3-SYNCHRO - OVERDRIVE - Your Shop for British Classic Cars

CAR IDENTIFICATION MG B

When ordering parts it is essential that your car is identified exactly, by model year and serial number. Since many part
changes were made during model years, the car number, engine number and body number provide the only positive
identification. Quite often a car’s title will not show the correct model year. Before ordering parts, please use the space
provided below to copy the applicable numbers from your car. Use of these numbers is the best way to ensure that you
order and receive the correct parts. Wherever possible, we have listed part applications by car number (c). In some cases,
we had to use the engine numbers (e) or body numbers (b). Commission numbers, as used from 1968, are of little
significance and are not used for reference purposes. Where we use years, they are model years, not build dates. For
the sake of simplicity, we have deleted all alpha-numeric prefixes from change points found in our application columns.
While these letters are helpful in pinpointing certain production features, they do not affect the parts’ applications as listed.
Example: Car number GHN5/ UB/234567 is shown as (c) 234567. For more information on these numbers and years,
see the production data in the chart below.

Car Number

The Car Number for cars from 1963-69 is stamped on a plate secured to the right hand wing valance forward of the radiator.

The Car Number for cars from 1970 on is stamped on a plate secured to the left hand door post, and to a plate on top of the fascia.

Body Number

The Body Number for early chrome-bumpered cars is stamped on a plate on the left front valance behind the radiator
diaphragm as illustrated, or in some cases, in front of the radiator diaphragm.

Engine Number

The Engine Number is stamped on a plate secured to the right hand side of the cylinder block.

Commission Number

The Commission Number is stamped on a plate secured to the bonnet lock platform.

Gearbox Number

The Gearbox Number is stamped on top of the gearbox casing adjacent to the dipstick.

Power Unit Identification Serial Number Prefix Code (not V8)

Vehicle Identification Serial Number Prefix Letter Code (not V8)

Vehicle Identification Prefix Letter Code


* "1974-1/2" - The so-called "1974-1/2" model year began with roadster number 360301 and GT no. 361001 in September, 1974 and continued to the beginning of the 1975 model year.
** Calendar Year build dates are of historical significance only.
@ Commission Numbers were not used prior to 1968 model year.
# These numbers are approximate.
H 18GA engine used from car #31021 thru 48765.
Model Year	1st Month of Prod.		Car #First RD/GT	Car #First RD/GT Calendar Year**	Engine #First RD/GT	Commission #First RD/GT	Body # First RD/GT
1962	5/62	RD	-	GHN3/L/101	(3-main engine)	-	-
1963	1/63	RD	-	GHN3/L/4619	18G/UH/101 (3-main engine)	@	MGB/101
1964	8/63	RD	GHN3/L/19586	GHN3/L/27278	N/A H (3-main engine)	@	MGB/26813
1965	10/64	RD	GHN3/L/48766	GHN3/L/53635	18GB/UH/101 (first 5-main engine)	@	N/A
1965	10/64	GT	-	GHD3/L/71933	18GB/UH (con't.)	-	-
1966	10/65	RD	N/A	GHN3/L/75243	18GB/UH (con't.)	@	N/A
1966	10/65	GT	GHD3/L/71933	N/A	18GB/UH/30038	@	GBD/101
1967	11/66	RD	GHN3/L/108039	-	18GB/UH (con't.)	@	N/A
1967	11/66	GT	N/A	GHD3/L/109804	18GB/UH (con't.)	@	N/A
1968	10/67	RD	GHN4/U/138401	N/A	18GF/WE/H101	GU23N/101F	MGBU/101
1968	10/67	GT	GHD4/U/139472	N/A	18GF/WE/H101	GU23D/101P	GBUD/500101
1969	10/68	RD	GHN4/U/158371	GHN4/L/159806	18GH/WE/H101	G23N/18164#	MGB/14588#
1969	10/68	GT	GUD4/U/158233	GHD4/L/162552	18GH/WE/H101	N/A	N/A
1970	10/69	RD	GHN5/UA/187211	GHN5/UA/196222	18GH/-/22209	G23N/31862#	MGBU/27359
1970	10/69	GT	GHD5/UA/187841	GHD5/UA/194552	18GH/-/22209	G23D/18042	GBUD/510630
1971	9/70	RD	GHN5/UB/219021	GHN5/UB/232765	18GK/WE/H101	N/A	MGBU/300101
1971	9/70	GT	GHD5/UB/219355	GHD5/UB/233500	18GK/WE/H101	G23D/029048	GBUD/520235
1972	5/71	RD	GHN5/UC/258001	GHN5/UC/268635	18V/584Z/L101 (non O/D) 18V/585Z/L101 (O/D)	N/A	MGBU/400101
1972	5/71	GT	GHD5/UC/258004	GHD5/UC/269303	18V/585Z/L101 (O/D) 18V/672Z/L101 (non O/D)	G23D/047002	GBUD/620101
1973	8/72	RD	GHN5/UD/294251	GHN5/UD/307772	18V/63Z/L101 (O/D)	G23N/62557#	MGBU/500101
1973	8/72	GT	GHD5/UD/296001	GHD5/UD/31600	18V/672Z/L101 (non O/D) 18V/673/L101 (O/D)	N/A	GBUD/720101
1974*	8/73	RD	GHN5/UE/328101	GHN5/UE/338790	18V/672Z/L14891 (non O/D)# 18V/673Z/l14891 (O/D)#	G23N/86226#	MGBU/600101
1974*	8/73	GT	GHD5/UE/328801	GHD5/UE/338560	18V/672Z/L13234 (non O/D)#	G23D/70589	GBUD/820101
1974	9/74	1. Rubberbumper Model Roadster - from Chassis-No. 360301
1974	9/74	1. Chromebumper Model GT - from Chassis-No. 361001
1975	12/74	RD	GHN5/UF/368082 (N.Amer.) GHN5/UF/367901 (non-N.A.)	GHN5/UF/368090	18V/797AE/L101 (non O/D) 18V/798AE/L101 (O/D)	G23N/115009#	GU23T/7707
1975	12/74	GT	N/A	GHD5/UF/369101	N/A	N/A	N/A
1976	9/75	RD	GHN5/UG/386601	GHN5/UG/393763	18V/801AE/L101 (non O/D) 18V/802AE/L101 (O/D)	G23N/129440#	GU23T/50101
1976	9/75	GT	N/A	GHD5/UG/394665	N/A	N/A	N/A
1977	6/76	RD	GHN5/UH/410001	GHN5//UH/424748	18V/883AE/L101 (non O/D) 18V/884AE/L101 (O/D)	N/A	GU23T/760000
1977	6/76	GT	GHD5/UH/410351	GHD5/UH/422730	N/A	N/A	N/A
1978	9/77	RD	GHN5/UJ/447001	GHN5/UJ/455743	N/A	N/A	GU23T/860000
1978	9/77	GT	N/A	GHD5/UJ/455283	N/A	N/A	N/A
1979	6/78	RD	GHN5/UL/471001	GHN5/UL/485179	18V/883AEL/29033 (non O/D) #	N/A	GU23T/960000
1979	6/78	GT	N/A	GHD5/UL/483812	N/A	N/A	N/A
1980	6/79	RD	GVVDJ2AG/501001	GVVDJ2AIG/507309	18V/883AEL/43540 (non O/D) #	N/A	GU23T /984080#
1980	6/79	GT	N/A	GVGEJIAG/507309	N/A	N/A	N/A

3-SYNCHRO - OVERDRIVE

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	22H209R	GEARBOX B 62-5 O/D	1	18G-18GA	availability request (add quantity to basket, offer follows)
1	22H842E	GEARBOX MGB OVERDRIVE 65-66	1	18GB-18GD 74528	availability request (add quantity to basket, offer follows)
1	22H539R	GEARBOX 3SYN 5B OD	1	18GB 74529 on	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
2	1G3802	GEARBOX DIPSTICK	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
3	21H6060	VALVE, BREATHER REAR AXLE CASING	1		CHF 14.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
4	ACA4010	GREASE CAP / CORE PLUG	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
5	BH605101	BOLT 5/16UNFX1 1/4	1	short	CHF 3.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
6	BH605151	BOLT 5/16UNFX1 7/8	2	intermediate	CHF 1.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
7	BH605201	BOLT 5/16UNF X 2 1/2	4	long	CHF 4.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
8	GHF332	WASHER SPRING 5/16	7		CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
9	FNZ505	NUT 5/16 UNF HT	7		CHF 2.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
10	2K5830	PLUG OIL DRAIN	1		CHF 16.80
10	2K5830X	PLUG OIL DRAIN	1	magnetic	CHF 42.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
11	TE505111	STUD, 5/16" UNC/UNF X 1.3/8"	8		CHF 5.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
12	GHF332	WASHER SPRING 5/16	8		CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
13	FNZ505	NUT 5/16 UNF HT	8		CHF 2.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
14	1G3658	GASKET GEARBOX SIDE COVER	1		CHF 2.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
15	53K162	SCREW COUNTERSUNK 5/16" UNC	3		CHF 6.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
16	6K9012	STAR WASHER 5/16DISH	3		CHF 1.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
17	GHF163	SCREW 5/16 UNC X 1IN	7		CHF 1.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
18	GHF301	WASHER 5/16 X 5/8 M8	1	fitted to rear screw	CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
19	2K4958	WASHER FIBRE 5/16" ID	1	fitted to rear screw	CHF 1.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
20	GHF332	WASHER SPRING 5/16	6		CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
21	1G3666	GASKET GEARBOX FRONT COVER	1		CHF 2.05

Ill.no.	Partno.	Part	Quantity required	Info	Price
22	88G545	SEAL FRONT GEARBOX MGB	1		CHF 10.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
23	48G266	FRONT COVER GEARBOX	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
24	53K2172	STUD FRONT COVER	7		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
25	GHF332	WASHER SPRING 5/16	7		CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
26	GHF201	NUT 5/16 UNF	7		CHF 0.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
27	1G3706	GEARKNOB	1		CHF 36.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
28	FNP205	L/NUT-GEARKNOB A&B>67	1		CHF 4.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
29	22H251	GEAR LEVER	1		CHF 119.35

Ill.no.	Partno.	Part	Quantity required	Info	Price
30	1H3087	CIRCLIP LOWER GEAR LEVER	1		CHF 31.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
31	1G3927	GEARLEVER RETAINER	1		CHF 32.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
32	11G3144	SPRING, ANTI-RATTLE	1		CHF 61.35

Ill.no.	Partno.	Part	Quantity required	Info	Price
33	1H3101	LOCK PIN	2		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
34	GHF331	WASHER SPRING 1/4	2		CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
35	ACA4010	GREASE CAP / CORE PLUG	2		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
36	22H206	BRACKET	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
37	GHF117	SCREW 1/4UNF X 3/4	2		CHF 1.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
38	GHF101	SCREW 1/4 UNF X 1IN	2		CHF 0.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
39	GHF331	WASHER SPRING 1/4	4		CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
40	BH505201	BOLT 5/16UNCX2 1/2	2		CHF 3.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
41	GHF163	SCREW 5/16 UNC X 1IN	4		CHF 1.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
42	GHF332	WASHER SPRING 5/16	6		CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
43	22H168	GASKET, REMOTE GEARBOX	1		CHF 8.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
44	AEG3101	DOWEL	2		CHF 3.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
45	BAU1074A	USE BAU1074Z	1/2	reverse lights fitted from 18GBRUH 54406
45	BAU1074Z	SWITCH REVERSE/INHIB	a/r	reverse lights fitted from 18GBRUH 54406	CHF 20.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
46	1B3664	WASHER FIBRE 5/8"	a/r	reverse lights fitted from 18GBRUH 54406	CHF 0.30
NI	1H3026	PLUG BLANKING	1	use when reverse light switch not fitted	availability request (add quantity to basket, offer follows)
NI	1B3664	WASHER FIBRE 5/8"	1	use when reverse light switch not fitted	CHF 0.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
47	22B56	FORK, CLUTCH RELEASE	1		CHF 229.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
48	11G3195	BUSH CLUTCH FORK	1		CHF 3.35

Ill.no.	Partno.	Part	Quantity required	Info	Price
49	11G3196	PIVOTBOLT CLUTCH ARM	1		CHF 15.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
50	12H2178	WASHER FLAT 3/4 OD	1		CHF 2.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
51	GHF223	NUT 3/8 UNF NYLOC	1		CHF 0.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
52	22H1337	GAITER CLUTCH FORK, RUBBER	1		CHF 6.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
53	AHH7170	SEAL GEAR LEVER (62-67)	1		CHF 14.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
54	AHH6486	BEZEL GEAR LEVER GAITER	1		CHF 32.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
55	AD610063	SCREW CRHCSK 10X 3/4	4		CHF 3.35

Ill.no.	Partno.	Part	Quantity required	Info	Price
56	1G3712	GASKET, GEARBOX EXTENSION	1		CHF 2.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
57	37H1901	GASKET ADAPTER TO OVERDRIVE	1		CHF 4.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
58	BGK102	GASKET SET GEARBOX 3S+OD	1		CHF 25.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
60	MBK101	BOLT KIT, ENGINE TO GEARBOX 3-SYNCHRO	1	contains 4, 5, 6, 7 & 8	CHF 23.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	22H209R	GEARBOX B 62-5 O/D	1	18G-18GA	availability request (add quantity to basket, offer follows)
1	22H842E	GEARBOX MGB OVERDRIVE 65-66	1	18GB-18GD 74528	availability request (add quantity to basket, offer follows)
1	22H539R	GEARBOX 3SYN 5B OD	1	18GB 74529 on	availability request (add quantity to basket, offer follows)
2	1G3802	GEARBOX DIPSTICK	1		availability request (add quantity to basket, offer follows)
3	21H6060	VALVE, BREATHER REAR AXLE CASING	1		CHF 14.00
4	ACA4010	GREASE CAP / CORE PLUG	1		availability request (add quantity to basket, offer follows)
5	BH605101	BOLT 5/16UNFX1 1/4	1	short	CHF 3.95
6	BH605151	BOLT 5/16UNFX1 7/8	2	intermediate	CHF 1.40
7	BH605201	BOLT 5/16UNF X 2 1/2	4	long	CHF 4.30
8	GHF332	WASHER SPRING 5/16	7		CHF 0.30
9	FNZ505	NUT 5/16 UNF HT	7		CHF 2.65
10	2K5830	PLUG OIL DRAIN	1		CHF 16.80
10	2K5830X	PLUG OIL DRAIN	1	magnetic	CHF 42.95
11	TE505111	STUD, 5/16" UNC/UNF X 1.3/8"	8		CHF 5.50
12	GHF332	WASHER SPRING 5/16	8		CHF 0.30
13	FNZ505	NUT 5/16 UNF HT	8		CHF 2.65
14	1G3658	GASKET GEARBOX SIDE COVER	1		CHF 2.55
15	53K162	SCREW COUNTERSUNK 5/16" UNC	3		CHF 6.65
16	6K9012	STAR WASHER 5/16DISH	3		CHF 1.90
17	GHF163	SCREW 5/16 UNC X 1IN	7		CHF 1.45
18	GHF301	WASHER 5/16 X 5/8 M8	1	fitted to rear screw	CHF 0.55
19	2K4958	WASHER FIBRE 5/16" ID	1	fitted to rear screw	CHF 1.45
20	GHF332	WASHER SPRING 5/16	6		CHF 0.30
21	1G3666	GASKET GEARBOX FRONT COVER	1		CHF 2.05
22	88G545	SEAL FRONT GEARBOX MGB	1		CHF 10.25
23	48G266	FRONT COVER GEARBOX	1		availability request (add quantity to basket, offer follows)
24	53K2172	STUD FRONT COVER	7		availability request (add quantity to basket, offer follows)
25	GHF332	WASHER SPRING 5/16	7		CHF 0.30
26	GHF201	NUT 5/16 UNF	7		CHF 0.40
27	1G3706	GEARKNOB	1		CHF 36.75
28	FNP205	L/NUT-GEARKNOB A&B>67	1		CHF 4.60
29	22H251	GEAR LEVER	1		CHF 119.35
30	1H3087	CIRCLIP LOWER GEAR LEVER	1		CHF 31.65
31	1G3927	GEARLEVER RETAINER	1		CHF 32.00
32	11G3144	SPRING, ANTI-RATTLE	1		CHF 61.35
33	1H3101	LOCK PIN	2		availability request (add quantity to basket, offer follows)
34	GHF331	WASHER SPRING 1/4	2		CHF 0.55
35	ACA4010	GREASE CAP / CORE PLUG	2		availability request (add quantity to basket, offer follows)
36	22H206	BRACKET	1		availability request (add quantity to basket, offer follows)
37	GHF117	SCREW 1/4UNF X 3/4	2		CHF 1.55
38	GHF101	SCREW 1/4 UNF X 1IN	2		CHF 0.95
39	GHF331	WASHER SPRING 1/4	4		CHF 0.55
40	BH505201	BOLT 5/16UNCX2 1/2	2		CHF 3.30
41	GHF163	SCREW 5/16 UNC X 1IN	4		CHF 1.45
42	GHF332	WASHER SPRING 5/16	6		CHF 0.30
43	22H168	GASKET, REMOTE GEARBOX	1		CHF 8.55
44	AEG3101	DOWEL	2		CHF 3.60
45	BAU1074A	USE BAU1074Z	1/2	reverse lights fitted from 18GBRUH 54406
45	BAU1074Z	SWITCH REVERSE/INHIB	a/r	reverse lights fitted from 18GBRUH 54406	CHF 20.90
46	1B3664	WASHER FIBRE 5/8"	a/r	reverse lights fitted from 18GBRUH 54406	CHF 0.30
NI	1H3026	PLUG BLANKING	1	use when reverse light switch not fitted	availability request (add quantity to basket, offer follows)
NI	1B3664	WASHER FIBRE 5/8"	1	use when reverse light switch not fitted	CHF 0.30
47	22B56	FORK, CLUTCH RELEASE	1		CHF 229.40
48	11G3195	BUSH CLUTCH FORK	1		CHF 3.35
49	11G3196	PIVOTBOLT CLUTCH ARM	1		CHF 15.50
50	12H2178	WASHER FLAT 3/4 OD	1		CHF 2.25
51	GHF223	NUT 3/8 UNF NYLOC	1		CHF 0.90
52	22H1337	GAITER CLUTCH FORK, RUBBER	1		CHF 6.70
53	AHH7170	SEAL GEAR LEVER (62-67)	1		CHF 14.95
54	AHH6486	BEZEL GEAR LEVER GAITER	1		CHF 32.90
55	AD610063	SCREW CRHCSK 10X 3/4	4		CHF 3.35
56	1G3712	GASKET, GEARBOX EXTENSION	1		CHF 2.45
57	37H1901	GASKET ADAPTER TO OVERDRIVE	1		CHF 4.90
58	BGK102	GASKET SET GEARBOX 3S+OD	1		CHF 25.95
60	MBK101	BOLT KIT, ENGINE TO GEARBOX 3-SYNCHRO	1	contains 4, 5, 6, 7 & 8	CHF 23.45