HKS Super Fire Racing Spark Plug 50003-M50RE
SKU: 49925089645

HKS Super Fire Racing Spark Plug 50003-M50RE

Sale price$70.93 Regular price$78.81
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

HKS Super Fire Racing Spark Plug 50003-M50REM 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 # 10
Thread Size: 14mm × 12.7mm
Wrench Size: 20.8mm

Fits:

1983 - 1985 MAZDA RX-7 ALL ALL From 10/1983 Thru 9/1985 Production Date  SA22C Chassis  Stock Plug/Heat Range: ROTARY:9
1985 - 1988 MAZDA RX-7 R2 1.3 From 10/1985 Thru 8/1988 Production Date  FC3S/FC3C Chassis  Stock Plug/Heat Range: ROTARY:10,11
1988 - 1991 MAZDA RX-7 R2 1.3 From 9/1988 Thru 12/1991 Production Date  FC3S/FC3C Chassis  Stock Plug/Heat Range: ROTARY:7,9
1993 - 1995 MAZDA RX-7 R2 1.3 From 12/1991 Thru 8/2002 Production Date  FD3S Chassis  Stock Plug/Heat Range: ROTARY:7,9
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: 49925089645

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 1163 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
GisliNM
New York, US
★★★★★ 4
Have used it for years
One of the the best on the market because it is a broad spectrum sunscreen protecting against both UVA and UVB rays. But as with all lotions it must be reapplied after several hours.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2013
K
Verified Purchase
Kim LP
Fort Morgan, US
★★★★★ 5
Lightweight sunscreen for face, 30 spf, everyday mix with foundation
Style: Face Lotion - SPF 30, Size: 1.7 Fl Oz (Pack of 1)
Great sunscreen and it is travel size! This suscreen is 30 spf, has a yellow tint, which works well as a facial sunscreen, while toning redness. It mixes well with three types of foundations. It is not sticky, absorbs well. Smells good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
J
Verified Purchase
Jadore
Pawtucket, US
★★★★★ 5
VERY GOOD, but not for me ┐('~`ˇ)┌
Style: Face Lotion - SPF 30, Size: 1.7 Fl Oz (Pack of 1)
PRODUCT [Hawaiian Tropic Weightless Hydration Lotion Sunscreen for Face SPF 30 1.7oz] PROs - Was delivered on time + well packaged + undamaged - Was a described/depicted per Amazons description (design and color is exactly as shown in the product picture) - Rubs/dissolves into face well - Felt slightly "weightless" - NO WHITE CAST - Felt moisturizing - GOOD price for the amount and value - VEGAN!! DID NOT BREAK OUT my picky, sensitive skin! CONs - Felt kinda "greasy" to me Overall, the product was GOOD, BUT JUST WASN'T FOR ME. The primary face moisturizer I use is oil based, and something that is a must for my skin (My skin loves my moisturizer). SO, having an oil based moister, and a GREASY sunscreen, is gonna be a no for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
C
Verified Purchase
Charlotte Kelman
Whiting, US
★★★★★ 5
Great Product
Style: Face Lotion - SPF 30, Size: 1.7 Fl Oz (Pack of 1)
Very smooth on the face. Smells great and works well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
R
Verified Purchase
Renee Wilson
Lexington, US
★★★★★ 5
Skincare!
Style: Face Lotion - SPF 30, Size: 1.7 Fl Oz (Pack of 1)
Soft in the skin. Keeps me from burning. I use everyday and under makeup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

recommand products