You are looking at a NEW Chrome Holden V8 TWIN Pipe Thermostat Housing to suit; Holden 253 308 Engines Includes O-Ring seal + Fitting bolts This housing has a rubber O-Ring seal design, far better than the old gasket setup. We also have a range of 253 - 308 radiator hose and fan belt kits available. Thanks for looking and don't forget to check out all of our Restoration Essentials in our store. Your parcel will have a unique tracking number which will be sent to you via email on dispatch so you can keep an eye on your delivery.