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Description
HKS Super Fire Racing Spark Plug 50003-M40XLM 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: 12mm × 26.5mm
Wrench Size: 16mm
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:
- 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
4.5 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Stylish, Reliable Grinders That Work Great Every Day
Color: Clear Glass, Size: 2pk
I purchased the Home EC stainless steel salt and pepper grinder set to replace an older mismatched pair, and these have been a solid upgrade for everyday kitchen use. They look clean and modern on the countertop and perform consistently whether I’m cooking or seasoning at the table.
The adjustable ceramic grinders make it easy to switch between fine and coarse settings, which is especially useful when cooking different types of meals.
✅ Pros
Solid stainless steel construction – feels sturdy and well made
Adjustable ceramic grinding mechanism – easy to fine‑tune grind size
Smooth, consistent grinding – no sticking or uneven output
Clear window to see contents – helps avoid running out unexpectedly
Comfortable to hold – good size and weight for regular use
❌ Cons
Manual grinding only – not ideal if you prefer electric grinders
Refilling requires removing the top – simple, but not spill‑proof
No labeling included – easy to mix up salt and pepper if you use similar grains
⚠️ Things to Consider Before Buying
Works best with dry sea salt and whole peppercorns
Ceramic grinders are durable but should not be washed in the dishwasher
If you cook in large quantities often, you may prefer a larger capacity grinder
👍 Reasons to Buy
Practical and attractive addition to any kitchen or dining table
Adjustable grind makes them versatile for cooking and finishing dishes
Durable enough for daily use without feeling bulky
Good value for a matching set, and you can often find a better price on Amazon compared to kitchen stores
✅ Final Thoughts
Overall, the Home EC Premium Stainless Steel Salt and Pepper Grinder Set offers a nice balance of style, durability, and functionality. If you’re looking for dependable manual grinders with adjustable settings for everyday use, this set is a great choice.
— Reviewed after regular home kitchen use
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Reviewed in the United States on February 1, 2026
★★★★★ 5
Well made and looks great
Color: Gold Top/Clear Glass, Size: 1pk
It’s beautiful, larger than I expected and super easy to use. I’m very happy with this purchase
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Practical and elegant grinder for daily use
Color: Silver single
I bought this manual salt and pepper grinder and in general I thought it was a very good option for the kitchen. The design is elegant and the glass body allows you to easily see when it is time to refill it. In addition, the stainless steel lid helps keep the spices fresh and prevents residues from falling on the table.
The ceramic blades grind both coarse salt and pepper well, and I liked that the thickness can be adjusted according to what you need, from a fine grind to a thicker one. It is also easy to recharge and clean.
After several uses it works properly and feels resistant for daily use.
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Hand size mighty grinder
Color: Silver single
Hi- I think this is a good grinder although to this point I ground about 2/3 of the glass chamber full of a good quality peppercorn. I like a coarse grind and this device gives that grind consistently. I like the cover and it's fit. The overall look is pleasing and think it's a good bang for the buck. It's easy to use and adjusts to your personal needs or wants. If your debating this device and am worried if you'll get years of use I know I don't force it but rather learn to allow the tool to do the work. I think it will last me for quite a while and even if I have to replace it once a year it's a well built unit that you can enjoy using. If you have arthritic hands and use this for hard products like fresh peppercorns or coarse Himalayan salt then treat yourself to a good rechargeable grinder (or better yet ask your children to get you one for all the great meals you make for them & have made for them !) Thanks for the read. I hope this helps. Greybeard
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Reviewed in the United States on May 6, 2026
★★★★★ 5
At Last! A Grinder That Can Grind Flaxseed!!!
Color: Silver single
I'm so excited -- my search for a manual flaxseed grinder is over! After spending countless hours -- nay, days & weeks! -- searching for a simple, manual spice grinder that worked well for flaxseeds, I found this little $7 gem! Just got it today & immediately tested it out... with GREAT results! At first I was disappointed to see that the grinding mechanism is plastic, but it sure did the job! It has a little dial to adjust the coarseness, which is nice. Also love that the container is glass; and larger than I thought. Easy to refill & I expect it'll be easy to clean. I think the ease of grinding will depend on how tightly or loosely you adjust the dial; at its tightest, I couldn't twist it at all, but loosening it allowed me to use it easily and it still gave me a fine grind. Highly recommend it... can't beat the value!
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Reviewed in the United States on November 15, 2025