05-10 Chevrolet Cobalt/HHR Aluminum Exhaust Header Gasket Speedzone Performance LLC Safety Enhancement - Improved visibility

Safety Enhancement - Improved visibility to other drivers increases overall road safety

delivering a raw motorsport experience intended for enthusiasts seeking the most extreme exhaust note

Damping Levels 40-Level Height Adjustment Yes Spring Rate(Front) 14 kg/mm (784 lbs/inch) Spring Rate(Rear) 8 kg/mm (448 lbs/inch) Spring Length(Front) 180 mm Spring Length(Rear) 200 mm Front Top Mount Yes

This gasket handles the thermal cycling and pressure that comes with engine swaps

05-10 Chevrolet Cobalt/HHR Aluminum Exhaust Header Gasket Speedzone Performance LLC Safety Enhancement - Improved visibility05 10 Chevrolet Cobalt HHR Aluminum Exhaust Header Gasket Aluminum construction seals your header to manifold joint without warping or blowout. Engineered to handle repeated heat cycles on stock and modified engines. Direct fit for your platform's factory mounting points. Ships from FL Warehouse Aluminum Construction Direct from Warehouse Key Features Aluminum core material Resists thermal warping better than composite gaskets under sustained exhaust