Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
HKS SUPER FIRE RACING M40i- Pack of 10 Spark PlugsExperience superior ignition performance with the HKS Super Fire Racing M40i spark plug, designed for enthusiasts who demand the best in automotive tuning. This spark plug enhances combustion efficiency and engine responsiveness, delivering reliable sparks even under extreme conditions. Crafted by HKS, a trusted name in high performance automotive parts, the Super Fire Racing M40i ensures optimal ignition timing and maximizes power output for your
Experience superior ignition performance with the HKS Super Fire Racing M40i spark plug, designed for enthusiasts who demand the best in automotive tuning. This spark plug enhances combustion efficiency and engine responsiveness, delivering reliable sparks even under extreme conditions.Crafted by HKS, a trusted name in high-performance automotive parts, the Super Fire Racing M40i ensures optimal ignition timing and maximizes power output for your engine. Whether you are upgrading a street car, building a hot rod, or tuning a motorsport machine, this spark plug is tailored to push your engine's limits.
Every unit is manufactured to precise specifications to guarantee durability and longevity. It minimizes misfires and improves throttle response, providing a noticeable boost in acceleration and overall performance. Installation is straightforward, making it a perfect upgrade for both professional workshops and passionate hobbyists.
Choose the HKS Super Fire Racing M40i spark plug to enhance your vehicle's ignition system and enjoy consistent, high-voltage sparks that keep your engine running smooth and powerful.
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
4.2 ★★★★★
Based on 1422 reviews
Sort
Product Reviews
★★★★★ 5
Better outcomes
Number of Items: 8
Enhances all my sublimation projects
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 4
Worth it
Number of Items: 5
It works
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Works as it should
Number of Items: 2
Works as it should. I do wish it was bit more sticky
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Heat tape
Number of Items: 5
Item was exactly as described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
A+
Number of Items: 6
Tape for sublimation
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026