Michigan Motorsports Integrated Valve Spring Seat and Seal for Dual Valve Springs - Set of 16 Fits Texas Speed and Brian Tooley Dual Valve Springs You no longer need special tools to install your valve seals, only to worry if you are going to split one upon installation. Our new integrated seat and seal will literally push over the valve guide. The seat will push against the bottom of the cylinder head, so there is ZERO chance of tearing a valve seal on installation. Valve seats/seals are held in place by the spring. Our new integrated seat and seal is designed for the factory valve guide size and WILL NOT work with aftermarket bronze valve guides. *Listing is for a full set of 16, required for a complete set