BRAKE AND CLUTCH MASTER CYLINDER

CAR IDENTIFICATION MG A

Year	Model	Numbers manufactured
September 1955 to May 1959	MGA 1500cc	10101 to 68,850
September 1958 to June 1960	MGA Twin Cam	501 to 2611
May 1959 to April 1961	MGA 1600cc	68,851 to 100,351
April 1961 to June 1962	MGA 1600cc MkII	100,352 to 109,070

BMC 'B' Series Engine Use(1953 to 1981)

Model	cc	Prefix	BHP/RPM	Torque
M.G. MGA	1489	BP15GB,15GB	68/5200	82
M.G. MGA	1489	15GD	72/5500	85
M.G. MGA 1600	1588	16GA	80/5600	87
MGA Twin Cam	1588	BC16GB	108/6700
M.G. MGA 1600 Mk2	1622	16GC	90/5500 97

MGA Serial Numbers

Engine Number

The engine number is stamped on a plate secured to the righthand side of the cylinder block...or it is stamped on a plate secured to the rear of the engine behind the cylinder block. (Twin Cam)

Car Number

The car number is stamped on a plate secured to the top lefthand side of the dash panel

Gearbox Number

The gearbox number is stamped on the top of the gearbox casing adjacent to the dipstick

Body Number

The body number is stamped on a plate secured to the bulkhead between the righthand bonnet hinge and the fuse block.

Rear Axle Number

The rear axle No is stamped on the front of the axle tube on the LH side next to the spring seat.

Identifying the MGA

There are only five variations of the MGA. The 1500cc, 1600cc, MkII, Twin Cam and 1600cc MkII De luxe. The Coupés were a variation of the Roadster and were not differentiated by the factory numbering system as to body style. The Twin Cam, a major undertaking at the time of its introduction, was identified separately while the De luxe, the most elusive of MGA models, was not distinctly identified. There are reliable production figures for all models except the De luxe.

The three major MGA models may be readily identified by their tail-lamp and grille configurations as well as their engine displacement.

A 1500cc will have the familiar single Lucas tail lamp, the flush style grille and no shroud or boot lid emblems. Four-wheel drum brakes were fitted to this model only.

Very early 1500ccs had different style gauge faces, an example of which can be found in the factory service manual and drivers handbook illustrations. The door rails on the first few cars were entirely of wood as were the cockpit rear corners. There are few of these seen today. The 1500's did not have the starter hump on the passenger toe board or the windscreen mounted hood clamp. The turn indicators were switched through a relay.

1600cc is differentiated by the dual rear lamp with separate turn lamps, larger round parking lamps with flat lenses and a '1600cc' marker on the cowl and rear boot lid. Disc brakes on the front greatly improved stopping power. The starter position was moved with the resulting hump on the passenger toe board.

The 1600cc MkII received the closest thing to a face lift an MGA ever got. The famous flat grille was replaced with the 'pre-crushed' version. The MkI Mini rear lamps appeared horizontally below the boot lid and the vinyl covered dash and cowl and 1600cc MkII badges were added. The chrome trim and dash escutcheon from the Coupé finished off the dash. Seat belt anchors were added to the chassis. 1600cc MkII De luxe cars used the Twin Cam chassis with the push rod 1622cc engine. Check all parts carefully, as MGA's have not always enjoyed the respect they do now, and parts have been freely exchanged with little regard for originality. When re-wiring your car, be sure to order the loom that fits your body type, not engine type.

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	GMC109	MASTER CYLINDER, BRAKE & CLUTCH, 7/8", AP BRAKING	1	1500cc	CHF 282.15
1	17H7705	BRAKE MASTER CYLINDER 7/8", OE QUALITY, AP	1	1600cc & MkII	CHF 346.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
2	8G8224	REPAIR KIT, BRAKE MASTER CYLINDER 0.875 (7/8") BORE	1		CHF 116.80
2	8G8224Z	REPAIR KIT, BRAKE MASTER CYLINDER 7/8", AFTERMARKET	1	aftermarket	CHF 23.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
3	17H4708	WASHER, ORIGINAL FILLER CAP	1		CHF 11.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
4	513123A	CAP, MASTER CYLINDER, PLASTIC REPLACEMENT	1		CHF 10.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
5	AAA4758	SCREW M/CYLINDER	7		CHF 4.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
8	AJH5085	COVER MASTER CYLINDER GMC109 GMC112 COVER REMOVED	1	1500cc	CHF 32.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
9	17H7702	COVER, MASTER CYLINDER	1	1600cc & MkII	CHF 73.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
10	37H2496	GASKET TOP COVER	1		CHF 2.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
11	AJH5083	SPRING MASTER CYLINDER	2		CHF 6.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
12	7H7925	PISTON	2		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
13	7H7488	VALVE BODY NCA	1	brake side only	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
15	AAA4757	GASKET SIDE (M/CYL)	1		CHF 5.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
16	AAA4756	PLATE FRONT	1		availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
20	21K8564	ADAPTOR, SLAVE CYLINDER PIPE	1	for clutch pipe	CHF 19.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
21	233220A	COPPER WASHER 3/8ID 5/8 OD	1	for clutch pipe	CHF 1.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
22	3H550	COPPER WASHER 7/16" X 0.7"	1	for clutch pipe	CHF 1.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
23	3H544	BANJO UNION	1	for clutch pipe	CHF 46.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
24	7H7456	COPPER WASHER 1/4" BSP	1	for clutch pipe	CHF 4.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
25	11K8276	BANJO BOLT	1	for clutch pipe	CHF 18.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
26	BCA4046	PUSH ROD MGA M/CYL	2		CHF 29.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
27	51K1178	LOCKNUT ROCKER ADJUSTING	4		CHF 3.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
28	2A5576	FORK END PUSH ROD TO PEDAL	2		CHF 35.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
29	AHH5101	PEDAL SEAL MGA STD	1		CHF 23.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
30	AHH5103	MGA RUBBER BLANK PAD	1	passenger side	CHF 4.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
31	AHH5102	RETAINING PLATE	2		CHF 30.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
34	AHH5946	PEDAL BRAKE	1	From (c)58713	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
35	AAA4133	SPACER PEDAL	1		CHF 10.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
36	AHH7201	SPACER TUBE-PEDAL	2		CHF 8.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
37	AHH5100	PEDAL RUBBER MGA&B	2		CHF 3.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
38	AAA1628	SPRING RETURN PEDAL	2		CHF 3.75

Ill.no.	Partno.	Part	Quantity required	Info	Price
39	AAA4129	BUSH PB BRAKE/CLUTCH	2		CHF 11.80

Ill.no.	Partno.	Part	Quantity required	Info	Price
40	BH606221	BOLT 3/8UNFX 2 3/4	1		CHF 1.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
41	GHF202	NUT PLAIN 3/8 UNF	1		CHF 0.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
42	CLZ512	CLEVIS PIN 5/16 X3/4	2		CHF 2.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
1	GMC109	MASTER CYLINDER, BRAKE & CLUTCH, 7/8", AP BRAKING	1	1500cc	CHF 282.15
1	17H7705	BRAKE MASTER CYLINDER 7/8", OE QUALITY, AP	1	1600cc & MkII	CHF 346.50
2	8G8224	REPAIR KIT, BRAKE MASTER CYLINDER 0.875 (7/8") BORE	1		CHF 116.80
2	8G8224Z	REPAIR KIT, BRAKE MASTER CYLINDER 7/8", AFTERMARKET	1	aftermarket	CHF 23.90
3	17H4708	WASHER, ORIGINAL FILLER CAP	1		CHF 11.30
4	513123A	CAP, MASTER CYLINDER, PLASTIC REPLACEMENT	1		CHF 10.20
5	AAA4758	SCREW M/CYLINDER	7		CHF 4.75
8	AJH5085	COVER MASTER CYLINDER GMC109 GMC112 COVER REMOVED	1	1500cc	CHF 32.75
9	17H7702	COVER, MASTER CYLINDER	1	1600cc & MkII	CHF 73.95
10	37H2496	GASKET TOP COVER	1		CHF 2.90
11	AJH5083	SPRING MASTER CYLINDER	2		CHF 6.95
12	7H7925	PISTON	2		availability request (add quantity to basket, offer follows)
13	7H7488	VALVE BODY NCA	1	brake side only	availability request (add quantity to basket, offer follows)
15	AAA4757	GASKET SIDE (M/CYL)	1		CHF 5.60
16	AAA4756	PLATE FRONT	1		availability request (add quantity to basket, offer follows)
20	21K8564	ADAPTOR, SLAVE CYLINDER PIPE	1	for clutch pipe	CHF 19.55
21	233220A	COPPER WASHER 3/8ID 5/8 OD	1	for clutch pipe	CHF 1.10
22	3H550	COPPER WASHER 7/16" X 0.7"	1	for clutch pipe	CHF 1.25
23	3H544	BANJO UNION	1	for clutch pipe	CHF 46.50
24	7H7456	COPPER WASHER 1/4" BSP	1	for clutch pipe	CHF 4.90
25	11K8276	BANJO BOLT	1	for clutch pipe	CHF 18.00
26	BCA4046	PUSH ROD MGA M/CYL	2		CHF 29.45
27	51K1178	LOCKNUT ROCKER ADJUSTING	4		CHF 3.55
28	2A5576	FORK END PUSH ROD TO PEDAL	2		CHF 35.25
29	AHH5101	PEDAL SEAL MGA STD	1		CHF 23.10
30	AHH5103	MGA RUBBER BLANK PAD	1	passenger side	CHF 4.30
31	AHH5102	RETAINING PLATE	2		CHF 30.90
34	AHH5946	PEDAL BRAKE	1	From (c)58713	availability request (add quantity to basket, offer follows)
35	AAA4133	SPACER PEDAL	1		CHF 10.75
36	AHH7201	SPACER TUBE-PEDAL	2		CHF 8.45
37	AHH5100	PEDAL RUBBER MGA&B	2		CHF 3.10
38	AAA1628	SPRING RETURN PEDAL	2		CHF 3.75
39	AAA4129	BUSH PB BRAKE/CLUTCH	2		CHF 11.80
40	BH606221	BOLT 3/8UNFX 2 3/4	1		CHF 1.90
41	GHF202	NUT PLAIN 3/8 UNF	1		CHF 0.15
42	CLZ512	CLEVIS PIN 5/16 X3/4	2		CHF 2.50