This matched pair of SU HD6 carburettors to specification AUC935 is correct for Austin Healey BN7 and BT7 models with engine numbers 29D-H2864 to 29D-H6394. These units feature the automatic choke mechanism and were supplied during a narrow production range between the AUC914 and AUC963 setups.
The HD6 AUC935 carburettors retain the side-draft layout and are fitted with side-mounted float chambers and jet assemblies. This version includes provisions for the original automatic cold-start system, making it important to match with factory-spec ancillaries when restoring vehicles built in this range.
Fits Austin Healey BN7 and BT7 models with engines 29D-H2864 to 29D-H6394. For earlier engines use AUC914; for later engines refer to AUC963.
To support performance and long-term reliability, use the appropriate HD6 service kit, which includes gaskets, seals, needles and jets for each carburettor.
