Item Description Parts Maker HKS Parts Name Super Fire Racing Plug M40XL Parts Number 50003-M40XL x3 Type XL Type Screw Part Size φ12 x 26.5mm Wrench Size 16mm Heat Value No.8 Heat Range (NGK equivalent) The performance that HKS demands for spark plugs is reliable ignition that produces faster and more efficient combustion, and accurate ignitability that ensures stable engine performance over a long period of time in various environments.HKS Super Fire Racing is a plug that combines these elements and connects 100% of the original performance of a normal tuning engine. Dispatch / Payment / Other notes Dispatch All items will be shipped by Japan Post or DHL etc It can not be specified Payment All items can be paid via paypal. Other notes Please contact us in advance from the question column. We do not accept any complaints, cancellations, etc due to the delivery date conformity etc.