This pair of SU H4 carburettors is correct for early Austin Healey 100/6 BN4 models up to chassis number BN4(C)48862. These carburettors follow the original AUC815 specification fitted to the 2639cc six-cylinder engine prior to the introduction of HD6 units in later cars.
The setup includes twin semi-downdraught SU H4 units as originally fitted, offering consistent fuelling and correct period detail for restorations focused on originality and road usability. The pair is supplied complete and ready for installation.
Fits Austin Healey 100/6 BN4 models up to chassis number BN4(C)48862. For later BN4 and BT7 cars, refer to the HD6 carburettor specification instead.
To keep these units performing correctly over time, we recommend the H4 Service Kit, which includes all necessary seals, gaskets and needle components for a single carburettor.
Early BN4 (2 port head)
