The MGB accelerator pedal changed several times during production, and the correct replacement depends on both the car’s bumper type and its production period. The pedal is a floor-hinged type, pivoting on a bolt through the pedal box area and connected to the throttle cable at its upper end.
Early chrome bumper cars with the 3-synchro gearbox (1962 to 1967) used one pedal design. Chrome bumper 4-synchro cars (1967 to 1974) used a different type.
Rubber bumper cars were fitted with a further revised pedal, which itself changed again from September 1976 with the introduction of a new design for the final production period. These pedals are not interchangeable between configurations, so confirming the car’s gearbox type and production period is essential when ordering.
Pedal Pads & Hardware
A rubber pedal pad is available as a practical modification for certain chrome bumper and early rubber bumper pedal types that were not originally supplied with one. The pad improves grip, particularly in wet shoes, and provides a more comfortable feel underfoot. It is not an original fitment but is a worthwhile addition that many owners choose to make. The pedal pivot bolt, distance tube, and return stop components are available individually for cars where the pedal itself is sound but the mounting hardware has worn or corroded.
A worn pivot bolt will allow the pedal to rock laterally, giving an imprecise throttle feel that no amount of cable adjustment will resolve. The pedal return stop screw and nut set the pedal’s rest position and prevent the throttle from remaining slightly open at idle.
When replacing or overhauling the accelerator pedal assembly, the throttle cable should be inspected at the same time, a new pedal fitted to a corroded or stiff cable will not deliver the smooth, progressive throttle response that the MGB should have. The cable guide, seal, and bulkhead grommet should also be checked and renewed where necessary. The MGOC Spares range covers accelerator pedals, pedal rubbers, pivot bolts, distance tubes, return stops, and all associated fixings for every MGB configuration across the full production run.