I 6 CYLlNDER ENGINE I I 0 297 VALVE Exhaust I I M1 4 3N Z 14095451 6 N L VALVE EXH STD PGO 23 36 M1 4 3N Z 1409545 9 6 17 35 VALVE EXH O035 O S PGO 39 38 85 89 M1 4 3N Z 14095460 6 17 35 N LVE EXH 0155 O S PGO 39 38 90 91 LM1 4 3B LU2 4 3Z LB4 14095451 6 N L VALVE EXH STD PGO 23 36 90 91 LM1 4 3B LU2 4 3Z LB4 14095459 6 17 35 VALVE EXH 0035 O S PGO 39 38 wl 90 91 LM1 4 3B LU2 4 3Z LB4 14095460 6 17 35 VALVE EXH 0155 O S PGO 39 38 0 303 SPRING Engine Valve I I I V 85 89 M1 4 3N Z 3911068 12 3 75 SPRING W DAMPER VALVE PGO 23 40 90 91 LM1 4 3B LU2 4 32 LB4 3911068 12 3 75 SPRING VLV W DMPR PGO 23 40 0 308 SEAL SEAL KIT SHIELD Engine Valve 85 89 M1 4 3N Z V 460483 6 N L SEAL W RET INL VALVE STEM STD 003 0 5 PGO 7 46 I 85 89 M1 4 3N Z 3835333 12 N L SEAL VALVE STEM OIL PGO 7 39 85 87 M1 4 3N Z 14025563 6 53 SEAL VALVE STEM OIL STD 0035 p V 0155 O S PGO 23 39 85 86 M1 4 3N Z 14025567 6 80 SEAL EXHAUST VALVE STEM OIL 0305 O S 85 89 M1 4 3N Z 14037715 6 15 25 SEAL W RET INLET VALVE STEM OIL 015 O S 85 89 M1 4 3N Z 14037716 6 15 25 SEAL W RET INLET VALVE STEM OIL I 030 0 S 4 90 91 LM1 4 3B LU2 4 32 LB4 460483 6 N L SEAL INT VLV STEM OIL STD 003 0 S PGO 7 46 90 91 LIIVI1 4 3B LU2 4 3Z LB4 3835333 12 N L SEAL VLV STEM OIL PGO 7 39 90 91 LM 1 4 3B LU2 4 3Z LB4 14037715 6 15 25 SEAL INT VLV STEM OlL 015 O S 90 91 LM1 4 3B LU2 4 3Z LB4 14037716 6 15 25 SEAL INT VLV STEM OIL 030 0 S 85 89 M1 4 3N Z 14033546 1 30 50 SEAL KIT VALVE STEM OIL 85 89 M1 4 3N Z A 10007818 12 73 SHIELD VALVE STEM OIL PGO 7 44 A 90 91 LM1 4 3B LU2 4 3Z LB4 10007818 12 73 SHIELD VLV STEM OIL PGO 7 44 0 309 CAP ROTATOR Engine Valve Spring I I 85 89 M1 4 3N Z 14003974 6 1 15 CAP INTAKE VALVE SPRING PGO 23 45 90 91 LM1 4 3B LU2 4 3Z LB4 14003974 6 1 15 CAP VLV SPR PGO 23 45 I 85 89 M1 4 3N Z 14042575 6 3 85 ROTATOR EXHAUST VALVE PGO 23 43 90 91 LM1 4 3B LU2 4 3Z LB4 14042575 6 4 3 85 ROTATOR VLV EXH PGO 23 43 0 310 KEY Engine Valve Spring 85 89 M1 4 3N Z 3947770 24 48 KEY VALVE ISTEM PGO 7 40 90 91 LM1 4 3B LU2 4 3Z LB4 3947770 24 4 8 KEY VLV STEM PGO 7 40 0 333 ARM Engine Valve Rocker 85 89 M1 4 3N Z 10089648 12 N L ARM W BALL KIT VALVE ROCKER PGO I I 24 80 90 91 LM1 4 3B LU2 4 3Z LB4 10089648 12 N L ARM VLV RKR W BALLKIT PGO 24 80 0 386 COVER Engine Valve Rocker Arm I 85 86 M1 4 3N Z 14091554 LH 25 00 COVER VLV RKR USE 2 14088793 GASKETS UNDER EA BOLT PGO 23 25 85 86 M1 4 3N Z 14091560 RH 25 00 COVER VLV RKR USE 2 14088793 I GASKETS UNDER EA BOLT PGO 23 25 87 89 M1 4 3N Z 14091554 RH 25 00 COVER VLV RKR USE 2 14088793 I GASKETS UNDER EA BOLT PGO 23 25 I 87 89 M1 4 3N Z 14091560 LH 25 00 COVER VLV RKR USE 2 14088793 GASKETS UNDER EA BOLT PGO 23 25 90 91 LM1 4 3B LU2 4 3Z LB4 14091554 RH 25 00 COVER VLV RKR ARM PGO 23 25 90 91 LM1 4 3B LU2 4 32 LB4 14091560 LH 25 00 COVER VLV RKR ARM PGO 23 25 0 413 BOLT Engine Valve Rocker Arm Cover 85 89 M1 4 3N Z 10066008 6 48 BOLT VLV RKR COVER BOLT HEX W WA 620D 1 4 2OX3 4 00 446 PGO 31 I 26 90 91 LM1 4 3B LU2 4 3Z LB4 10066008 6 48 BOLT VLV RKR ARM CVR BOLT HEX W WA 62OD 1 4 20X3 4 00 446 V A PGO 31 26 8 0 423 GASKET Engine Valve Rocker Arm Cover 85 89 M1 4 3N Z Q 14081257 2 N L GASKET VALVE ROCKER ARM COVER E PGO 23 26 85 86 M1 4 3N Z 14088793 6 I 21 GASKET VALVE ROCKER COVER BOLT PGO 23 24 90 91 LM1 4 3B LU2 4 3Z LB4 14081257 2 N L GASKET VLV RKR ARM CVR PGO 23 26 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52M T 0 297 0 423 I 0 14 1 91