FUEL EXHAUST 50 60 65 3 609 COUPLING EXHAUST PIPE TO MANIFOLD 12 6627 Con t 1 723390 366 CE Exhaust Pipe to Muff W C w W Exhaust System Stainless Steel for use with Gasoline Eng Eff 1975 1 1 723390 350 CE Exhaust Pipe to Muff W Exhaust System Stainless Steel for use with Gasoline Eng Eff 1975 2 723389 366 CE Exhaust Pipe to Muff W AT475 LD Trans W Exhaust System Stainless Steel for use with Gasoline Eng W Cab Eff 1975 2 723389 427 CE ME Exhaust Pipe to Muff W Exhaust System Stainless Steel for use with Gasoline Eng Eff 1975 2 2 723389 350 366 427 TE Exh Pipe to Muffler W Exhaust System Stainless Steel for use with Gasoline Eng Eff 1975 3 609 ELBOW EXHAUST PIPE 12 6647 AR 5100145 4 53 Muffler Outlet Eff w 1976 2nd Design 3 609 EXTENSION EXHAUST PIPE 12 6651 2 2 3890383 350 To Manifold 1 3890383 350 366 SE Muffler Exh Pipe 1 3890383 350 366 SE TE C Over Pipe 3 609 EXTENSION TAIL PIPE ALSO SEE RPO No N 12 6653 1 1 1 2491055 DH478 Upper Tail Pipe W Single Vertical Tail Pipe 2 2435208 DH478 Upper Tail Pipe W Dual Vert Exhaust 1 656850 DH478 MuffIer Upper Tail Pipe 1973 74 2 2 3890383 350 Exh Pipe W Cab 1974 2 2 3890383 350 366 Exh C Over Pipe Std Eff 1976 1 3890383 350 366 Exh C Over Pipe W Cowl 1974 3 609 INSERT EXHAUST PIPE 12 6735 2 2 3878311 366 427 At Manif0Id Ef f 1977 Rep 3933227 1 3876311 366 CE EH 1975 1 3876311 366 SE LH Pipe Eff 1975 1 3876311 366 SE C Ovr Pipe Eff 1975 AR AR 3876311 366 427 TE RH LH Std EII 1975 2 3876311 366 427 CE ME Std 1974 2 3876311 366 CE To Manif0Id w AT475 Transmission Eff 1975 2 3876311 366 CE SE W Cowl 81 Cab 1973 74 1 3876311 366 CE SE LH W Cow 1973 74 1 3876311 366 CE SE C 0vr W Cow 1973 74 3 609 TUBE EXHAUST PIPE 12 6943 1 719236 3208 RH LH Exhaust FIexibIe Std Eff 1975 1 1 717231 4 53T F exib e Std Eff w 1978 3 609 PIPE EXHAUST ALSO SEE RPO No K L N 12 6780 1 3954011 250 CS W Cowl Cab Std 1st Design 1973 1 3954011 CS5100 5120 5140 5170 W Cowl Std 2nd Design 1973 1974 1 3954009 292 CS W Cowl Std 1st Design 1973 1 3954011 CS6100 6140 W Cowl Std 2nd Design 1973 1974 75 1 3954009 292 CS W Cab Std 1973 74 1975 76 77 78 1 3954009 292 SS Std 1973 74 1975 76 1 3954009 292 CS Std W C0w 1974 75 76 1 3954009 292 CS W Cab Std 1975 76 7 7 78 1 3978809 305C SM CM Std 1973 74 1 3965245 305C SM CM Exhaust C 0ver Std 1973 74 1 8868576 305C TM RH Std 1973 74 1 8868582 305C TM LH Std 1973 74 1 705651 305C SM CM W AT54O Transmission 1973 74 1 705650 305C SM CM C 0ver W AT540 Transmission 1973 74 1 2441538 305C TM LH Cr ss0ver 1973 1 2389967 305C TM RH Crossover 1973 1 2442064 305C TM Rear 1973 1 1 691825 350 LH W Cab Std W Air Brake 1973 1974 1 691825 350 SE Std 1973 1974 1 1 3941444 350 CE SE RH C 0ver W Cab C0wl W Air Brake Std 1973 1974 1 1 3949434 350 Cross0ver W o A I R 1973 1974 1 1 3941444 350 Cr ss0ver W A I R 1973 1974 1 1 791989 350 366 LH W Cowl Cab Std 1973 1974 1975 76 77 78 WAREHOUSlNG AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION 78TM 3 609 3 609 3 44 N S reference only Added this issue AR PART