A

Mainshaft & 3-4 Clutch

51B_A.jpg
30
31
80
81
82
51
6
5
83
5
6
30
31

B

Secondary Shaft & 1-2 Clutch

51B_B.jpg
85
44
84
30
31
6
5
87
5
6
45
31
30
86
52

C

Countershaft & Low Hold Clutch

51B_C.jpg
88
89
90
95
53
91
92
30
31
5
6
93
94

D

Case And Filter

51B_D.jpg
26
20
24
1
2
22
38

Codes

A6VA, AOYA, APX4, APXA, B6VA, B7VA, B7XA, B7YA, B7ZA, BAXA, BOYA, E7YA, M6HA, M7YA, MAXA, MCJA, MCKA, MDWA, MDXA, MGPA, MJ4A, MP1A, MPGA, MPJA, MPOA, MPRA, MPXA, MPZA, MR9A, PX4B, MPWA (with no Pan), RO (with Modulator).
 * Some Codes may not be listed.

Please check the following to enable us to identify the correct kit:

overhaul kits

NO PART # DESCRIPTION SIZE YEARS QTY
Kit 51010K Overhaul Kit PX4B Carburetted With 110, 116 & 120mm Plates 91-ON 1
Kit 51012K Overhaul Kit PX4B, A6VA, APXA, APX4, BOYA, MPXA (MPXA With 116mm Plates order 51130 Gasket Separately), MPOA, MP1A, MP6A, MPJA, MPWA (Without Pan) With 120mm Clutch Plates Transtec 90-ON 1
Kit 51014K Overhaul Kit MPRA, RO (With Modulator) With 116mm Clutch Plates Transtec 92-ON 1
Kit 51018K Overhaul Kit B7VA, B7XA, B7YA, B7ZA, E7YA, M7YA, MPZA With 120mm Plates Transtec 95-ON 1
Kit 51018KA Overhaul Kit Precision 95-ON Alt
Kit 51024K Overhaul Kit M6HA, BAXA, MAXA, MCJA, MCKA (Also Order Case Gasket 51147) B6VA,MDXA, MDWA. MGPA, MPGA With Various size Clutch Plates Transtec 98-ON 1
Kit 51024KA Overhaul Kit Precision 98-ON Alt

MCKA Also Order Case Gasket 51147

master kits

NO PART # DESCRIPTION SIZE YEARS QTY
Kit 51018KM Master Kit (B7XA) 90-ON 1
Kit 51024KM Master Kit Honda (MDWA/MGPA) 90-ON 1

gaskets

NO PART # DESCRIPTION SIZE YEARS QTY
1D 51130A Case Gasket BAXA, MAXA, MDWA, M6HA 90-ON Alt
1D 51131 Case Gasket (MAXA/MGPA) 90-ON 1
1D 51131A Case Gasket (MAXA/MGPA) 90-ON Alt
1D 51132 Case Gasket PX4 Fuel Injected, MP1A With 120mm Clutch Plates 88-ON 1
1D 51134 Case Gasket RO, MPRA With 116mm Clutch Plates 90-ON 1
1D 51136 Case Gasket MPZA 90-ON 1
1D 51136A Case Gasket B7YA, M7YA 90-ON 1
1D 51137 Case Gasket M6HA, B6VA, MCJA, MDWA, 90-ON 1
1D 51146 Case to Case Gasket (MGRA) 4WD 90-ON 1
1D 51147 Case Gasket MCKA, MDXA 90-ON 1
1D 51148 Case Gasket MR9A 96-ON 1
2D 51120 End Cover Gasket RO, MPRA With 116mm Clutch Plates 90-ON 1
2D 51122 End Cover Gasket MP1A, PX4 Carburetted & Injected With 120mm Clutch Plates 90-ON 1
2D 51126 End Cover Gasket MCKA, MPZA, M7YA 90-ON 1
2D 51127 End Cover Gasket MAXA, M6HA, MCJA, MCKA, MDWA 90-ON 1
2D 51127A End Cover Gasket M6HA, B6VA 90-ON 1
2D 51149 End Cover Gasket MR9A 90-ON 1

rubber components

NO PART # DESCRIPTION SIZE YEARS QTY
5A 51170 Inner Clutch O Ring 106, 110, 116mm Clutch Plates 90-ON AR
5A 51180 Inner Clutch O Ring 120mm Clutch Plates 120 ID 90-ON AR
5B 51170 Inner Clutch O Ring 106, 110, 116mm Clutch Plates 90-ON AR
5B 51180 Inner Clutch O Ring 120mm Clutch Plates 120 ID 90-ON AR
5C 51170 Inner Clutch O Ring 106, 110, 116mm Clutch Plates 90-ON AR
5C 51180 Inner Clutch O Ring 120mm Clutch Plates 120 ID 90-ON AR
6A 50172 Outer Clutch O Ring With 106mm Plates 104 x 2.2mm 90-ON AR
6A 51174 Outer Clutch O Ring With 110mm Plates 110 OD x 2.2mm 90-ON AR
6A 51176 Outer Clutch O Ring With 116mm Plates 116 OD 90-ON AR
6A 51182 Outer Clutch O Ring With 120mm Plates 120 OD 90-ON AR
6B 50172 Outer Clutch O Ring With 106mm Plates 104 x 2.2mm 90-ON A
6B 51174 Outer Clutch O Ring With 110mm Plates 110 OD x 2.2mm 90-ON AR
6B 51176 Outer Clutch O Ring With 116mm Plates 116 OD 90-ON AR
6B 51182 Outer Clutch O Ring With 120mm Plates 120 OD 90-ON AR
6C 50172 Outer Clutch O Ring With 106mm Plates 104 x 2.2mm 90-ON AR
6C 51174 Outer Clutch O Ring With 110mm Plates 110 OD x 2.2mm 90-ON AR
6C 51176 Outer Clutch O Ring With 116mm Plates 116 OD 90-ON AR
6C 51182 Outer Clutch O Ring With 120mm Plates 120 OD 90-ON AR
NI 50160 Converter Hub O Ring 32 ID x 1.90mm 90-ON 1

seals

NO PART # DESCRIPTION SIZE YEARS QTY
20D 50200 Converter Seal 4 Cylinder Anti-Clockwise Rotation All Except Codes Listed Below 42.5 ID x 68.3 OD x 8.00mm 90-ON 1
20D 51202 Converter Seal V6 Clockwise Rotation B7YA, B7ZA, B7VZ, B7XA, E7YA, MPZA & M7YA 44 ID x 68OD x 8.00mm 95-ON 1
22D 51220 Axle Lefthand 40 ID x 66.3 OD x 8.00mm 90-ON 1
24D 51228 Axle Righthand 40 ID x 56.3 OD x 9.00mm 90-ON 1
26D 75205 Selector Shaft 12 ID x 22 OD x 7.00mm 90-ON 1
NI 51246 Front Intermediate Shaft Seal 39ID x 56.3OD x 8mm 09-ON 1

sealing rings

NO PART # DESCRIPTION SIZE YEARS QTY
Kit 51251K Sealig Ring Kit Honda APXA/BOYA/MJ4A 90-ON 1
Kit 51254K Sealig Ring Kit M6HA,MDWA,MAXA,B6VA 90-ON 1

friction plates

NO PART # DESCRIPTION SIZE YEARS QTY
Kit 51304K Friction Kit (BAXA/MAXA/M6HA/MDWA) GPX 90-ON 1

thrust washers & bearings

NO PART # DESCRIPTION SIZE YEARS QTY
44B 51466 Second Gear to Case Bearing 36 ID x 56 OD x 2.00mm 92-ON 1
NI 51488 Thrust Bearing 42 ID x 67 OD x 3.00mm 90-ON 1
NI 51930 Bearing Differential Carrier 40 ID x 80 OD x 18.75mm 90-ON 1
NI 51932 Bearing Differential Carrier 40 ID x 76.2 OD x 16.00mm 90-ON 1
NI 51940 Secondary Shaft Ball Bearing 27 ID x 75 OD x 13.00mm 92-ON 1
NI 51942 Counter Shaft Ball Bearing 31 ID x 75 OD x 16.50mm 92-ON 1

filters

NO PART # DESCRIPTION SIZE YEARS QTY
38D 51564 Filter PX4B, APX4 Injected 90-91 1
38D 51568 Filter RO, MPRA 90-93 1
38D 51569 Filter BOYA, MJ4A, MPOA, MP1A, MP6A, MPJA 90-97 1
38D 51570 Filter MR9A (NSX) 91-ON 1
38D 51573 Filter BAXA, B7VA, B7YA, B7ZA, MDWA 98-ON 1
NI 51571 FILTER M6HA/MAXA/MCJA/MDWA/MCKA 97-ON 1

Transmission must be Disassembled to change Filter.

electrical components

NO PART # DESCRIPTION SIZE YEARS QTY
NI 51700 Solenoid, Dual Linear MGPA 90-ON 1
NI 51720 2-3 Clutch Oil Pressure Switch Black 90-ON 1
NI 51730 2-3 Clutch Oil Pressure Switch Green 90-ON 1
NI 51733 Oil Pressure Switch 3rd Clutch (Brown) 90-ON 1

sundry parts

NO PART # DESCRIPTION SIZE YEARS QTY
51A 51786 Mainshaft Nut B7XA, B7YA, M7YA 90-ON 1
52B 51767 Secondary Shaft 90-ON 1
52B 51785 Secondary Shaft B7XA, B7YA, M7YA* *Special Order Only 90-ON 1
53C 51767 Countershaft Nut B7XA, B7YA, M7YA 90-ON 1

shift & reprogramme kits

NO PART # DESCRIPTION SIZE YEARS QTY
Kit 51800K Lube Correction Kit, TransGo 97-09 1
Kit 51804K Shift Correction Package (MAXA/MDWA/M6HA) Superior 90-ON 1
Kit 51806K Shift Correction Package (B7XA) Superior 90-ON 1

hard parts

NO PART # DESCRIPTION SIZE YEARS QTY
85B 51960 2nd Gear Secondary Shaft MDWA, MDXA, MGP, MGRA 90-ON 1
NI 51952 Differential Pin Modified Type 90-ON 1

fluids

NO PART # DESCRIPTION SIZE YEARS QTY
NI 49911 Lubegard Black 90-ON 1
NI 49999-04 ATF DX III 4 Litre 90-ON AR