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The HKS Super Fire Racing M40LF is designed for enthusiasts seeking optimal ignition performance in their high-performance vehicles. Crafted by HKS, a reputable brand in automotive tuning, this spark plug delivers reliable firepower, ensuring efficient combustion and improved engine response. Its construction features advanced materials that withstand extreme temperatures and pressures, making it suitable for racing and demanding driving conditions. The M40LF model's design promotes stable spark generation, contributing to smoother acceleration and enhanced fuel efficiency.
The HKS Super Fire Racing M40LF is engineered with precision to fit a wide range of performance applications. Its durable construction ensures longevity and consistent performance under intense engine loads. This spark plug is compatible with various high-performance engines, providing a significant upgrade over standard replacements. Whether you're tuning for track days or upgrading your daily driver, this spark plug helps maximize your vehicle's potential.
Designed for easy installation, the HKS M40LF spark plug features a standard fitment and high-quality threading that ensures secure placement. Its robust design minimizes the risk of misfire, supporting a cleaner burn and reducing emissions. The product's balanced approach to durability and performance makes it an essential component for automotive enthusiasts aiming to unlock their engine's full capabilities.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
