Home>Make: BSA>1949-53 BSA A7/A10 (Rigid & Plunger)>Engine, Primary Drive & Clutch>Engine: Cylinder Head, Barrel, Valves & Crankshaft

1949-53 BSA A7/A10 Engine: Cylinder Head, Barrel, Valves & Crankshaft

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Plate #	Part Name	Part #	Qty Fitted	Description	Price
1	Valve spring cotter	29-410	4	Model: A7, A10 and Star Twin		View
2	Valve spring collar	67-34	4	Model: A7, A10 and Star Twin	Original price was: $28.00.Current price is: $19.60.	View
3	Valve spring (inner)	67-440	4	Model: A7, A10 and Star Twin	$52.00	View
4	Valve spring (outer)	67-439	4	Model: A7, A10 and Star Twin	$52.00	View
5	Valve guide (exhaust)	67-31	2	Model: A7, A10 and Star Twin	$31.00	View
6	Valve spring cup (bottom)	67-33	4	Model: A7, A10 and Star Twin	$17.00	View
7	Valve (inlet)	67-394	2	Model: A7
--	Valve (inlet)	67-323	2	Model: A10	$43.00	View
--	Valve (inlet)	67-531	2	Model: A7, Star Twin
--	Valve (inlet) (up to 1951)	67-29	2	Model: A7
--	Valve (inlet) (up to 1951)	67-189	2	Model: Star Twin
8	Rocker box inspection cover stud nut	65-2153	8	Model: A7, A10 and Star Twin	Original price was: $15.00.Current price is: $7.15.	View
9	Rocker box inspection cover nut washer	24-978	8	Model: A7, A10 and Star Twin	$0.30	View
10	Rocker box inspection cover	67-263	2	Model: A7, A10 and Star Twin
11	Rocker box inspection cover joint washer	67-279	2	Model: A7, A10 and Star Twin	$5.60	View
12	Rocker box inspection cover stud	67-280	7	Model: A7, A10 and Star Twin	$4.50	View
13	Rocker box cover stud	67-343	1	Model: A7, A10 and Star Twin
14	Rocker box	67-259	1	Model: A7, A10 and Star Twin
15	Rocker box bolt (long)	67-261	4	Model: A7, A10 and Star Twin		View
16	Rocker box bolt washer	24-8784	4	Model: A7, A10 and Star Twin	$0.45	View
17	Rocker box steady stay stud nut	24-6040	4	Model: A7, A10 and Star Twin	$2.65	View
18	Rocker box stud	67-1245	4	Model: A7, A10 and Star Twin	$15.00	View
19	Rocker box stud nut washer	36-382	2	Model: A7, A10 and Star Twin	$0.65	View
20	Engine steady stay	67-346	2	Model: A7, A10 and Star Twin
21	Valve (exhaust)	67-395	2	Model: A7
--	Valve (exhaust)	67-324	2	Model: A10	$52.00	View
--	Valve (exhaust)	67-532	2	Model: A7, Star Twin
--	Valve (exhaust) (up to 1951)	67-30	2	Model: A7
--	Valve (exhaust) (up to 1951)	67-190	2	Model: Star Twin
22	Rocker oil feed pipe banjo screw	65-306	2	Model: A7, A10 and Star Twin
23	Rocker oil feed pipe complete	67-450	1	Model: A7, A10 and Star Twin
24	Valve Rocker spindle	67-64	2	Model: A7, A10 and Star Twin
25	Valve rocker thrust washer	67-61	2	Model: A7, A10 and Star Twin
26	Valve rocker spindle washer (spring)	67-62	4	Model: A7, A10 and Star Twin	$3.80	View
27	Exhaust valve rocker (N/S)	67-266	1	Model: A7, A10 and Star Twin
28	Rocker adjusting screw	67-56	4	Model: A7, A10 and Star Twin	$2.20	View
29	Rocker adjusting nut	24-563	4	Model: A7, A10 and Star Twin	$2.20	View
30	Valve rocker thrust washer	67-60	6	Model: A7, A10 and Star Twin	$1.90	View
30A	Exhaust valve rocker (O/S)	67-267	1	Model: A7, A10 and Star Twin
31	Valve rocker spindle nut	65-311	2	Model: A7, A10 and Star Twin		View
32	Valve rocker spindle washer	36-481	2	Model: A7, A10 and Star Twin	$2.31	View
33	Valve rocker (inlet) (O/S)	67-265	1	Model: A7, A10 and Star Twin
34	Valve rocker (inlet) (N/S)	67-264	1	Model: A7, A10 and Star Twin
35	Exhaust pipe (O/S)	67-2675	1	Model: A7 and Star Twin
--	Exhaust pipe (O/S)	67-2720	1	Model: A10
36	Exhaust pipe (N/S)	67-2679	1	Model: A7 and Star Twin
--	Exhaust pipe (N/S)	67-2722	1	Model: A10
37	Rocker oil feed pipe union washer	15-203	2	Model: A7, A10 and Star Twin	$0.80	View
38	Cylinder and head bolt washer	2-2138	9	Model: A7, A10 and Star Twin	$1.71	View
39	Cylinder head bolt (medium)	67-258	2	Model: A7, A10 and Star Twin	$67.00	View
40	Rocker box joint washer (small)	67-277	2	Model: A7, A10 and Star Twin	$7.21	View
41	Rocker box joint washer	67-278	1	Model: A7, A10 and Star Twin	$6.00	View
42	Cylinder and head bolt	67-254	4	Model: A7, A10 and Star Twin	$67.00	View
43	Cylinder head with fixed fittings	67-380	1	Model: A7
--	Cylinder head with fixed fittings	67-524	1	Model: A7 and Star Twin
--	Cylinder head with fixed fittings	67-250	1	Model: A10
--	Cylinder head with fixed fittings (up to 1951)	67-24	1	Model: A7
--	Cylinder head with fixed fittings (up to 1951)	67-182	1	Model: Star Twin
44	Rocker box stud nut washer	36-382	2	Model: A7, A10 and Star Twin	$0.65	View
45	Rocker box stud nut	2-49	2	Model: A7, A10 and Star Twin	$2.65	View
46	Carburetter joint washer	65-1162	3	Model: A7	$109.00	View
--	Carburetter joint washer	65-1232	3	Model: A10 and Star Twin	$2.50	View
47	Carburetter drip shield	67-120	1	Model: A7 and A10	$42.00	View
--	Carburetter drip shield	67-527	1	Model: Star Twin
48	Carburetter fixing bolt washer	36-382	2	Model: A7, A10 and Star Twin	$0.65	View
49	Carburetter fixing bolt	2-129	2	Model: A7, A10 and Star Twin	$2.55	View
50	Gudgeon pin circlip	67-401	4	Model: A7 and Star Twin
--	Gudgeon pin circlip	66-954	4	Model: A10	$1.16	View
51	Gudgeon pin	67-392	2	Model: A7 and Star Twin
--	Gudgeon pin	65-440	2	Model: A10	$30.00	View
52	Gudgeon pin bush	67-393	2	Model: A7 and Star Twin	Original price was: $15.00.Current price is: $9.00.	View
--	Gudgeon pin bush	67-298	2	Model: A10	$15.00	View
53	Connecting rod with bushes, bolts and nuts (Gearside)	67-389	1	Model: A7 and Star Twin
--	Connecting rod with bushes, bolts and nuts (Gearside)	67-268	1	Model: A10
--	Connecting rod with bushes, bolts and nuts (Gearside) (up to 1951)	67-228	1	Model: A7 and Star Twin
--	Connecting rod with bushes, bolts and nuts (Gearside) (up to 1951)	67-268	1	Model: A10
54	Connecting rod big end bush (halves)	67-226	3	Model: A7, A10 and Star Twin
55	Crankshaft and flywheel assembled	67-384	1	Model: A7 and Star Twin
--	Crankshaft and flywheel assembled	67-664	1	Model: A10
--	Crankshaft and flywheel assembled (up to 1951)	67-615	1	Model: A7 and Star Twin
56	Flywheel bolt washer	15-5155	6	Model: A7, A10 and Star Twin	$0.85	View
57	Flywheel bolt nut	67-302	6	Model: A7, A10 and Star Twin
58	Crankshaft oil hole grub screw	65-615	2	Model: A7, A10 and Star Twin	$19.00	View
59	Crankshaft pinion gear key	15-40	1	Model: A7, A10 and Star Twin	$5.01	View
60	Crankcase and cylinder barrel stud nut	24-5160	9	Model: A7, A10 and Star Twin	$2.65	View
61	Crankcase and cylinder barrel stud washer	36-382	9	Model: A7, A10 and Star Twin	$0.65	View
62	Tappet securing screw	67-276	1	Model: A7, A10 and Star Twin
63	Cylinder barrel	67-378	1	Model: A7 and Star Twin
--	Cylinder barrel (up to 1951)	67-50	1	Model: A7 and Star Twin
--	Cylinder barrel	67-253	1	Model: A10
64	Tappet locating pin ball	3/16in.	1	Model: A7, A10 and Star Twin
65	Tappet locating pin	67-331	1	Model: A7, A10 and Star Twin
66	Valve push rod (exhaust)	67-398	2	Model: A7 and Star Twin
--	Valve push rod (exhaust)	67-362	2	Model: A10	Original price was: $105.00.Current price is: $104.50.	View
67	Valve push rod (inlet)	67-396	2	Model: A7 and Star Twin
--	Valve push rod (inlet)	67-360	2	Model: A10	Original price was: $105.00.Current price is: $104.50.	View
68	Crankshaft nut	67-643	1	Model: A7, A10 and Star Twin	$16.01	View
69	Crankshaft nut locking washer	67-644	1	Model: A7, A10 and Star Twin	$2.35	View
70	Crankshaft pump gear	67-642	1	Model: A7, A10 and Star Twin
71	Crankshaft pinion	67-339	1	Model: A7, A10 and Star Twin
72	Exhaust tappet	67-333	2	Model: A7, A10 and Star Twin
73	Inlet tappet	67-332	2	Model: A7, A10 and Star Twin
74	Crankshaft pump gear washer	67-645	1	Model: A7, A10 and Star Twin		View
75	Crankshaft bush (Gearside)	67-648	1	Model: A7, A10 and Star Twin
76	Connecting rod big end bolt washer	67-297	4	Model: A7, A10 and Star Twin
77	Connecting rod bolt split pin	35-702	4	Model: A7, A10 and Star Twin	$0.30	View
78	Connecting rod bolt nut	67-1034	4	Model: A7, A10 and Star Twin
79	Crankshaft shim (.005in.)	67-671	As reqd.	Model: A7, A10 and Star Twin	$22.00	View
--	Crankshaft shim (.010in.)	67-672	As reqd.	Model: A7, A10 and Star Twin	$22.00	View
80	Crankcase roller bearing	67-670	1	Model: A7, A10 and Star Twin	$72.00	View
81	Bearing shim (Drive side)	67-349	1	Model: A7, A10 and Star Twin
82	Engine sprocket distance piece (.005in.)	67-2056	As reqd.	Model: A7, A10 and Star Twin	$17.00	View
--	Engine sprocket distance piece (.010in.)	67-2057	As reqd.	Model: A7, A10 and Star Twin	$17.00	View
--	Engine sprocket distance piece (.030in.)	67-2058	As reqd.	Model: A7, A10 and Star Twin	$17.00	View
83	Flywheel bolt	67-301	6	Model: A7, A10 and Star Twin
84	Connecting rod complete with bushes, bolts and nuts (Drive side)	67-386	1	Model: A7 and Star Twin
--	Connecting rod complete with bushes, bolts and nuts (Drive side)	67-317	1	Model: A10
--	Connecting rod complete with bushes, bolts and nuts (Drive side) (up to 1951)	67-228	1	Model: A7 and Star Twin
--	Connecting rod complete with bushes, bolts and nuts (Drive side) (up to 1951)	67-268	1	Model: A10
85	Connecting rod big end bush (drilled)	67-320	1	Model: A7, A10 and Star Twin
86	Piston complete	67-460	2	Model: A7
--	Piston complete	67-533	2	Model: A7, Star Twin
--	Piston complete	67-423	2	Model: A10
--	Piston complete (up to 1951)	67-81	2	Model: A7
--	Piston complete (up to 1951)	67-103	2	Model: Star Twin
--	Piston complete (up to 1951)	67-304	2	Model: A10
87	Piston scraper ring	67-410	2	Model: A7 and Star Twin
--	Piston scraper ring	67-314	2	Model: A10
88	Compression ring	67-407	4	Model: A7 and Star Twin
--	Compression ring	67-311	4	Model: A10
89	Connecting rod bolt	67-1033	4	Model: A7, A10 and Star Twin
90	Cylinder and head bolt (short)	67-283	3	Model: A7, A10 and Star Twin	$67.00	View
91	Cylinder head joint washer	67-382	1	Model: A7 and Star Twin	Original price was: $66.00.Current price is: $46.20.	View
--	Cylinder head joint washer	67-255	1	Model: A10	$68.00	View
92	Exhaust pipe finned collar nut	21-5102	2	Model: A7, A10 and Star Twin		View
93	Exhaust pipe finned collar nut washer	29-541	2	Model: A7, A10 and Star Twin	$0.45	View
94	Exhaust pipe finned collar	67-2694	2	Model: A7, A10 and Star Twin
95	Exhaust pipe finned collar screw	21-6187	2	Model: A7, A10 and Star Twin
96	Cylinder barrel base washer	67-256	1	Model: A7, A10 and Star Twin	$8.86	View
97	Tappet retaining screw	67-299	2	Model: A7, A10 and Star Twin
98	Sparking plug washer	66-102	2	Model: A7, A10 and Star Twin
99	Sparking plug	65-114	2	Model: A7 and A10	$10.95	View
--	Sparking plug	67-529	2	Model: A7 and Star Twin
100	Sparking plug cover	65-213	2	Model: A7, A10 and Star Twin
101	Rocker box bolt washer	24-8784	1	Model: A7, A10 and Star Twin	$0.45	View
102	Rocker box bolt	15-1355	1	Model: A7, A10 and Star Twin	Original price was: $12.00.Current price is: $7.20.	View

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How diagrams work

1949-53 BSA A7/A10 Engine: Cylinder Head, Barrel, Valves & Crankshaft