FRONT BRAKES

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.

unillustrated articles

Ill.no.	Partno.	Part	Quantity required	Info	Price
NI	TMK30771	MGA DISC BRAKE CONVERSION, USING MGA CALIPERS	1		CHF 650.40
NI	TMK30770	MGA DISC BRAKE CONVERSION, USING MGB CALIPERS	1		CHF 666.20

Ill.no.	Partno.	Part	Quantity required	Info	Price
80	ATB7075	BRAKE DRUM MGA	2	1500cc steel wheels	CHF 80.05
80	ATB7075ALF	ALFIN DRUM MGA F/R	2	1500cc steel wheels	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
81	ACH5703	BRAKE DRUM TUBE3/4 LARGE	a/r	1500cc steel wheels	CHF 40.65
81	ACH5704	BRAKE DRUM TUBE1/2 SMALL	a/r	1500cc steel wheels	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
82	CMZ407	SCREW C/SK 1/4X7/16	4	1500cc steel wheels	CHF 2.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
84	18G8526K	BRAKE SHOE SET	1		CHF 61.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
85	7H7936	SPRING BRAKE SHOE RETURN	4	1500cc	CHF 14.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
86	ATC4067	BOLT B-PLATE	4	1500cc	CHF 11.05

Ill.no.	Partno.	Part	Quantity required	Info	Price
87	GHF202	NUT PLAIN 3/8 UNF	8/16	1500cc	CHF 0.15

Ill.no.	Partno.	Part	Quantity required	Info	Price
88	ATB4190	BACK PLATE, BRAKE DRUM, FRONT, RH	1	1500cc	availability request (add quantity to basket, offer follows)
88	ATB4191	BACK PLATE, BRAKE DRUM, FRONT, LH	1	1500cc	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
89	ATB7209	LOCKTAB WIRE WHEEL BRAKEDRUM	4	1500cc steel wheels	CHF 4.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
90	ATB4165	BRAKE DRUM FRONT, MGA 1500 WIRE WHEEL	2	1500cc wire wheels	CHF 107.45
90	ATB4165ALF	ALFIN DRUM MGA F/R 1500 WIRE WHEELS	2	1500cc wire wheels	availability request (add quantity to basket, offer follows)

Ill.no.	Partno.	Part	Quantity required	Info	Price
91	NT606041	NUT 3/8 UNF THIN	12	1500cc wire wheels	CHF 0.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
92	ATB4125	LOCKTAB FRONT DRUM	6	1500cc wire wheels	CHF 6.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
93	AHH5514	CHROME PLUG 1/2 INCH	a/r	1500cc wire wheels	CHF 3.85
93	ACH9373	CHROME PLUG 3/4IN	a/r	1500cc wire wheels	CHF 4.55

Ill.no.	Partno.	Part	Quantity required	Info	Price
100	GWC110	WHEEL CYLINDER, FRONT, LOCKHEED, RH	2	1500cc	CHF 60.75
100	GWC110Z	WHEEL CYLINDER, FRONT, RH, AFTERMARKET	2	1500cc aftermarket	CHF 32.90
100	GWC111	WHEEL CYLINDER, FRONT, LOCKHEED, LH	2	1500cc	CHF 60.75
100	GWC111Z	WHEEL CYLINDER, FRONT, LH, AFTERMARKET	2	1500cc aftermarket	CHF 32.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
102	7H7939	SPRING WHEEL CYLINDER	4	1500cc	CHF 3.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
103	7H7938	CUP EXPANDER, WHEEL CYLINDER	4	1500cc	CHF 7.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
104	8G8245	SEAL KIT FRONT WHEEL CYLINDER	4	1500cc	CHF 30.30
104	8G8245Z	SEAL KIT WHEEL CYLINDER, AFTERMARKET (GWC110/1)	4	1500cc aftermarket	CHF 9.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
105	7H7931K	ADJUSTER KIT SNAIL & MASK	4	1500cc	CHF 31.65

Ill.no.	Partno.	Part	Quantity required	Info	Price
106	7H7930	MASK ADJUSTER, BRAKES	4	1500cc	CHF 10.95

Ill.no.	Partno.	Part	Quantity required	Info	Price
107	7H7931	CAM, BRAKE ADJUSTER	4	1500cc	CHF 26.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
108	GHF120	SCREW 5/16 UNF X 3/4	4	1500cc	CHF 0.40

Ill.no.	Partno.	Part	Quantity required	Info	Price
109	7H7520	SCREW, RESERVOIR TO MASTER CYLINDER	4	1500cc	CHF 7.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
110	3H2428	BLEED NIPPLE, 3/8 UNF	2		CHF 2.85

Ill.no.	Partno.	Part	Quantity required	Info	Price
128	BTB108	BRAKE DISC FRONT MGA1600/MK2	2	1600cc, front disc brakes	CHF 52.30

Ill.no.	Partno.	Part	Quantity required	Info	Price
130	17H7734	BRAKE CALIPER, FRONT, RH	1	1600cc, front disc brakes	CHF 115.70
130	17H7735	BRAKE CALIPER, FRONT, LH	1	1600cc, front disc brakes	CHF 115.70

Ill.no.	Partno.	Part	Quantity required	Info	Price
131	17H7730	PISTON, BRAKE CALIPER, MILD STEEL	4	1600cc, front disc brakes - mild steel	CHF 28.30
131	17H7730SS	PISTON, BRAKE CALIPER, STAINLESS STEEL	4	1600cc, front disc brakes - stainless steel	CHF 73.25

Ill.no.	Partno.	Part	Quantity required	Info	Price
132	GRK5007Z	USE GRK5007K	2	1600cc, front disc brakes

Ill.no.	Partno.	Part	Quantity required	Info	Price
133	8G8379AF	BRAKE PAD SET, STANDARD	1	1600cc, front disc brakes - standard	CHF 42.05
133	8G8379CM	BRAKE PAD SET, CERAMIC, CLASSIC GOLD	1	1600cc, front disc brakes - ceramic	CHF 83.25
133	8G8379G	BRAKE PAD SET, EBC GREENSTUFF	1	1600cc, front disc brakes - uprated, EBC Greenstuff	CHF 86.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
134	17H7733	CLIP PAD RETAINING	2	1600cc, front disc brakes	CHF 10.50

Ill.no.	Partno.	Part	Quantity required	Info	Price
135	17H7732	LOCATING PIN	2	1600cc, front disc brakes	CHF 21.00

Ill.no.	Partno.	Part	Quantity required	Info	Price
136	17H7679	SEAL CALIPER BRIDGE	2	1600cc, front disc brakes	CHF 1.90

Ill.no.	Partno.	Part	Quantity required	Info	Price
137	GHF201	NUT 5/16 UNF	4	1600cc, front disc brakes	CHF 0.45

Ill.no.	Partno.	Part	Quantity required	Info	Price
138	BTB126	MGA BRAKE HOSE BRACKET RH	1	1600cc, front disc brakes	CHF 46.10
138	BTB127	MGA BRAKE HOSE BRACKET LH	1	1600cc, front disc brakes	CHF 46.10

Ill.no.	Partno.	Part	Quantity required	Info	Price
139	BTB128	BOLT CALIPER MOUNTING A1600	4	1600cc, front disc brakes	CHF 20.60

Ill.no.	Partno.	Part	Quantity required	Info	Price
NI	TMK30771	MGA DISC BRAKE CONVERSION, USING MGA CALIPERS	1		CHF 650.40
NI	TMK30770	MGA DISC BRAKE CONVERSION, USING MGB CALIPERS	1		CHF 666.20
80	ATB7075	BRAKE DRUM MGA	2	1500cc steel wheels	CHF 80.05
80	ATB7075ALF	ALFIN DRUM MGA F/R	2	1500cc steel wheels	availability request (add quantity to basket, offer follows)
81	ACH5703	BRAKE DRUM TUBE3/4 LARGE	a/r	1500cc steel wheels	CHF 40.65
81	ACH5704	BRAKE DRUM TUBE1/2 SMALL	a/r	1500cc steel wheels	availability request (add quantity to basket, offer follows)
82	CMZ407	SCREW C/SK 1/4X7/16	4	1500cc steel wheels	CHF 2.25
84	18G8526K	BRAKE SHOE SET	1		CHF 61.60
85	7H7936	SPRING BRAKE SHOE RETURN	4	1500cc	CHF 14.90
86	ATC4067	BOLT B-PLATE	4	1500cc	CHF 11.05
87	GHF202	NUT PLAIN 3/8 UNF	8/16	1500cc	CHF 0.15
88	ATB4190	BACK PLATE, BRAKE DRUM, FRONT, RH	1	1500cc	availability request (add quantity to basket, offer follows)
88	ATB4191	BACK PLATE, BRAKE DRUM, FRONT, LH	1	1500cc	availability request (add quantity to basket, offer follows)
89	ATB7209	LOCKTAB WIRE WHEEL BRAKEDRUM	4	1500cc steel wheels	CHF 4.60
90	ATB4165	BRAKE DRUM FRONT, MGA 1500 WIRE WHEEL	2	1500cc wire wheels	CHF 107.45
90	ATB4165ALF	ALFIN DRUM MGA F/R 1500 WIRE WHEELS	2	1500cc wire wheels	availability request (add quantity to basket, offer follows)
91	NT606041	NUT 3/8 UNF THIN	12	1500cc wire wheels	CHF 0.55
92	ATB4125	LOCKTAB FRONT DRUM	6	1500cc wire wheels	CHF 6.90
93	AHH5514	CHROME PLUG 1/2 INCH	a/r	1500cc wire wheels	CHF 3.85
93	ACH9373	CHROME PLUG 3/4IN	a/r	1500cc wire wheels	CHF 4.55
100	GWC110	WHEEL CYLINDER, FRONT, LOCKHEED, RH	2	1500cc	CHF 60.75
100	GWC110Z	WHEEL CYLINDER, FRONT, RH, AFTERMARKET	2	1500cc aftermarket	CHF 32.90
100	GWC111	WHEEL CYLINDER, FRONT, LOCKHEED, LH	2	1500cc	CHF 60.75
100	GWC111Z	WHEEL CYLINDER, FRONT, LH, AFTERMARKET	2	1500cc aftermarket	CHF 32.90
102	7H7939	SPRING WHEEL CYLINDER	4	1500cc	CHF 3.10
103	7H7938	CUP EXPANDER, WHEEL CYLINDER	4	1500cc	CHF 7.25
104	8G8245	SEAL KIT FRONT WHEEL CYLINDER	4	1500cc	CHF 30.30
104	8G8245Z	SEAL KIT WHEEL CYLINDER, AFTERMARKET (GWC110/1)	4	1500cc aftermarket	CHF 9.60
105	7H7931K	ADJUSTER KIT SNAIL & MASK	4	1500cc	CHF 31.65
106	7H7930	MASK ADJUSTER, BRAKES	4	1500cc	CHF 10.95
107	7H7931	CAM, BRAKE ADJUSTER	4	1500cc	CHF 26.90
108	GHF120	SCREW 5/16 UNF X 3/4	4	1500cc	CHF 0.40
109	7H7520	SCREW, RESERVOIR TO MASTER CYLINDER	4	1500cc	CHF 7.45
110	3H2428	BLEED NIPPLE, 3/8 UNF	2		CHF 2.85
128	BTB108	BRAKE DISC FRONT MGA1600/MK2	2	1600cc, front disc brakes	CHF 52.30
130	17H7734	BRAKE CALIPER, FRONT, RH	1	1600cc, front disc brakes	CHF 115.70
130	17H7735	BRAKE CALIPER, FRONT, LH	1	1600cc, front disc brakes	CHF 115.70
131	17H7730	PISTON, BRAKE CALIPER, MILD STEEL	4	1600cc, front disc brakes - mild steel	CHF 28.30
131	17H7730SS	PISTON, BRAKE CALIPER, STAINLESS STEEL	4	1600cc, front disc brakes - stainless steel	CHF 73.25
132	GRK5007Z	USE GRK5007K	2	1600cc, front disc brakes
133	8G8379AF	BRAKE PAD SET, STANDARD	1	1600cc, front disc brakes - standard	CHF 42.05
133	8G8379CM	BRAKE PAD SET, CERAMIC, CLASSIC GOLD	1	1600cc, front disc brakes - ceramic	CHF 83.25
133	8G8379G	BRAKE PAD SET, EBC GREENSTUFF	1	1600cc, front disc brakes - uprated, EBC Greenstuff	CHF 86.00
134	17H7733	CLIP PAD RETAINING	2	1600cc, front disc brakes	CHF 10.50
135	17H7732	LOCATING PIN	2	1600cc, front disc brakes	CHF 21.00
136	17H7679	SEAL CALIPER BRIDGE	2	1600cc, front disc brakes	CHF 1.90
137	GHF201	NUT 5/16 UNF	4	1600cc, front disc brakes	CHF 0.45
138	BTB126	MGA BRAKE HOSE BRACKET RH	1	1600cc, front disc brakes	CHF 46.10
138	BTB127	MGA BRAKE HOSE BRACKET LH	1	1600cc, front disc brakes	CHF 46.10
139	BTB128	BOLT CALIPER MOUNTING A1600	4	1600cc, front disc brakes	CHF 20.60