The Vintage Twin MagnaMatic Valve Keeper Tool by MAGNA is designed for both gas and diesel engines, making it a versatile addition to any automotive tool collection. With the manufacturer part number GA 318, this adapter ensures compatibility with various engine types. This product does not come with a warranty, but its quality and durability have been proven through years of use in the automotive industry. Ideal for mechanics and DIY enthusiasts looking for a reliable tool for maintaining and repairing engines.