The SHG dipstick retainer set for K Series RPC manifolds is effective in keeping the dipstick sealed in extreme conditions such as heavy track use, or in forced induction vehicles that see higher crank case pressures. The loop features stainless steel construction and bolts to the existing threaded M6 hole in the manifold. It requires a 1/8" hole to be drilled in the dipstick and includes a stainless steel spring and cap screw.