Hedman Exhaust Gaskets BB Chev Square Port Set#HED27550 BRA2151 These straight through style mufflers

These straight through style mufflers feature a 409S stainless steel case and the quality you would expect from Flowmaster

24 TPI The depth of cut is self-limiting making thread restoration quick and simple

Body Height : 4"

Height (mm) 65

Typical capacitance - 430pF

Hedman Exhaust Gaskets BB Chev Square Port Set#HED27550 BRA2151 These straight through style mufflersHEDMAN HEADER FLANGE Gaskets for CHEVY 396 454 and ZZ502 Specifications : Product Type: Header and Exhaust Manifold Gaskets Product Line: Hedman Header Gaskets Port Style: Square port Gasket Material: Compressed fiber laminate Quantity: Sold as a Set Notes: For use with 1. 750" and 2. 000" header tubes.