This pair of SU HD6 carburettors to specification AUC866 is correct for late Austin Healey BN4 models from chassis number 48863 onwards and all BN6 cars. These replaced the earlier H4 units and formed the standard induction setup for the 2639 cc six-cylinder engine during this production phase.
The AUC866 units feature side-draft orientation, side-mounted float chambers and jet configurations designed to suit the original inlet manifold layout. Each pair is supplied matched and ready for fitting, maintaining the intended fuelling and period-correct appearance.
Fits Austin Healey BN4 from chassis 48863, and all BN6 models. Refer to AUC914, AUC935 or AUC963 for later BN7 and BT7 cars.
To support long-term reliability and tuning, we recommend the HD6 service kit, which includes the correct gaskets, seals, needle valves and jets for each carburettor.
