EJ257 From 2/2009 Thru 7/2014 Production Date  GRF Chassis  Wagon  Stock Plug/Heat Range: LONGREACH:6
2010 - 2014 SUBARU IMPREZA H4 2.5 ALL EJ257 From 7/2010 Thru 7/2014 Production Date  GVF Chassis  Sedan  Stock Plug/Heat Range: LONGREACH:6
2003 - 2009 SUBARU LEGACY H6 3.0 ALL EZ30D From 9/2003 Thru 5/2009 Production Date  BLE Chassis  AVCS DOHC  Stock Plug/Heat Range: LONGREACH:6
2009 - 2014 SUBARU LEGACY H4 2.5 ALL EJ255 From 5/2009 Thru 6/2014 Production Date  BM9 Chassis  Stock Plug/Heat Range: LONGREACH:6
2003 - 2009 SUBARU OUTBACK H6 3.0 ALL EZ30D From 10/2003 Thru 5/2009 Production Date  BPE Chassis  AVCS DOHC  Stock Plug/Heat Range: LONGREACH:6
2008 - 2009 SUBARU OUTBACK H4 2.5 ALL EJ255 From 5/2008 Thru 4/2009 Production Date  BPH Chassis  Stock Plug/Heat Range: LONGREACH:6
2009 - 2014 SUBARU OUTBACK H6 3.6 ALL EZ36D From 5/2009 Thru 9/2014 Production Date  BRF Chassis  Stock Plug/Heat Range: LONGREACH:6
2005 - 2009 TOYOTA 4RUNNER ALL 4.0 ALL 1GRFE From 8/2005 Thru 7/2009 Production Date  GRN215W Chassis  Stock Plug/Heat Range: LONGREACH:6
2006 - 2012 TOYOTA RAV4 ALL 3.5 ALL 2GRFE From 8/2007 Production Date  GSA33W Chassis  Stock Plug/Heat Range: LONGREACH: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: 12128927476

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4.3 ★★★★★
Based on 317 reviews
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Nathaniel
Waukegan, US
★★★★★ 5
Stylish comfort you can wear all day!
Size: 6.5, Color: Chestnut
My wife has been been wearing the UGG Goldenstar Sandals for a few weeks now, and they’ve totally exceeded expectations. These sandals strike the perfect balance between comfort and style, and she’s gotten so many compliments on them! Pros: • Super Comfortable: The cushioned footbed feels like walking on clouds. Perfect for long days on your feet or casual outings. • Lightweight: Unlike some chunky sandals, these are surprisingly light but still feel supportive and well-made. • Adjustable Straps: The Velcro straps make it easy to get the perfect fit, and they’re great for swelling feet after a long day. • Versatile Style: They look great with everything—from jeans and shorts to casual dresses. • High-Quality Materials: Typical UGG quality—durable suede and solid construction. Cons: • Suede Requires Care: The upper is suede, so they’re not ideal for wet conditions and do need a bit of maintenance to keep looking fresh. • Pricey: They’re on the higher end cost-wise, but I’d say the comfort and quality justify the price. I’m really happy with these sandals. They’re a perfect mix of fashion and function, and I’d definitely buy them again in another color!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2025
W
Verified Purchase
WHoward
Lowell, US
★★★★★ 5
Best Sandal Ever
There is nothing about these that I don't LOVE. These are so comfortable and look so good. I have 6 pairs in every color. They r my absolute favorite. Run true to size. Listen to Amazon about sizing. They know... I am between size 7 and 7.5 and they recommended 7 and it was a perfect fit. I have not had any issues with the Velcro closure. Amazon has the best prices for UGGS.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
D
Verified Purchase
dawn
Massapequa, US
★★★★★ 5
Sandals that go with just about everything.
As a lover of everything Ugg, these didn't disappoint. They are some of the most comfortable shoes I have, very lightweight, and go with just about everything. They remind me of the old school Dr. Martens and I had a massive collection of those in high school. I have worn them quite a bit and you can barely tell as they are holding up extremely well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
S
Verified Purchase
Stephen love
Charlottesville, US
★★★★★ 5
Comfort
Love! Excellent quality and sooooo comfy! Love
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
K
Verified Purchase
KaDi
Massapequa, US
★★★★★ 4
Cute and comfortable!
Size: 6.5, Color: Chestnut
These are cute and surprisingly comfortable! My arches feel supported and the soles don’t feel as block-like as other platform style sandals! Things to note: The footbed liner is not made of suede and is a little slippery. It’s like a neoprene liner which was unexpected for an Ugg shoe. Also, I only intend to wear these sandals as slides (a la Birkenstocks) so the “adjustable” Velcro strap over the top part of the foot seems useless. It doesn’t snug the top down at all, functionally speaking it is only to wear around the back of the ankle. Maybe this matters to someone thinking they could tighten the top down a bit. The ankle strap is comfortable but could be a bit longer. Overall they are a cute option to the platform Birks that are very uncomfortable imo. Love the options to order half sizes. I’m usually a 6 in Ugg boots but ordered my regular shoe size 6.5 and they fit well. My heel would be at the very end of my sandal if I sized down. True to size. Keeping and will order in another color!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2025

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