BRAKE, CLUTCH, MASTER & SLAVE CYLINDERS

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

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	GRK1026	REPAIR KIT, BRAKE MASTER CYLINDER, 0.75" BORE	1	changed during production	CHF 18.05
1	GRK1009	SEAL KIT (GMC150) Z SPEC ALSO AVAILABLE LK10959 NL	1	changed during production	availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
2	GSM125	BRAKE SERVO ASSY INDIRECT	1	Servo	CHF 400.95
2	CRC2131A	VACUUM HOSE 1 METRE LONG	1	Vaccum Hose per metre	CHF 21.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
3	GMC150	MASTER CYLINDER BRAKE	1		CHF 112.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
4	233220A	COPPER WASHER 3/8ID 5/8 OD	3	Servo & master cylinders	CHF 2.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
5	7H7851	CONNECTOR UNION	2	Servo & brake master cylinder	CHF 34.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
6	3H550	COPPER WASHER 7/16X0.7	1		CHF 1.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
7	C5192A	3/8 BRAKE BANJO BOLT	2	Master cylinders	CHF 23.05

Ill.no.	Partno.	Part	Quantity required	Info	Price
8	BHA4310	BANJO UNION	1	Clutch master cylinder	CHF 38.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
9	AHH8556	COWL NCA	1		availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
10	AHH6156	P/BOX SEAL TOP 62-77	1		CHF 2.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
11	AHH7052	P/BOX SEAL BOT 62-74	1	Chrome bumper	CHF 3.95
11	BHH1608	USE AHH7052	1	Rubber bumper

Ill.no.	Partno.	Part	Quantity required	Info	Price
12	AHH8522	BRAKE PEDAL	1		availability request
12	AHH6154	CLUTCH PEDAL	1		availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
13	AAA4129	BUSH PB BRAKE/CLUTCH	2		CHF 12.05

Ill.no.	Partno.	Part	Quantity required	Info	Price
14	AAA1628	SPRING RETURN PEDAL	2		CHF 3.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
15	AHH5100	PEDAL RUBBER MGA&B	2		CHF 2.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
16	CLZ514	CLEVIS PIN5/16 X0.875	2		CHF 2.05

Ill.no.	Partno.	Part	Quantity required	Info	Price
17	AHH8421	PEDALBOX ASSY NCA	1		availability request

Ill.no.	Partno.	Part	Quantity required	Info	Price
18	513123A	FILLER CAP - M/CYL	2		CHF 10.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
19	GMC1011	MASTER CYLINDER CLUTCH MGB V8	1		CHF 122.35

Ill.no.	Partno.	Part	Quantity required	Info	Price
20	GRK3008	REPAIR KIT, CLUTCH MASTER CYLINDER	1		CHF 36.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
21	37H8090	USE 17H7985	1
21	17H7985	M/CYL PUSH ROD	1		CHF 33.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
22	BHA4675	BRAKE LIGHT SWITCH	1		CHF 24.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
23	NT606041	NUT 3/8 UNF THIN	1		CHF 1.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
24	GSY113	SLAVE CYLINDER, CLUTCH S&M V8	1		CHF 95.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
25	GRK4005	REPAIR KIT, CLUTCH SLAVE CYLINDER S&M 1275 BV8	1		CHF 27.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
26	3H2428	BLEED NIPPLE MGA S&M, 3/8 UNF	1		CHF 3.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
27	13H3655	PUSH ROD 1275 CLUTCH	1		CHF 16.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
28	2K5622	CLEVIS PIN	1		CHF 4.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
29	GVP1001	CLUTCH HOSE	1		CHF 24.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
30	2K8686	NUT 15/16 BRAKE HOSE	1		CHF 3.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
31	3H2424	UNION 3WAY B/PIPE	2		CHF 17.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
32	GBH159	BRAKE HOSE, REAR	1		CHF 18.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
33	BCA4002	UNION 2 FEMALE END	1		CHF 9.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
34	TM606031	UNION MALE 3/16" UNF PIPE	a/r		CHF 2.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
35	TN606031	FEMALE PIPE NUT, STEEL 3/16	a/r		CHF 4.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
36	GBH158	BRAKE HOSE	2	to GD2DI2707	CHF 23.65
36	GBH172	BRAKE HOSE, FRONT	2	from GD2DI2707	CHF 17.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
37	233220A	COPPER WASHER 3/8ID 5/8 OD	3		CHF 2.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
38	NT606041	NUT 3/8 UNF THIN	3		CHF 1.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
39	1G9198	BRAKE PIPE LOCKPLATE	3		CHF 8.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	GRK1026	REPAIR KIT, BRAKE MASTER CYLINDER, 0.75" BORE	1	changed during production	CHF 18.05
1	GRK1009	SEAL KIT (GMC150) Z SPEC ALSO AVAILABLE LK10959 NL	1	changed during production	availability request
2	GSM125	BRAKE SERVO ASSY INDIRECT	1	Servo	CHF 400.95
2	CRC2131A	VACUUM HOSE 1 METRE LONG	1	Vaccum Hose per metre	CHF 21.55
3	GMC150	MASTER CYLINDER BRAKE	1		CHF 112.20
4	233220A	COPPER WASHER 3/8ID 5/8 OD	3	Servo & master cylinders	CHF 2.45
5	7H7851	CONNECTOR UNION	2	Servo & brake master cylinder	CHF 34.45
6	3H550	COPPER WASHER 7/16X0.7	1		CHF 1.75
7	C5192A	3/8 BRAKE BANJO BOLT	2	Master cylinders	CHF 23.05
8	BHA4310	BANJO UNION	1	Clutch master cylinder	CHF 38.60
9	AHH8556	COWL NCA	1		availability request
10	AHH6156	P/BOX SEAL TOP 62-77	1		CHF 2.25
11	AHH7052	P/BOX SEAL BOT 62-74	1	Chrome bumper	CHF 3.95
11	BHH1608	USE AHH7052	1	Rubber bumper
12	AHH8522	BRAKE PEDAL	1		availability request
12	AHH6154	CLUTCH PEDAL	1		availability request
13	AAA4129	BUSH PB BRAKE/CLUTCH	2		CHF 12.05
14	AAA1628	SPRING RETURN PEDAL	2		CHF 3.30
15	AHH5100	PEDAL RUBBER MGA&B	2		CHF 2.90
16	CLZ514	CLEVIS PIN5/16 X0.875	2		CHF 2.05
17	AHH8421	PEDALBOX ASSY NCA	1		availability request
18	513123A	FILLER CAP - M/CYL	2		CHF 10.40
19	GMC1011	MASTER CYLINDER CLUTCH MGB V8	1		CHF 122.35
20	GRK3008	REPAIR KIT, CLUTCH MASTER CYLINDER	1		CHF 36.55
21	37H8090	USE 17H7985	1
21	17H7985	M/CYL PUSH ROD	1		CHF 33.55
22	BHA4675	BRAKE LIGHT SWITCH	1		CHF 24.60
23	NT606041	NUT 3/8 UNF THIN	1		CHF 1.55
24	GSY113	SLAVE CYLINDER, CLUTCH S&M V8	1		CHF 95.00
25	GRK4005	REPAIR KIT, CLUTCH SLAVE CYLINDER S&M 1275 BV8	1		CHF 27.40
26	3H2428	BLEED NIPPLE MGA S&M, 3/8 UNF	1		CHF 3.60
27	13H3655	PUSH ROD 1275 CLUTCH	1		CHF 16.80
28	2K5622	CLEVIS PIN	1		CHF 4.30
29	GVP1001	CLUTCH HOSE	1		CHF 24.20
30	2K8686	NUT 15/16 BRAKE HOSE	1		CHF 3.75
31	3H2424	UNION 3WAY B/PIPE	2		CHF 17.50
32	GBH159	BRAKE HOSE, REAR	1		CHF 18.45
33	BCA4002	UNION 2 FEMALE END	1		CHF 9.45
34	TM606031	UNION MALE 3/16" UNF PIPE	a/r		CHF 2.60
35	TN606031	FEMALE PIPE NUT, STEEL 3/16	a/r		CHF 4.70
36	GBH158	BRAKE HOSE	2	to GD2DI2707	CHF 23.65
36	GBH172	BRAKE HOSE, FRONT	2	from GD2DI2707	CHF 17.70
37	233220A	COPPER WASHER 3/8ID 5/8 OD	3		CHF 2.45
38	NT606041	NUT 3/8 UNF THIN	3		CHF 1.55
39	1G9198	BRAKE PIPE LOCKPLATE	3		CHF 8.55

Orders will be shipped not before Monday 13th May 2024, thank you for your patience.

BRAKE, CLUTCH, MASTER & SLAVE CYLINDERS