This replacement O-ring seals the internal joint of the heater water control valve fitted to Austin Healey 100-6 and 3000 models. It is intended for use during heater valve servicing to restore coolant sealing and maintain proper heater operation.
With age, the original seal can harden or lose elasticity due to heat and coolant exposure. Replacing it helps reduce the risk of seepage from the valve body without requiring full valve replacement.
Designed for use with the original heater control valve fitted to six-cylinder Austin Healey models:
Exclusions: Not compatible with early four-cylinder Austin Healey 100 (BN1, BN2), which use a different heater system.
Installation requires partial or full disassembly of the heater control valve. The original O-ring should be removed carefully and the sealing groove cleaned before fitting the replacement.
If the valve body or spindle is worn or seized, replacing the complete heater valve may be necessary.
This O-ring provides a straightforward solution to a common source of heater valve leaks on ageing Healey systems. It allows targeted repair during servicing without the cost of a full valve replacement, while maintaining compatibility with original components.
