Speedway Motors 5" Header Block Off Plate and Gaskets Kit

These nice thick Finned Aluminum Header Block-Off Caps are now available for triangular, round, and square header flanges. These come either as cast or with the edges and fin tips polished. They look great painted to match or compliment your engine or car color.

Our handy Header Cap Table gives you three different ways to measure your header flange. Prices are per pair.

• Round Header Cap
• Pair
• Raw/As-Cast
• 5" Outside Dimension
• Sanderson Bolt Hole Circle
• Fits Jayster Tubing

Replacement collector end-cap flange gaskets for Lake Style Headers with a 3-1/2" diameter cone. These reusable triple-layer gaskets are perfect for your Lake style header collectors.  They easily conform to surface irregularities to create a tight, leak-proof seal.  These header gaskets are stainless steel with a heat-resistant, rubber-based inner core.

• 3-1/2" collector flange
• Reusable triple-layer gasket
• Stainless steel with a heat-resistant, rubber-based inner core
• 0.085” thick, ultra pliable
• Available for many popular flange configurations
• Easily conforms to surface irregularities to create a tight, leak-proof seal
• Works well with a wide range of flange surfaces and block and head materials
• Sold as a pair