4 SPEED MANUAL TRANSMISSION 4 309 SHAFT Transmission Shifter Shaft 91 P3 42 M TRNS M20 15592254 1 32 00 SHAFT REV SHFT PG4 7 14 91 P3 42 M TRNS M20 15592255 1 22 70 SHAFT 1ST 2ND SHFT 04 302 PG4 7 I 19 91 P3 42 M TRNS M20 15592256 1 25 00 SHAFT 3RD 4TH SHFT PG4 7 18 4 311 PLUNGER Transmission Shift Shaft Detent 91 P3 42 M TRNS M20 3864968 1 2 80 PLUNGER REV SHFT FORK PG4 7 10 4 317 EXTENSION Transmission Case 91 P3 42 M TRNS M20 15521967 1 75 50 EXTENSION TRANS PG4 3 58 4 318 GASKET SEAL Transmission Rear Main Bearing I 91 P3 42 M TRNS M20 8672160 1 3 45 GASKET RR BRG CAP PG4 3 56 91 P3 42 8672187 1 3 95 GASKET TRANS CVR 04 109 PG4 7 5 91 P3 42 M TRNS M20 15595878 1 4 15 SEAL MAINSHAFT TRANS UJT FRT FLG O L 05 560 PG4 3 59 Q 4 329 CONNECTOR Speedometer Driven Gear 91 P3 42 M TRNS M20 12102628 1 55 00 CONNECTOR DIGITAL RATIO ADAP 4 343 WHEEL Speedometer Drive NOTE FOR SPEEDO GEAR USAGE APPLICATION SEE CHART IN GROUP 4 450 91 P3 42 M TRNS M20 23046538 1 9 70 WHEEL VEH SPD SEN RELUCTOR 04 329 PG4 3 57 4 351 GEAR Transmission Main Drive C utch V 91 P3 42 M TRNS M20 8672408 1 212 00 GEAR TRANS CLU 17 TEETH WHEN USED ON 89 AND PRIOR ALSO USE I 8672405 BRG PG4 3 45 4 352 BEARING Mainshaft Front Pilot and Main Drive Gear 93 P 4 M TRNS MZU 457067 14 45 BEARING DR GR PKT 4 354 SEAL Transmission Main Drive Gear Bearing CIutch 91 P3 42 M TRNS M20 3987937 1 4 45 SEAL INPUT SHF PG4 3 34 4 355 BEAR ING Transmission Main Drive Gear C utch 91 P3 42 M TRNS M20 1ST DES 8672061 1 70 50 BEARING W SL NGER MAIN DR GR 1ST DES USED ON 1990 TRANS W JULIAN DATES 219 TO 225 2ND DES USED ON I 1990 TRANS W ANY JULIAN DATE EXC 219 THRU 225 PG4 3 43 4 356 BOLT Transmission Main Drive Gear Bearing CIutch A 91 P3 42 M TRNS M20 3920784 4 45 BOLT INPUT SHF BRG RET PG4 3 35 4 358 GASKET Transmission Main Drive Gear Bearing Retainer 91 P3 42 M TRNS M20 12337932 1 95 GASKET INPUT SHF BRG RET PG4 3 33 4 374 SLINGER Transmission Main Drive Gear Bearing 91 P3 M TRNS M20 1ST DES 3901177 1 86 SLINGER INPUT SHF BRG OIL USED ON TRANS W JULIAN DATE 219 225 SLINGER NOT USED ON SECOND DES PG4 3 44 4 383 CONE RING Transmission Synchronizer 91 P3 42 M TRNS M20 3993036 2 N L CONE 3RD 4TH GR SYN PG4 3 3 91 P3 42 M TRNS M20 3950367 1 N L RING 2ND GR BLOCKING PG4 3 13 4 384 HUB INSERT SLEEVE SPRING Transmission Synchronizer 91 P3 42 M TRNS M20 3946776 1 N L HUB 1ST 2ND GR SYN PG4 3 17 91 P3 42 M TRNS M20 3901164 1 N L HUB 3RD 4TH GR SYN PG4 3 8 91 P3 42 M TRNS M20 3866358 6 1 4O INSERT 1ST 2ND GR SYN PG4 3 6 91 P3 42 M TRNS M20 3866358 6 1 40 INSERT 3RD 4TH GR SYN PG4 3 6 91 P3 42 M TRNS M20 3901165 1 N L SLEEVE 3RD 4TH GR SYN CLUTCH 04 380 PG4 3 4 91 P3 42 M TRNS M20 3866646 2 66 SPRING 1ST REV GR SYN 04 413 PG4 3 16 91 P3 42 M TRNS M20 3866359 2 80 SPRING 3RD 4TH GR SYN PG4 3 7 4 395 GEAR Transmission Second Speed 91 P3 42 M TRNS M20 3901158 1 140 00 GEAR 2ND PG4 3 12 7 jj 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 53P 4 309 4 395 4 2 9 92