4" (Length) x 2.5" (Width) x 2.5 (Height). They have a 1" Tube for 1-1/4" Valve Cover Holes.
These breathers are beautifully polished and have a very cool raised finned design. They also have a unique oval shape that will add a cool look to your valve cover. Additionally this includes a set of rubber valve cover gaskets with a steel core. These are for early model Small Block Chevy engines, and they will not work with center bolt valve covers. These are much stronger than standard cork gaskets and will provide a much tighter seal.The steel core ensures long life. These gaskets are so durable that they can be removed and used on another vehicle years down the road. This Kit would be a great addition to your Classic Small Block Chevy. One pair of polished aluminum valve covers(include Bolts and Baffles). Raised Finned Aluminum Breather/PCV Combo(include Rubber grommets).
Pair of Steel Core RUBBER Valve Cover Gaskets. Professional Installation is Highly Recommended.