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Max Comp spark plugs are designed to give you the best product. An unconditional 30 day warranty is given for personal use in the Automotive, Powersport and Small Engine category for the original engine they were installed.
Simply fill out the registration form when you receive your order or keep your receipt from the store where the Max Comp was purchased. If you do not see an increase in horsepower and milage, just send back the plugs and we will refund your purchase fee in full!
Max Comp will not warranty racing applications, commercial use or carbon fouled returns. Careful cleaning and re-gapping will increase the life of your Max Comp.
Max Comp spark plugs also offers a lifetime warranty against plug failure.
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