Cylinder & Crank
Gasket sets are at the bottom.
Number | Part Number | Description | Per | Model |
NI | 4047 | Liner | 1 | All |
NI | PACK-ADV-002 | Valve & guide pack | A | All |
NI | PACK-ADV-007 | Oil feed/return pack | A | All |
NI | PACK-INTER-002 | Top end overhaul pack | A | All |
NI | PACK-START-005 | Exhaust pack | A | All |
1 | 19-7621 | Plug Cover | 1 | All |
2 | 19-7606 | Spark plug B8ES | 1 | All |
3 | 66-0102 | Spark Plug washer | 1 | 1967-70 |
4 | 46-0695 | Nut | 2 | 1967 |
4 | 14-0403 | 3/8 UNF lock nut | 2 | 1969-71 |
4 | 46-0066 | Nut, rocker spindle | 2 | 1968 |
5 | 02-2138 | Washer | 2 | All |
6 | 40-0968 | Rocker box cap | 2 | All |
7 | 40-0969 | Rocker cap gasket | 2 | All |
8 | 40-0963 | Rocker box gasket | 1 | 1967 |
8 | 70-7858 | Rocker box gasket | 1 | 1968-70 |
8 | 71-2198 | Rocker box gasket | 1 | 1971- |
9 | 76-0378 | Alloy washer | 1 | 1969-71 |
9 | 24-6040 | Half Nut | 1 | 1969 |
10 | 76-0308 | Oil pipe adapter | 1 | All |
11 | 29-2089 | 3/16 union nut | 1 | All |
12 | 40-0997 | Oil pipe with nut & spigot | 1 | 1969 |
12 | 40-0993 | Rocker feed pipe | 1 | 1969-71 |
13 | 40-0939 | Rocker box stud | 2 | 1967-70 |
13 | 14-1628 | Head stud 5/16×3 1/4 | 2 | 1971- |
14 | 66-3074 | Dowel | 2 | 1967-70 |
14 | 71-1989 | Dowel | 2 | 1971- |
15 | 40-0942 | Rocker box stud | 2 | 1967-70 |
15 | 14-1627 | Cylinder Head Stud | 2 | 1971- |
16 | 40-0127 | Stud | 2 | 1967-70 |
16 | 21-2092 | Rocker box stud 5/16UNCFx3 1/4 | 2 | 1971- |
17 | 40-0940 | Stud | 3 | 1969 |
17 | 14-1629 | Stud, 5/16 x 3.5 UNC/F | 3 | 1971- |
17 | 70-7996 | Stud | 3 | 1969-70 |
18 | 46-0044 | Nut | 1 | 1967-68 |
19 | 02-0525 | 1/4 plain washer | 1 | 1967-68 |
20 | 71-2938 | Exhaust lifter arm (41-0176) | 1 | 1967-68 |
21 | 40-1000 | Exhaust lifter cup | 1 | 1967-68 |
22 | 40-0418 | O’ ring | 1 | 1967 |
22 | 68-0289 | O’ ring | 1 | 1968 |
23 | 40-0999 | Valve Lifter | 1 | 1967-68 |
24 | 24-6040 | Half Nut | 2 | 1967-70 |
24 | 14-0302 | 5/16 UNF nut | 2 | 1971- |
25 | 02-0923 | Washer | 2 | All |
26 | 40-0209 | Nut 1/4 CEI Nyloc | 7 | 1967-70 |
26 | 14-1302 | Nut, 5/16 UNF | 7 | 1971- |
27 | 02-0525 | 1/4 plain washer | 7 | 1967-70 |
28 | 40-0961 | Rocker Box | 1 | 1967 |
28 | 70-7818 | Rocker Box | 1 | 1968 |
28 | 70-7911 | Rocker Box | 1 | 1969-70 |
29 | 68-0662 | Exhaust valve | 1 | 1967 |
29 | 70-7777 | Exhaust valve | 1 | 1968-71 |
29 | 71-2196 | Exhaust Valve | 1 | 1971- |
30 | 40-0932 | Exhaust valve guide | 1 | 1967-70 |
30 | 71-2226 | Exhaust valve guide | 1 | 1971- |
31 | 40-0158 | Rocker thrust washer | 2 | All |
32 | 40-0156 | Rocker spring | 2 | 1967 |
33 | 40-0989 | Inlet Rocker | 1 | 1967 |
33 | 70-7790 | Rocker inlet | 1 | 1968-71 |
34 | 40-0990 | Exhaust rocker | 1 | 1967 |
34 | 70-7791 | Exhaust Rocker | 1 | 1968-71 |
35 | 40-0157 | Spindle washer | 2 | All |
36 | 40-0994 | Rocker spindle | 1 | 1967 |
36 | 70-7787 | Rocker Spindle | 1 | 1968-71 |
37 | 40-0967 | Rocker spindle inspection gasket | 1 | 1967-70 |
37 | 71-1425 | Rocker spindle inspection gasket | 1 | 1971- |
38 | 40-0966 | Inspection Cover | 1 | All |
39 | 40-0965 | Rocker inspection cover screw | 2 | All |
40 | 40-1010 | Inlet push rod | 1 | All |
40 | 40-1021 | Exhaust push rod | 1 | All |
41 | 24-5160 | Nut, 5/16″x26 TPI | 2 | All |
42 | 02-0923 | Washer | 2 | 1967-70 |
43 | 40-0933 | Head gasket | 1 | All |
44 | 76-0028 | Stud | 2 | 1968 |
44 | 40-0020 | Stud 5/16×2 3/4 | 2 | 1969-71 |
45 | 40-2712 | Nut | 1 | 1967-70 |
46 | 41-0668 | Tappet | 2 | All |
46 | 70-7739 | Tappet | 2 | All |
47 | 40-2710 | Finned clamp | 1 | 1967-70 |
48 | 40-2711 | Screw | 1 | 1967-70 |
49 | 40-2845 | Exhuast pipe | 1 | 1967-68 |
49 | 70-9412 | Exhuast pipe high level | 1 | 1969 |
49 | 70-9724 | Exhuast pipe | 1 | 1969-70 |
49 | 71-1178 | Exhaust pipe High level | 1 | 1970 |
49 | 71-2176 | Exhuast pipe | 1 | 1971-onwards |
50 | 40-0949 | Cylinder Barrel | 1 | 1969 |
50 | 70-9263 | Cylinder Barrel | 1 | 1969-71 |
51 | 40-0953 | Base gasket | 1 | 1967 |
51 | 70-7728 | Base gasket | 1 | 1968-70 |
51 | 71-2233 | Base gasket | 1 | 1971-onwards |
52-54 | R11640 / STD / 10 / 20 / 40 / 60 | Piston Rings Standard – 60 | 1 | All |
55 | 16945 /STD /20 /40 /60 /80 | Piston, c.r. 9:5 or 10:1, complete | 1 | All |
56 | 40-0978 | Gudgeon pin | 1 | 1967-70 |
56 | 70-6861 | Gudgeon pin | 1 | 1971- |
57 | 40-979 | Piston circlip | 2 | 1967-70 |
57 | 70-6869 | Piston circlip | 2 | 1971- |
58 | 24-0732 | Bearing | 1 | 1967-70 |
59 | 40-0066 | Shim | – | All |
60 | 40-1024 | Crankshaft | 1 | 1969 |
60 | 70-9547 | Crankshaft | 1 | 1969 |
60 | 70-9848 | Crankshaft | 1 | 1970 |
60 | 71-2284 | Crankshaft | 1 | 1971- |
61 | 41-0560 | Key | 1 | All |
62 | 40-1027 | Flywheel right hand | 1 | 1969 |
62 | 70-9907 | Flywheel right hand | 1 | 1969-70 |
62 | 71-2288 | Flywheel right hand | 1 | 1971- |
63 | 2-0049 | 5/16 nut | 2 | 1967 |
63 | 42-4476 | 3/8 CEI Nyloc nut | 2 | 1968-70 |
64 | 24-8784 | Spring washer, 5/16 | 1 | 1967 |
65 | 65-1162 | Carb gasket | 2 | 1967 |
66 | 40-0913 | Big end bolt | 1 | 1967-70 |
66 | 70-9914 | Big end Bolt | 1 | 1971- |
67 | 65-1238 | Carburettor insulator | 1 | 1967 |
67 | 70-7820 | Inlet gasket | 1 | 1968-71 |
68 | 65-1232 | Gasket, carb | 1 | 1967-70 |
68 | 71-1416 | Carburetter Gasket | 1 | 1971- |
69 | 68-0018 | Stud 5/16 x 1 27/64 | 2 | 1967-70 |
69 | 14-1620 | Stud 5/16×1 3/8 UNF/C | 2 | 1971- |
70 | 40-0929 | Cylinder Head | 1 | 1967-70 |
70 | 71-2238 | Cylinder head B25 | 1 | 1971- |
71 | 68-0661 | Inlet valve | 1 | All |
72 | 40-1018 | Valve spring bottom cup | 2 | 1967-70 |
72 | 71-2366 | Valve spring cup | 2 | 1971- |
73 | 40-0931 | In valve guide | 1 | 1967-70 |
73 | 71-2231 | Inlet valve guide | 1 | 1971- |
74 | 40-1008 | Valve Spring Outer | 2 | 1969 |
74 | 40-1009 | Outer valve spring | 2 | 1969-70 |
74 | 71-2223 | Outer valve spring B25 | 2 | 1971- |
75 | 40-0998 | Oil Pipe | 1 | 1967 |
75 | 40-1037 | Rocker oil feed pipe | 1 | 1968-70 |
76 | 68-0158 | Collet A50 etc | 4 | 1967 |
76 | 71-1166 | Collet | 4 | 1968-70 |
77 | 40-1019 | V/spring top collar | 2 | 1967-69 |
77 | 40-1165 | Valve Spring Collar | 2 | 1970 |
77 | 71-1165 | Top collar | 2 | 1971- |
78 | 40-1007 | Inner spring | 2 | All |
79 | 40-0916 | Small end bush | 1 | 1968-70 |
80 | 40-0908 | Connecting rod | 1 | 1967 |
80 | 70-8836 | Con rod | 1 | 1968-70 |
80 | 70-9911 | Con Rod | 1 | 1971- |
81 | 40-0907 | Big end Shells,pr, std | 1 | All |
81 | 40-0917 | Big end shells .010 | 1 | All |
81 | 40-0918 | Big end Shells, 020 | 1 | All |
81 | 40-0919 | Big end shells .030 | 1 | All |
82 | 40-0915 | Big end nut | 2 | 1967-70 |
82 | 21-2016 | Big end Locknut | 2 | 1971- |
83 | 24-0732 | Bearing | 1 | 1967 |
83 | 24-0724 | Main bearing, Drive side inner | 1 | 1968-70 |
84 | 41-0673 | Camshaft key | 1 | All |
85 | 40-1030 | Flywheel bolt 3/8UFx1 1/8 | 4 | All |
86 | 68-0582 | Thrust washer, | 8 | All |
87 | 40-1029 | Flywheel Right hand | 1 | 1969 |
87 | 70-9906 | Flywheel LH | 1 | 1969-70 |
87 | 71-2287 | Flywheel LH B25 | 1 | 1971- |
88 | 40-0892 | Sludge plug | 1 | All |
89 | 40-1031 | Flywheel bolt | 4 | All |
93 | 62-0263 | Hose clip for oil pipe | 1 | 1968-70 |
– | 68-5197 | Fibre washer, inspection cover screw | 1 | 1971 |
– | GS335 | Gasket set B25/C25 1967-70 | ||
– | GS835 | Gasket set B25 71-72 | 1971- |
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