Vehicle identified
Open the permanent record to add ownership and photographs.
BN4 and BN6 chassis numbers
Austin-Healey 100-6 VIN Decoder
The six-cylinder 100-6 uses BN4 for the 2+2 and BN6 for the two-seat roadster. Those prefixes are useful enough to identify the body family directly from the original chassis plate.
AU
MODEL DECODER100-61956–1959
Universal VIN Input
Decode from this page
This page explains 100-6, but the input accepts every PetrolJunky-supported identifier.
Decoder Reference
What this identifier can tell you
BN4 2+2BN6 two-seater
BN4 and BN6 separate the two 100-6 body families
The six-cylinder Austin-Healey 100-6 uses BN4 for the 2+2 configuration and BN6 for the two-seat roadster. That makes the original chassis prefix especially valuable: PetrolJunky can identify the basic seating/body family without asking the visitor for a model dropdown or relying on appearance.
Serials are preserved even when the year is broad
The individual car number is stored with the decoded result, but PetrolJunky only converts a serial into an exact year when a reviewed production boundary supports that claim. Otherwise the result gives the correct 100-6 series and its production span. This prevents title-year conventions and restoration assumptions from becoming false registry facts.
Designed for collector records
Once decoded, the same chassis record can support owner claims, photographs, sale status and additional provenance without creating a second vehicle entry for differently formatted versions of the same number.