Valves & Guides
For our valve & guide pack please click here.
Pre-unit A Group |
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Model |
Years |
Valve guide |
Valve |
||
Inlet |
Exhaust |
Inlet |
Exhaust |
||
A7/A10 (iron head models only) |
All | 10100-54-SET
SAVE OVER 25%! |
10100-54-SET
SAVE OVER 25%! |
10100-54-SET
SAVE OVER 25%! |
10100-54-SET
SAVE OVER 25%! |
A7 |
1947-50 | 67-0031 | 67-0032 | 67-0029 | 67-0030 |
A7ST |
1949-50 | 67-0031 | 67-0032 | 67-0189 | 67-0190 |
A7/ST |
1951-57 | 67-0031 | 67-0031 | 67-0394 | 67-0395 |
A7 |
1958-62 | 67-0031 | 67-0031 | 67-0740 | 67-0741 |
A7SS |
1954-55 | 67-1140 | 67-1140 | 67-0394 | 67-0395 |
A7SS |
1956-57 | 67-1140 | 67-1140 | 67-0351 | 67-0532 |
A7SS |
1958-62 | 67-1110* | 67-1110* | 67-0740 | 67-0741 |
A10/SF |
1950-57 | 67-0031 | 67-0031 | 67-0323 | 67-0324 |
A10 |
1958-62 | 67-0031 | 67-0031 | 67-0742 | 67-0743 |
A10RR |
1954-55 | 67-1140 | 67-1140 | 67-0323 | 67-0324 |
A10RR/SR |
1956-57 | 67-1140 | 67-1140 | 67-0968 | 67-0967 |
A10RR/SR |
1958-59 | 67-1110* | 67-1110* | 67-968 | 67-0967 |
A10RR/SR |
1960-63 | 67-1110* | 67-1110* | 67-1551 | 67-0967 |
A10 RGS / SR |
1960-63 – Oversize inlet | 67-0961 | 67-0967 | ||
BSA actually fitted cast iron guides to the later aluminium alloy heads but we recommend the bronze as detailed above. We can of course supply the cast iron if preferred; they were fitted from engine numbers CA7SS 4024 and CA10R 5602.We also have some oversize versions of 67-1110 valve guide – 0.002 and 0.004 |
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Pre-unit B Group |
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Model |
Years |
Valve guide |
Valve |
||
Inlet |
Exhaust |
Inlet |
Exhaust |
||
B21/2 |
1937-39 | 65-0207 | |||
B20/23 |
1937-39 | 65-0042 (2) | 65-0042 (lower) | ||
B23 de Luxe |
1939 | 65-0224 | |||
B24/25/26 |
1937-39 | 65-0152 | |||
B29 |
1940 | 65-1111 | 65-1110 | ||
B31/2 |
1946-48 | 65-1145 | 65-1144 | 65-1111 | 65-1110 |
B31 |
1949-60 | 65-1513 | 65-1514 | 65-1111 | 65-1110 |
B32 iron head |
1949-53 | 65-1513 | 65-1514 | 65-1111 | 65-1110 |
B31/2 alloy head |
1950-53 | 65-1511 | 65-1512 | 65-1111 | 65-1110 |
B32 |
1954-57 | 65-1595 | 65-1596 | 65-1759 | 65-1760 |
B33 |
1947-48 | 65-1241 | 65-1242 | 65-1239 | 65-1240 |
B33 |
1949-60 | 65-1515 | 65-1516 | 65-1239 | 65-1240 |
B34 |
1947-48 | 65-1241 | 65-1242 | 65-1239 | 65-1240 |
B34 iron head |
1949-53 | 65-1515 | 65-1516 | 65-1239 | 65-1240 |
B33/4 alloy head |
1950-53 | 65-1517 | 65-1518 | 65-1352 | 65-1353 |
B34 |
1954-57 | 65-1597 | 65-1598 | 65-1752 | 65-1753 |
M Group |
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Model |
Years |
Valve guide |
Valve |
||
Inlet |
Exhaust |
Inlet |
Exhaust |
||
M19 |
1937-38 | 66-0144 | 66-0143 | 66-0217 | 66-0215 |
M20/21 |
1937-39 | 66-0137 (2) | 66-0137/8 | 66-0206 | 66-0208 |
M20/21 |
1940-63 | 66-0140 | 66-0139 | 66-0235 | 66-0236 |
M22/23 |
1937-40 | 66-0143 | 66-0142 | 66-0213 | 66-0211 |
M24 |
1938-39 | 66-0193 | 66-0194 | 66-0213 | 66-0211 |
M33 |
1948-57 | 65-1515 | 65-1516 | 65-1239 | 65-1240 |
Pre-unit C Group |
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Model |
Years |
Valve guide |
Valve |
||
Inlet |
Exhaust |
Inlet |
Exhaust |
||
C10/10L |
1939-57 | 29-2109 | 29-2110 | 29-2120 | 29-2121 |
C11 |
1939-40 | 65-0037 | 65-0037 | 65-0208 | 65-0208 |
C11/11G/12 |
1946-58 | 65-0037 | 65-0037 | 29-2124 | 65-0208 |
C12 |
1940 | 29-2109 | 29-2110 | 29-2591 | 29-2592 |
17 Automatic or mechanical inlet valves “A mechanically-operated inlet valve is to be preferred, because it never sticks, no parts of it can get adrift in the cylinder, and the engine will run more slowly on a hill.” |
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