PPE Engine Coolant Thermostat Housing 01-07 GM 6.6L LB7 LLY LBZ Duramax BR-176000OR Remove your big ugly resonator

Remove your big ugly resonator box under your hood and block it off with the PPE resonator delete plug

but care will need to be taken with regard to the parking brake cable and fuel line routing

and filter

all through a simple dash mounted three position switch

maximizing ground clearance

PPE Engine Coolant Thermostat Housing 01-07 GM 6.6L LB7 LLY LBZ Duramax BR-176000OR Remove your big ugly resonatorCorrosion is often seen on this stock part as they age out. This can lead to blockage and reduced cooling capability. Replace your corroded OEM thermostat housing bridge with the PPE high strength, cast aluminum Thermostat Housing. This high quality upgrade is a direct replacement on to the OEM cylinder heads and is compatible with the factory thermostats, temperature sensor, and the stock thermostat housing.