| This listing is for the heater hose that connects the timing cover (engine) to the hookup on the firewall that is closest to the battery. Uses one per car. This is a preformed hose and fits your 77-78 z perfectly. For the 75-76 cars this hose will be about 2 inches short so you'll either have to stretch it (not adviseable) or install a short section on the front end with a coupler and hose clamps. We do sell couplers and hose clamps as well. The original preformed hose for the 75-76 cars is no longer available in the US. We're presently running a search with Japan to see if they have any left on the shelf and will update this information very soon. We carry most under hood and under dash hoses in stock. See listings Last update 05/11 | 
