Austin Healey

100/4 (BN1) with Le Mans Conversion kit

1955 Austin Healey 100/4 (BN1) – Original Le Mans Conversion KitDutch registration: listed as 100/M
Appraised on 19 November 2025, by a registered and sworn expert valuer at € 67,500 – full report available. Consignment sale through Classic Car Companions
Description1955 Austin Healey 100/4 fitted with a complete and authentic factory-style Le Mans Conversion Kit during restoration. Due to the correctly executed modifications, the car was inspected and registered by the Dutch RDW as a 100/M. Officially it remains a '55 100/4 with original Le Mans kit – all parts are genuine and the conversion is fully documented. Thanks to the higher compression, special camshaft and carburettors, the engine delivers approximately 110 bhp with considerably more torque than the standard 90 bhp version. The difference is immediately noticeable: the car is genuinely quick and lively.
Nut-and-bolt restored 1995–1997 and ever since maintained exclusively by recognised Austin Healey specialists. A very well cared-for, reliable driver ready for tours, regularity rallies and international historic events.
Specification & equipment

• Full original Le Mans Conversion Kit – Le Mans-spec SU H4 carburettors – Le Mans camshaft – Cold-air intake with marked air-filter housing – Bonnet with louvres
• Front disc brakes
• 72-spoke wheels (powder-coated in body colour)
• 123 electronic ignition
• GTI rally twin tripmaster
• Fitted with overdrive

Documentation

• Complete ownership history from 1955
• British Motor Industry Heritage Trust Certificate (2006)
• FIVA Identity Card (issued by FEHAC) – 2007
• Original factory red logbook
• Extensive restoration file with photographs and invoices
• RDW approval documentation for the Le Mans conversion
• Registered & sworn valuation report – 19 November 2025: € 67,500

ConditionRecently fully inspected (lift & road test). The car is in very good condition throughout, roadworthy and immediately usable. Excellent performance and driving manners.
Price & availabilityAsking price: € 67,500 (in accordance with current official valuation) Location: Cromvoirt, The Netherlands. Viewing and test drive strictly by appointment: +31 (0)638261004