This SU fuel pump is designed for Austin Healey BN1 to early BN4 models and follows the original SU operating principle using mechanical contact breaker points. It provides the correct period-style function while allowing use on either positive or negative earth 12-volt electrical systems.
This pump retains the traditional SU switching method using contact breaker points. This design produces the familiar ticking operation and can be serviced in line with original maintenance practices.
Unlike earlier pumps that were polarity-specific, this unit is built for dual polarity. It can be installed on both positive and negative earth vehicles without modification, making it suitable for cars that have been converted from their original electrical configuration.
Correct application depends on chassis range and original pump type. Check existing installation if unsure.
DUAL POLARITY
Yes. The dual polarity design allows use on both positive and negative earth systems without modification.
Yes. The mechanical points operation produces the characteristic SU pump ticking during use.
No. This is a points-type SU pump using mechanical contact breaker points.
No. This version is intended for early BN4 cars. Later BN4 models typically require a different pump specification.
