Parts list: № Number Qty Name Options 1 37M7181 12 Screw 2 [] 1 (USE T121733 IF AVAILABLE) 3 T121703 2 Bushing 4 T77932 2 O-Ring 5 [] 1 (SUB FOR T121704)(USE T121733 IF AVAILABLE) 6 [] 1 (SUB AT125653) 7 AT132776 1 Thermostatic Control Valve (SUB FOR AT125653) 8 R78035 1 Push Nut 9 T121705 1 Lever Next page: ST291960 CAB HEATER HOSES AND CONTROLS (520352 - 548823) ST291964 Cab Heater With Pressurizer (40,000 BTU) (548824 - ) ST291958 Cab Heater (40,000 BTU) ( - 520351) ST291957 Cab Heater (20,000 BTU) (538883 - ) ST291966 ROOF HEATER COVER AND FILTER (548824 - )