Product Description
Build your own rebuild kit for the NV5600 manual transmission. ONE builder covers both 2WD/4WD and early/late units because only ~6 parts differ; those choices carry the version in the label (1999-2000 1-1/4" input vs 2001-2005 1-3/8" input; 4x4 29-spline vs 4x2 31-spline mainshaft). Pick the overhaul kit that matches your case, then add only the parts you need.
Build your own NV5600 rebuild kit: choose the parts that match the transmission on your bench and leave out what you don't need. This builder has 10 option groups and 48 choices, all optional, so the kit holds only what you pick.
What you can choose
- Choose Your Overhaul Kit: BK492WS Bearing, gasket & seal kit WITH synchro rings (recommended - most complete); BK492 Bearing, gasket & seal kit - no synchro rings
- Add Synchro rings: 424701-5 1-6/Reverse OUTER synchro ring (NOT in BK492WS - most rebuilds need these); 424701-3 1-6/Reverse CENTER (middle) fiber ring - already in BK492WS; add if you chose BK492; 424701-1 1-2 INNER steel cone ring; 302703-2K Synchro key, spring & ball set (3)
- Add Synchro assemblies, hubs & sliders: 424701K 1-2 synchro assembly (complete); 424705K 5-6 synchro assembly (complete); 424706K Reverse synchro assembly (complete); 424606A 1-2 hub; 424606E 5-6 hub; 424606F Reverse hub; 424641 1-2 slider sleeve
- Add Gears: 424586 6th gear, mainshaft, 24T (most common hard-part failure); 424586-1 6th gear, countershaft, 57T (mates with 24T mainshaft 6th; ratio check 0.73 OK); 424585-1 Countershaft drive gear 45T; 424581 1st gear, 39T; 424582 2nd gear, 39T; 424583-1 3rd gear, countershaft, 28T; 424584-1 4th gear, countershaft, 36T; 424587 Reverse gear, 39T; A424587-12 Reverse countershaft gear, 12T
- Add 5a. Input shaft: 424670 Input shaft 1-3/8" 10-spline, 26T - 2001-2005 ONLY (not for 1999-2000 1-1/4" units)
- Add 5b. Mainshaft: 424672A Mainshaft 4x4 (4WD) - 29 spline, 22.5" OA; 424672 Mainshaft 4x2 (2WD) - 31 spline, 23.5" OA
- Add Bearings & needle kits: 424271K Needle bearing kit - 1st, 3rd/4th, reverse, 6th; 394274A Countershaft rear bearing; 424240-2 Input bearing cone 48 ID; 424240-3 Input bearing cup 88.5 OD; 334240 Input (pocket) needle bearing; 424260-2 Countershaft front bearing cone 45 ID x 20 W; 424260-3 Countershaft front bearing race 73.5 OD x 15.6 W
- Add 7a. Front seal: 424070 Front (input) seal - 2001-2005, 1-3/8" input; 334070 Front (input) seal - 1999-2000, 1-1/4" input
- Add Seals, retainer & bushings: 29494 Front bearing retainer (use 424070 seal for 1-3/8" or 334070 for 1-1/4"); 424077 Output / adapter seal - 4x4 only; AT22728 Shift rail bushing
- Add Small parts & hardware: 424795 Mainshaft nut; 424860G Countershaft cluster snap ring kit (3); 424860K 1st gear snap ring kit (2); 424225K Input shim kit; 424226K Rear shim kit; AT26281 Countershaft front shim kit; NV5600-801 Oil baffle 1-3/8" (late input); 424271A 1st gear thrust washer; 424208 3rd gear washer (center shaft); 424215 Reverse washer; 334627 Shifter spacer plate
