MG

Abingdon, Cowley, Longbridge · 1924–2005 · the octagon

Morris chassis, better carburettors, a lower body and a badge that outlasted every company that owned it.

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All MG PartsEverything we list for the marque, in one place

MG TA & TB1936–1939 MG TC1945–1949 MG TD1949–1953 MG TF Midget1953–1955 MG Y Type1947–1953 MG Magnette1953–1968 MGA1955–1962 MG Midget1961–1979 MGB1962–1980 MGB GT V81973–1976 MG MGC1967–1969 MG 1100 & 13001962–1971 MGF & MG TF1995–2011

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Not listed? Plenty of parts suit several marques and never get the model name in the title — ask us and we will check the books for you.

About MG

MG began as the tuning arm of a Morris dealership — the Morris Garages in Oxford — and the early cars are exactly that: rebodied, lowered Morris Oxfords. The 18/80 of 1928 was the first MG-designed chassis and the first to wear the octagon grille. What followed was a run of small overhead-camshaft sports cars — M-Type, J2, P-Type, the supercharged K3 — and then, from 1936, the pushrod T-Series that made the marque’s name in America. The badge then survived Nuffield, BMC, British Leyland, Austin Rover, BMW, MG Rover and finally SAIC, and it went on plenty of cars that were really Austins or Rovers underneath.

For a parts buyer the range divides into five clean groups, and almost nothing crosses between them. The T-Series and Y Type share the XPAG four and, from the TD on, the Y Type’s coil front suspension and rack-and-pinion steering. The Magnettes are two unrelated saloons on one badge. The MGA, MGB and the Magnette ZA run the BMC B-series, which also takes you straight into the Austin Cambridge and Morris Oxford. The Midget is an A-series car and, until July 1971, the same car as the Austin-Healey Sprite. The MGC looks like an MGB and shares almost nothing at the front end.

Three dates do most of the damage if they are missed. May 1959, chassis 68851 — front disc brakes arrive on the MGA, so anything below that number is drums all round. October 1964 — the MGB goes from a three-bearing to a five-bearing crank, with no change in capacity, so the badge tells a customer nothing. And October 1962 and early 1964 on the Midget, which are two different change points: front discs at the first, semi-elliptic rear springs and wind-up windows at the second. Every model page below sets out its own splits.

MG — the range, and what changes between the cars

The groups: T-Series and Y Type XPAG/XPEG fours, 1936–55 · Magnette two unrelated saloons, 1953–68 · MGA, MGB, MGC the sports cars, 1955–80 · Midget A-series then Triumph, 1961–79 · MGF and MG TF mid-engined K-series, 1995–2011.
XPAG and XPEG: XPAG 1,250cc: TB, TC, TD, TD Mk II, TF 1250 and the whole Y Type range. XPEG 1,466cc: TF 1500 only, with siamesed bores — no water passage between cylinders. MPJG 1,292cc: MG TA only, and it shares nothing with the XPAG.
B-series: 1,489cc Magnette ZA and ZB, MGA 1500, Magnette Mk III · 1,588cc MGA 1600 · 1,622cc MGA 1600 Mk II, Magnette Mk IV · 1,798cc MGB and MGB GT. The same family runs through the Austin A50, A55 and A60, Morris Oxford, Riley and Wolseley, so ancillaries cross widely.
A-series: 948cc Midget Mk I · 1,098cc Midget Mk I late and Mk II, and the MG 1100 · 1,275cc Midget Mk III and MG 1300. But the 1100 and 1300 mount it transversely with the gearbox in the sump — only internals cross. Never fit an ADO16 clutch or gearbox part to a Midget.
C-series: The MGC’s 2,912cc is the seven-bearing redesign, shared with the Austin 3 Litre — not the four-bearing engine of the Austin-Healey 3000, A99 and A110.
Rover V8: MGB GT V8 3,528cc · RV8 3,946cc. Different capacities, and the RV8 is only about 5 per cent carry-over MGB parts.
Brakes, at a glance: T-Series: Lockheed hydraulic 9in drums, the whole series, with two leading shoes at the front from the TD. Y Type Lockheed 9in, twin leading shoe on the YB. Magnette Lockheed drums all round, every mark, no discs ever. MGA drums to chassis 68851, then 11in front discs. MGB 10.75in front discs and 10in rear drums throughout, Lockheed. MGC Girling with servo — does not cross with the MGB. Midget drums to October 1962, then front discs.
Electrics: The one change we can state as fact: the MGB Mk II of autumn 1967 went to negative earth with an alternator in place of the dynamo. For every other model, check your own car — polarity is not documented in a citable source and conversions are common.
Sister marques: The B-series cars share ancillaries with Austin, Morris, Riley and Wolseley; the Midget is the Austin-Healey Sprite to July 1971; the MG 1100 and 1300 are ADO16, so they sit with the Austin Morris 1100 1300 collection.