1988-98 GM C/K1500 OBS Pressurized Coolant Surge Tank 4l80 made to replace those flimsy

made to replace those flimsy plastic factory parts

1" sight glass and mounting feet are optional

coolant level sight glass

Direct replacement for the factory plastic glove box hinge that always breaks

Vented cap and machined 1/4" NPT fitting on the bottom

1988-98 GM C/K1500 OBS Pressurized Coolant Surge Tank 4l80 made to replace those flimsyPressurized coolant surge tank specifically intended for LS LT swap C K1500 OBS trucks and SUVs using a stock style sealed coolant system. This tank has a Pressurized cap, coolant level sight glass, and 1 2" NPT welded fitting on bottom to be plumbed inline with the heater core similar to 99+ Silverados. Bolts directly in place of the stock plastic over flow tank on the firewall with no modifications with stock inner fenders. This tank works similarly