HKS Super Fire Racing M45HL Iridium Spark Plug (NGK 9) - Nissan/Infiniti VQ35HR - 10 Pack

The HKS Super Fire Racing M45HL is an HL-type iridium spark plug with an NGK 9 equivalent heat range (one step colder than stock), developed for the Nissan/Infiniti VQ35HR 3.5L engine. The M12 long-reach, 14 mm hex design matches the VQ35HR plug well, and the 0.6 mm iridium center electrode with platinum-chip outer electrode delivers strong, stable ignition for boosted or aggressively tuned setups while resisting carbon fouling. Sold as a 10-pack (wholesale case); a typical engine needs one plug per cylinder.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy