Universal fit
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This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
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Description
HKS Super Fire Racing MR-Series Spark Plugs
Achieve ultimate performance and reliability with HKS Super Fire Racing MR-Series Spark Plugs, engineered for high-powered, turbocharged, and high-compression engines. Featuring a unique design that combines an ultra-thin iridium center electrode with a specialized platinum ground electrode, the MR-Series spark plugs deliver exceptional ignition performance and precise combustion control, even under extreme conditions.
Designed to support optimal throttle response, increased horsepower, and better fuel efficiency, the MR-Series plugs offer a high heat resistance that enhances durability and longevity. They are optimized for motorsport and high-performance applications, providing a more stable ignition and minimizing the risk of misfire at high RPMs. Whether you're on the track or pushing your engine to the limit on the street, the HKS Super Fire Racing MR-Series Spark Plugs provide consistent power and smooth, responsive performance, so you can experience the thrill of maximum output without compromise.
- SUPER FIRE RACING MR40XLB — D12 L=26.5mm — Bi-HEX 14 — NGK #8 — 50003-MR40XLB
- SUPER FIRE RACING MR45XLB — D12 L=26.5mm — Bi-HEX 14 — NGK #9 — 50003-MR45XLB
- SUPER FIRE RACING MR45HLZ — Protrusion type, Thread: φ12 L=26.5mm — 14mm — NGK #9 — 50003-MR45HLZ
- SUPER FIRE RACING MR40XLZ — Protrusion type, Thread: φ12 L=26.5mm — 16mm — NGK #8 — 50003-MR40XLZ
- SUPER FIRE RACING MR45XLZ — Protrusion type, Thread: φ12 L=26.5mm — 16mm — NGK #9 — 50003-MR45XLZ
Specifications
- Part Number
- 50003-MR45HLZ
- Brand
- HKS
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.