Seller notes

LS1 Chevy exhaust manifold flange plates, Plates are made from premium steel to ensure durability and maximum support, Intended for headers that have round ports, Inside diameter 1.69", hold diameter 1.625", flange thickness .375", Sold as a pair LS1 Chevy Header Flange Plates, Round Port, 1-5/8 Inch Sku # 41811017 Mfr. Part # 41811017 Condition New Brand Speedway Motors Sold Pair Details Info LS1 Chevy exhaust manifold flange plates for headers have round ports and are CNC cut from 5/16" thick ...

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