The Chamber Mold Kit is a precision engine-building tool designed to accurately create combustion chamber molds during engine assembly and tuning. It includes a two-part epoxy system and a spark plug hole plug to form exact chamber shapes and measure piston-to-valve clearance. Ideal for performance builds and head matching, this kit helps optimize combustion efficiency and prevent costly contact issues. Precision chamber mold kit for combustion chamber shaping and checking clearance Includes two-part epoxy and spark plug hole plug Helps optimize piston-to valve clearance and head matching Useful for performance engine building and tuning Easy-to-use, accurate solution from a trusted racing engine parts brand Specifications Chamber Mold Kit, 2 Part Epoxy, Spark Plug Hole Plug, Kit Brand: Diamond Racing Products Part Number: 03-2000 Package Weight: 1.43 lbs