Home>Make: BSA>1954-57 BSA A7/A10 (Plunger & Swinging Arm)>Engine, Primary Drive & Clutch>Engine: Cylinder Head, Barrel, Valves & Crankshaft

1954-57 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 (split) (halves)	29-410	8	Model: 'A' Group		View
2	Valve spring collar (top)	67-34	4	Model: 'A' Group	Original price was: $28.00.Current price is: $19.60.	View
3	Valve spring (inner)	67-440	4	Model: 'A' Group	$52.00	View
4	Valve spring (outer)	67-439	4	Model: 'A' Group	$52.00	View
5	Valve guide (inlet and exhaust)	67-31	4	Model: 'A' Group	$31.00	View
5	Valve guide (inlet and exhaust)	67-1110	4	Model: Shooting Star only
6	Valve spring cup (inlet and exhaust)	67-33	4	Model: 'A' Group	$17.00	View
7	Valve (inlet)	67-394	2	Model: A7
7	Valve (inlet)	67-323	2	Model: A10	$43.00	View
7	Valve (inlet)	67-531	2	Model: Star Twin and Shooting Star
--	Rocker box stud washer	36-382	4	Model: 'A' Group	$0.65	View
8	Rocker box inspection cover joint washer	67-279	2	Model: 'A' Group	$5.60	View
9	Rocker box inspection cover stud nut	65-2153	8	Model: 'A' Group	Original price was: $15.00.Current price is: $7.15.	View
10	Rocker box inspection cover nut washer	24-978	8	Model: 'A' Group	$0.30	View
11	Rocker box inspection cover	67-263	2	Model: 'A' Group
12	Rocker oil feed pipe banjo screw	65-317	2	Model: 'A' Group	$10.00	View
13	Rocker oil feed pipe complete	42-48	1	Model: 'A' Group (Swinging Arm)		View
13	Rocker oil feed pipe complete	67-450	1	Model: 'A' Group (Plunger type)
14	Rocker oil feed pipe union washer (top)	15-203	2	Model: 'A' Group	$0.80	View
15	Rocker box with studs	67-259	1	Model: 'A' Group (Plunger type)
16	Rocker box bolt washer	24-8784	4	Model: 'A' Group	$0.45	View
17	Rocker box bolt (long)	67-261	4	Model: 'A' Group (Plunger type)		View
18	Rocker box joint washer (small)	67-277	2	Model: 'A' Group	$7.21	View
19	Valve (exhaust)	67-395	2	Model: A7
19	Valve (exhaust)	67-324	2	Model: A10	$52.00	View
19	Valve (exhaust)	67-532	2	Model: Star Twin and Shooting Star
20	Valve rocker spindle	67-64	2	Model: 'A' Group
21	Valve rocker thrust washer	67-60	6	Model: 'A' Group	$1.90	View
22	Valve rocker spindle washer (spring)	67-62	4	Model: 'A' Group	$3.80	View
23	Exhaust valve rocker (N/S)	67-266	1	Model: 'A' Group
24	Rocker adjusting screw	67-56	4	Model: 'A' Group	$2.20	View
25	Valve rocker adjusting nut	24-563	4	Model: 'A' Group	$2.20	View
26	Exhaust valve rocker (O/S)	67-267	1	Model: 'A' Group
27	Valve rocker spindle nut	65-311	2	Model: 'A' Group		View
28	Valve rocker spindle washer	36-481	2	Model: 'A' Group	$2.31	View
29	Valve rocker thrust washer	67-61	2	Model: 'A' Group
30	Exhaust pipe (O/S)	67-2675	1	Model: A7 and Star Twin (Plunger)
30	Exhaust pipe (O/S)	67-2720	1	Model: A10 (Plunger)
30	Exhaust pipe (O/S)	42-2761	1	Model: A7 and Shooting Star (Swinging Arm)	Original price was: $296.00.Current price is: $240.00.	View
30	Exhaust pipe (O/S)	42-2766	1	Model: A10 Swinging Arm
31	Valve rocker (inlet) (O/S)	67-265	1	Model: 'A' Group
32	Exhaust pipe (N/S)	67-2679	1	Model: A7 and Star Twin (Plunger)
32	Exhaust pipe (N/S)	67-2722	1	Model: A10 (Plunger)
32	Exhaust pipe (N/S)	42-2763	1	Model: A7 and Shooting Star (Swinging Arm)	Original price was: $296.00.Current price is: $240.00.	View
32	Exhaust pipe (N/S)	42-2768	1	Model: A10 (Swinging Arm)
33	Valve rocker (inlet) (N/S)	67-264	1	Model: 'A' Group
34	Rocker box and steady stay stud	67-347	2	Model: 'A' Group (Plunger)
35	Engine steady stay	67-346	2	Model: 'A' Group (Plunger)
36	Rocker box steady stay stud nut	24-6040	2	Model: 'A' Group (Plunger)	$2.65	View
37	Rocker box steady stay nut washer	36-382	6	Model: 'A' Group (Plunger)	$0.65	View
38	Rocker box stud nut	2-49	2	Model: 'A' Group (Plunger)	$2.65	View
39	Cylinder and head bolt	67-254	4	Model: 'A' Group (Shooting Star exc.)	$67.00	View
39	Cylinder head bolt (medium)	67-1115	4	Model: Shooting Star
39	Cylinder head bolt (long)	67-1116	2	Model: Shooting Star
40	Cylinder head bolt (medium)	67-258	2	Model: 'A' Group (Shooting Star exc.)	$67.00	View
41	Cylinder head with fixed fittings	67-1061	1	Model: A7 (Plunger and Swinging Arm)
41	Cylinder head with fixed fittings	67-1065	1	Model: A10 (Plunger and Swinging Arm)
41	Cylinder head with fixed fittings	67-1063	1	Model: Star Twin
42	Exhaust pipe finned collar nut	21-5102	2	Model: 'A' Group		View
43	Exhaust pipe finned collar nut washer	29-541	2	Model: 'A' Group	$0.45	View
44	Exhaust pipe finned collar	67-2694	2	Model: 'A' Group
45	Exhaust pipe finned collar screw	21-6187	2	Model: 'A' Group
46	Sparking plug cover	67-985	2	Model: 'A' Group
47	Sparking plug (when high compression pistons are fitted)	67-529	1	Model: 'A' Group
47	Sparking plug	65-114	2	Model: A7 and A10	$10.95	View
47	Sparking plug	67-529	2	Model: A7 Star Twin
47	Sparking plug	65-1340	2	Model: Shooting Star
48	Sparking plug washer	66-102	2	Model: 'A' Group
49	Cylinder head joint washer	67-255	1	Model: 'A' Group	$68.00	View
50	Cylinder barrel base washer	67-256	1	Model: 'A' Group	$8.86	View
51	Cylinder head bolt washer	2-2138	9	Model: 'A' Group	$1.71	View
52	Cylinder head bolt (short)	67-283	3	Model: A7, A10 and Star Twin (Plunger)	$67.00	View
52	Cylinder head bolt (short)	67-283	3	Model: A7, A10 (Swinging Arm)	$67.00	View
52	Cylinder head bolt (short)	67-1114	3	Model: Shooting Star
53	Rocker box joint washer	67-278	1	Model: 'A' Group	$6.00	View
54	Rocker box stud	67-1245	2	Model: 'A' Group (Plunger)	$15.00	View
54	Rocker box stud	67-1245	4	Model: A7, A10 (Swinging Arm)	$15.00	View
55	Rocker box cover stud	67-343	1	Model: 'A' Group
56	Rocker box inspection cover stud	67-280	7	Model: 'A' Group	$4.50	View
57	Carburetter joint washer	65-1162	3	Model: A7	$109.00	View
57	Carburetter joint washer	65-1232	3	Model: A10, Star Twin (Plunger)	$2.50	View
57	Carburetter joint washer	65-1232	3	Model: A10, Shooting Star (Swinging Arm)	$2.50	View
58	Carburetter drip shield	67-120	1	Model: A7 and A10	$42.00	View
58	Carburetter drip shield	67-527	1	Model: Star Twin and Shooting Star
59	Carburetter drip shield fixing bolt washer	36-382	2	Model: 'A' Group	$0.65	View
60	Carburetter fixing bolt	2-129	2	Model: 'A' Group (Shooting Star excepted)	$2.55	View
61	Scraper ring	67-410	2	Model: A7 and Star Twin (Plunger)
61	Scraper ring	67-410	2	Model: A7 and Shooting Star (Swinging Arm)
61	Scraper ring	67-314	2	Model: A10
62	Compression ring	67-407	4	Model: A7 and Star Twin (Plunger)
62	Compression ring	67-407	4	Model: A7 and Shooting Star (Swinging Arm)
62	Compression ring	67-311	4	Model: A10
63	Gudgeon pin circlip	67-101	4	Model: A7 and Star Twin (Plunger)	$2.60	View
63	Gudgeon pin circlip	67-101	4	Model: A7 and Shooting Star (Swinging Arm)	$2.60	View
63	Gudgeon pin circlip	66-954	4	Model: A10	$1.16	View
64	Gudgeon pin	67-392	2	Model: A7 and Star Twin (Plunger)
64	Gudgeon pin	67-392	2	Model: A7 and Shooting Star (Swinging Arm)
64	Gudgeon pin	65-440	2	Model: A10	$30.00	View
65	Piston complete	67-460	2	Model: A7
65	Piston complete	67-423	2	Model: A10
65	Piston complete (7.25 to 1 C.R.)	67-533	2	Model: Star Twin and Shooting Star
66	Connecting rod with gudgeon pin bush, bolts and nuts (drive side)	67-1201	1	Model: A7, Star Twin and Shooting Star
66	Connecting rod with gudgeon pin bush, bolts and nuts (drive side)	67-1203	1	Model: A10
67	Connecting rod bolt	67-1059	4	Model: 'A' Group
68	Connecting rod big end bush (halves)	67-320	2	Model: 'A' Group
69	Crankshaft shim (.005")	67-671	As reqd.	Model: 'A' Group	$22.00	View
69	Crankshaft shim (.010")	67-672	As reqd.	Model: 'A' Group	$22.00	View
70	Crankcase roller bearing	67-670	1	Model: 'A' Group	$72.00	View
71	Engine sprocket alignment shim (.005")	67-2056	As reqd.	Model: 'A' Group	$17.00	View
71	Engine sprocket alignment shim (.010")	67-2057	As reqd.	Model: 'A' Group	$17.00	View
71	Engine sprocket alignment shim (.030")	67-2058	As reqd.	Model: 'A' Group	$17.00	View
72	Crankshaft oil seal	67-674	1	Model: 'A' Group	$7.50	View
73	Flywheel bolt	67-301	6	Model: 'A' Group
74	Big end bush (halves)	67-320	2	Model: 'A' Group
75	Connecting rod bolt split pin	35-702	4	Model: 'A' Group	$0.30	View
76	Connecting rod bolt nut	67-1034	4	Model: 'A' Group
77	Connecting rod bolt washer (plain)	67-297	4	Model: 'A' Group
78	Flywheel bolt nut washer	15-5155	6	Model: 'A' Group	$0.85	View
79	Flywheel bolt nut	67-302	6	Model: 'A' Group
80	Crankshaft nut	67-643	1	Model: 'A' Group	$16.01	View
81	Crankshaft nut locking washer	67-644	1	Model: 'A' Group	$2.35	View
82	Crankshaft pump gear	67-642	1	Model: 'A' Group
83	Crankshaft bush (gear side)	67-648	1	Model: 'A' Group
84	Crankshaft pinion gear key	15-40	1	Model: 'A' Group	$5.01	View
85	Crankshaft oil hole grub screw	65-615	2	Model: 'A' Group	$19.00	View
86	Crankshaft flywheel and connecting rod assy	67-383	1	Model: A7, Star Twin and Shooting Star
86	Crankshaft flywheel and connecting rod assy	67-663	1	Model: A10
87	Connecting rod with gudgeon pin bush, bolts and nuts (gear side)	67-1202	1	Model: A7, Star Twin and Shooting Star
87	Connecting rod with gudgeon pin bush, bolts and nuts (gear side)	67-1204	1	Model: A10
88	Gudgeon pin bush	67-393	2	Model: A7, Star Twin and Shooting Star	Original price was: $15.00.Current price is: $9.00.	View
88	Gudgeon pin bush	67-298	2	Model: A10	$15.00	View
89	Crankshaft pinion	67-339	1	Model: 'A' Group
90	Crankshaft pump gear washer	67-645	1	Model: 'A' Group		View
91	Crankcase and cylinder barrel stud nut	24-5160	9	Model: 'A' Group	$2.65	View
92	Crankcase and cylinder barrel stud washer	36-382	9	Model: 'A' Group	$0.65	View
93	Cylinder barrel	67-1070	1	Model: A7, Star Twin and Shooting Star
93	Cylinder barrel	67-1074	1	Model: A10
94	Tappet locating pin (exhaust)	67-331	1	Model: 'A' Group
95	Tappet locating pin ball	1-4676	1	Model: 'A' Group
96	Tappet securing screw	67-276	1	Model: 'A' Group
97	Tappet retaining screw	67-299	2	Model: 'A' Group
98	Inlet tappet	67-332	2	Model: 'A' Group
99	Exhaust tappet	67-333	2	Model: 'A' Group
100	Exhaust valve push rod	67-398	2	Model: A7, Star Twin and Shooting Star
100	Exhaust valve push rod	67-362	2	Model: A10	Original price was: $105.00.Current price is: $104.50.	View
101	Inlet valve push rod	67-396	2	Model: A7, Star Twin and Shooting Star
101	Inlet valve push rod	67-360	2	Model: A10	Original price was: $105.00.Current price is: $104.50.	View
102	Rocker box bolt	15-1355	1	Model: 'A' Group	Original price was: $12.00.Current price is: $7.20.	View
103	Rocker box and cylinder head stud nut (rear)	67-1118	2	Model: Shooting Star
104	Rocker box stud washer	29-7796	4	Model: Shooting Star	Original price was: $2.30.Current price is: $1.38.	View
105	Induction pipe joint washer	67-1120	2	Model: Shooting Star
106	Induction pipe	67-1112	1	Model: Shooting Star
107	Induction pipe stud washer	24-8784	4	Model: Shooting Star	$0.45	View
108	Induction pipe stud nut	2-49	4	Model: Shooting Star	$2.65	View
109	Induction pipe stud (bottom)	67-1119	2	Model: Shooting Star
110	Induction pipe stud (top)	67-1245	2	Model: Shooting Star	$15.00	View
111	Rocker box stud	67-1117	4	Model: Shooting Star
112	Engine steady bracket and frame bolt nut	24-6040	1	Model: 'A' Group Swinging Arm	$2.65	View
113	Engine steady bracket and frame bolt washer	24-8784	1	Model: 'A' Group Swinging Arm	$0.45	View
114	Engine steady stay	42-55	2	Model: 'A' Group Swinging Arm	Original price was: $8.10.Current price is: $5.67.	View
115	Engine steady bracket and frame bolt	15-1355	1	Model: 'A' Group Swinging Arm	Original price was: $12.00.Current price is: $7.20.	View
116	Engine steady bracket (L/H)	42-52	1	Model: 'A' Group Swinging Arm	Original price was: $29.00.Current price is: $20.30.	View
117	Engine steady bracket bolt	42-56	1	Model: 'A' Group Swinging Arm
118	Engine steady bracket distance piece	42-54	1	Model: 'A' Group Swinging Arm
119	Engine steady bracket bolt washer	24-8784	1	Model: 'A' Group Swinging Arm	$0.45	View
120	Engine steady bracket bolt nut	24-6040	1	Model: 'A' Group Swinging Arm	$2.65	View
121	Rocker box bolt (long)	42-62	4	Model: 'A' Group Swinging Arm	Original price was: $15.00.Current price is: $9.00.	View
122	Rocker box bolt washer	24-8784	5	Model: 'A' Group Swinging Arm	$0.45	View
123	Engine steady bracket (R/H)	42-53	1	Model: 'A' Group Swinging Arm	Original price was: $29.00.Current price is: $20.30.	View
124	Engine steady bracket and rocker box washer	2-923	4	Model: 'A' Group Swinging Arm	$0.45	View
125	Rocker box with studs	42-63	1	Model: 'A' Group Swinging Arm
126	Cylinder head with fixed fittings	67-1101	1	Model: Shooting Star
127	Piston complete (8 to 1 C.R.)	67-566	2	Model: Shooting Star

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How diagrams work

1954-57 BSA A7/A10 Engine: Cylinder Head, Barrel, Valves & Crankshaft