Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
HKS Super Fire Racing Spark Plug 50003-M40M 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 × 19mm
Wrench Size: 16mm
Fits:
| ACURA | INTEGRA | ALL | 1.8 | B18A1 | 1991 - 1993 | DB1 Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 10/1991 Thru 4/1993 Production Date |
| ACURA | LEGEND | V6 | 2.5 | C25A1 | 1985 - 1987 | KA2 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1985 Thru 2/1987 Production Date | |
| ACURA | LEGEND | V6 | 2.7 | C27A1 | 1987 - 1990 | KA3/KA6 Chassis | Stock Plug/Heat Range: JIS:6 | From 2/1987 Thru 9/1990 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B2 | 1987 - 1989 | EF2/EF4 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1987 Thru 9/1989 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B2 | 1989 - 1991 | EF2/EF4 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1989 Thru 8/1991 Production Date | |
| HONDA | CIVIC | L4 | 1.5 | D15B7 | 1992 - 1996 | EY4 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1992 Thru 2/1996 Production Date | |
| HONDA | CRX | L4 | 1.5 | D15B2 | 1987 - 1989 | EF6 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1987 Thru 9/1989 Production Date | |
| HONDA | CRX | L4 | 1.5 | D15B2 | 1989 - 1991 | EF6 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1989 Thru 2/1992 Production Date | |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1985 - 1991 | BA1/BA4/BA5 Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 10/1985 Thru 9/1991 Production Date |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1987 - 1991 | BA4/BA5 Chassis | Stock Plug/Heat Range: JIS:5 | From 4/1987 Thru 9/1991 Production Date | |
| HONDA | PRELUDE | L4 | 2.0 | B20A5 | 1989 - 1991 | BA5 Chassis | DOHC TCS | Stock Plug/Heat Range: JIS:6 | From 11/1989 Thru 9/1991 Production Date |
| LEXUS | ES300 | ALL | 3.0 | 3VZFE | 1992 - 1996 | VCV10 Chassis | Stock Plug/Heat Range: JIS:6 | From 10/1991 Thru 8/1996 Production Date | |
| MAZDA | 626 | L4 | 2.0 | ALL | 1987 - 1989 | GDER/GDEA/GDEP/GDEB/GDES Chassis | DOHC | Stock Plug/Heat Range: JIS:6 | From 5/1987 Thru 5/1989 Production Date |
| NISSAN | 180SX | ALL | 1.8 | CA18DET | 1989 - 1991 | RS13/KRS13 Chassis | Stock Plug/Heat Range: JIS:6 | From 4/1989 Thru 1/1991 Production Date | |
| NISSAN | 300ZX | V6 | 3.0 | VG30T | 1984 - 1989 | HZ31/HGZ31 Chassis | Stock Plug/Heat Range: JIS:6 | From 9/1983 Thru 6/1989 Production Date | |
| NISSAN | PULSAR NX | ALL | 1.6 | CA16DE | 1987 - 1987 | EB12 Chassis | Stock Plug/Heat Range: JIS:6 | From 8/1986 Thru 1/1990 Production Date | |
| NISSAN | SKYLINE | ALL | 2.0 | RB20DE | 1989 - 1991 | HR32/HCR32/HNR32 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1989 Thru 8/1991 Production Date | |
| NISSAN | SKYLINE | ALL | 2.0 | RB20DET | 1989 - 1991 | HCR32/HNR32 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1989 Thru 8/1991 Production Date | |
| NISSAN | SKYLINE | ALL | 2.5 | RB25DE | 1991 - 1993 | ECR32/ER32 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1991 Thru 8/1993 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1989 - 1994 | BNR32 Chassis | Stock Plug/Heat Range: JIS:6 | From 8/1989 Thru 1/1995 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1995 - 1998 | BCNR33 Chassis | Stock Plug/Heat Range: JIS:6 | From 1/1995 Thru 1/1999 Production Date | |
| NISSAN | SKYLINE | ALL | 2.6 | RB26DETT | 1999 - 2002 | BNR34 Chassis | Stock Plug/Heat Range: JIS:6 | From 1/1999 Thru 8/2002 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SFE | 1987 - 1989 | ST162 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1987 Thru 8/1989 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SGELC | 1987 - 1989 | ST162 Chassis | Stock Plug/Heat Range: JIS:5 | From 8/1985 Thru 8/1989 Production Date | |
| TOYOTA | CELICA | ALL | 2.0 | 3SGTE | 1988 - 1989 | ST165 Chassis | Stock Plug/Heat Range: JIS:5 | From 10/1986 Thru 8/1989 Production Date | |
| TOYOTA | COROLLA | ALL | 1.6 | 4AFE | 1988 - 1992 | AE95 Chassis | Stock Plug/Heat Range: JIS:5 | From 5/1988 Thru 5/1992 Production Date | |
| TOYOTA | COROLLA | ALL | 1.6 | ALL | 1985 - 1987 | AE86 Chassis | Stock Plug/Heat Range: JIS:5 | From 6/1983 Thru 5/1987 Production Date | |
| TOYOTA |
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
4.3 ★★★★★
Based on 2152 reviews
Sort
Product Reviews
★★★★★ 5
Aggressive chewer who loves fetch approved!!
Size: Medium, Size: Medium
I highly recommend the Chuck-It brand in general, especially for dogs with an aggressive bite. These balls are awesome and are the most durable balls I’ve bought for my 50 lbs lab mix. He has not been able to break one of them yet and we’ve had a few of the squeaky balls for months. They are a bit pricey but worth it.
The one in the pic has been used for months, lives outside and you can see it’s still in great shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2025
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
★★★★★ 5
Colorful, Sturdy & Great Value
Color: Large Set of 4
Purchased for our two puppies when they were 2 months old and weighed about 14 pounds so theses balls were a little big for them to hold in their mouths but that didn't stop them from trying. While they did like these balls they much preferred softer soccer balls, the later of which did not hold up well at all. I had hoped they would play with these balls more when they were older but that hasn't happened 5 months later. I guess it's no fun if you can't tear the toy apart. Colors are very bright and they do enjoy chasing after them as long as I am the one rolling them across the room for them. Maybe when they progress to batting things with their paws they will start to do this for themselves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2025
★★★★★ 5
My pup loves them
Color: Large Set of 4
Colors are bright and my dog loves the squeaky! Good size no worries of choking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2025