BMC A-series ribcase 4-speed is a manual gearbox from BMC. The Society has 2 vehicles on file with it, 2 with a source we opened and 0 still leads.
MG
| Vehicle | Years | Shift pattern | Gearbox source | Members |
|---|---|---|---|---|
| MG Midget Midget Mk III (GAN4/GAN5, 1275 cc A-series) 1275 cc A-series, 4-speed [1] | 1972-1974 | 4 speed, reverse bottom right | Corroborated | |
| MG Midget (A-series) / Austin-Healey Sprite 4-speed [2]Applies to: All (Midget confirmed; Sprite by family) | 1098 and 1275 cc cars through 1971 | 4 speed, reverse bottom right | Corroborated |
Research notes
Caveats and conflicts (1)
- Page covers the MG Midget; Sprite assumed to share it (same car) but not separately sourced. No part code printed.
References
- Retailer. MGOC Spares: 'BMC A-Series ribcase gearbox was fitted to all 1098cc and 1275cc cars'; synchro on 2nd-4th only. [link]
- Retailer. MGOC Spares Midget gearbox page: "The BMC A-Series ribcase gearbox was fitted to all 1098cc and 1275cc cars"; synchromesh on 2nd, 3rd, 4th only, first gear straight cut. [link]
Categories: Gearboxes | BMC
This page was last edited on November 11, 2026. Gearbox codes change by year, engine and market. Send a correction.