4 SPEED MANUAL TRANSMISSION 4 426 SPACER Transmission Countershaft Gear Con 91 R3 43 M TRNS M20 14020811 1 3 10 SPACER CTSHFT GR BRG 1 56 IN LONG PG4 1 1 26 44 4 91 V1 2 3 M TRNS M20 14020811 1 3 10 SPACER CTSHFT GR BRG 1 56 IN LONG PG4 1 1 26 r 4 428 SHAFT Transmission Counter 85 86 CK1 2 MY6 14039095 1 26 50 SHAFT CUUNTER GEAR PG4 7 43 87 RV1 Z MY6 14039095 1 26 50 SHAFT COUNTER GEAR PG4 7 43 4 429 V KEY Transmission Countershaft Geer 85 86 CK1 2 MY6 2448135 1 57 KEY COUNTER GEAR SHAFT PG4 7 44 87 RV1 2 MY6 2448135 1 57 KEY COUNTER GEAR SHAFT PG4 7 44 4 430 GEAR Transmission Reverse idler 8586 CK1 2 MY6 14053370 I 66 75 GEAR REV IDLER PG4 7 34 85 86 CK1 2 3 M20 3901141 I N L GEAR REV IDLER PG4 I 1 49 87 RV1 2 MY6 14053370 I 66 75 GEAR REV IDLER PG4 7 34 87 90 RV1 2 3 M20 3901141 1 N L GEAR REV IDLER PG4 I 1 49 91 R3 43 M TRNS M20 3901141 1 N L GEAR REV IDLER PG4 1 1 49 91 V1 2 3 M TRNS M20 3901141 I N L GEAR REV IDLER PG4 1 1 49 4 433 SHAFT Transmission Reverse Idler B5 85 CK1 2 MY6 14039101 1 17 45 SHAFT REV IDLER PG4 7 36 85 86 CK1 2 3 M20 3901144 1 29 25 SHAFT REV IDLER PG4 11 50 87 RV1 2 MY6 14039101 1 17 45 SHAFT REV DLER PG4 7 36 87 90 RV1 2 3 M20 3901144 1 29 25 SHAFT REV IDLER PG4 11 50 91 R3 43 M TRNS M20 3901144 I 29 25 SHAFT REV IDLER GR PG4 11 50 91 V1 2 3 M TRNS M20 3901144 1 29 25 SHAFT REV IDLER GR PG4 1 1 50 4 436 KEY Transmission Reverse Idler Gear 85 86 CK1 2 MY6 2448135 1 57 KEY REV IDLER SHAFT 04 429 PG4 7 37 87 RV1 2 MY6 2448135 I 57 KEY REV IDLER SHAFT 04 429 PG4 7 37 4 439 BOLT COVER GASKET Transmission Power Take 01f 87 90 RV1 2 3 M20 336978 12 56 BOLT POWER TAKE OFF CVR 04 790 85 86 CK1 2 3 M20 6273213 Z 1 65 COVER POWER TAKE OFF 04 510 PG4 1 1 37 87 90 RV1 2 3 M20 6273213 Z 1 65 COVER POWER TAKE OFF 04 510 PG4 1 1 7 91 R3 43 M TRNS M20 6273213 Z 1 65 COVER PTO 04 510 PG4 I1 37 91 V1 2 3 M TRNS M20 6273213 2 1 65 COVER PTO 04 510 PG4 I1 37 85 86 CK1 2 3 M20 8672163 Z 1 25 GA KET POWER TAKE OFF CVR PG4 1 1 3 85 65 K3 TYPE 205 PART TIME 8672163 I 1 25 GASKET POWER TAKE 0FF CVR NP 35656 PG4 11 38 87 91 RV1 2 3 M20 8672163 2 1 25 GASKET POWER TAKE OFF CVR PG4 1 I 38 v 1990 GENERAL MOTORS SERVICE PARTS 0VEHAT ONS LT TRUCK 5ZH REv 9 90 4 31 4 426 4 439