Thermostat 140 degree Fits MerCruiser 60/80/110; 120 with aluminum exh. manifolds; 120 (s/n 2324346 and below) with cast iron exh. manifolds; 140/150/160 in-line 6 cyl. engines; GM V-6 & V-8 engines up to 1995 with 2 pc. thermostat housings; and Ford V-8 engines.