Supertech Ecotec Valve Guides - Set of 16 NONRET and coolant tank are the

and coolant tank are the 3 most replaced items in the system

2002-05 Pontiac Sunfire L4 2

Wideband Bung: All long tube header packages come with a bung for a wideband O2 sensor

SM-AFR - Wideband Air/Fuel Sensor Module

Any K-Type thermo couple is compatible

Supertech Ecotec Valve Guides - Set of 16 NONRET and coolant tank are theThis is a full set of replacement upgraded valve guides for your Ecotec engine. Supertech valve guides are manufactured from high quality manganese bronze for sport compact and domestic applications. Set of 16 guides. Enough to service one Ecotec cylinder head. Installation note: These guides are made to be reamed after installation. Measure the valve to guide clearance and ream the guides accordingly to provide the correct valve to guide clearance