Moroso Exhaust Port Blockoff - 1-Piece - Honda B-Series (Pair) Expansion Plug Kit Some long tube headers require

Some long tube headers require modification

MagnaFlow uses both Ceramic and Metallic substrates with different combinations of cell density and wall thickness to meet vehicle specific requirements

Includes Viton O-rings - Viton is a registered trademark of DuPont Performance Elastomers

powder coated or painted

Big O Dragster Scoop

Moroso Exhaust Port Blockoff - 1-Piece - Honda B-Series (Pair) Expansion Plug Kit Some long tube headers requireProduct Description: Exhaust Port Blockoff 1 Piece Aluminum Natural Honda B Series Pair Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 4000 products, from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard core racing tools, chassis and suspension equipment