The reasons to replace the entire assembly vary, but basically if you want your turn signal lamps to operate and look like new, you can't beat new! These are complete assemblies including clear PLASTIC lens, bulb, chrome trim ring socket and rubber boot. 'Dual element' means that it will work for both turn signal and parking lights.

The reasons to replace the entire MINI assembly vary, but basically if you want your turn signal lamps to operate and look like new, you can't beat new! This is a complete assembly including amber GLASS lens, bulb, chrome trim ring socket and rubber boot.
Dual element for turn signals and parking lights combined.

This is a complete assembly including clear GLASS lens, bulb, chrome trim ring socket and rubber boot.
Dual element for turn signals and parking lights combined.

This front turn lamp assembly type was used on all Mkl & Mkll Saloons, all Vans and Pick-Ups. It is also an easy installation on later cars seeking that proper sixties look. Complete assembly includes everything from amber glass lens to bullet wire connectors. Also for later Morris Minor Traveller, Van & Pick Up rear turn signal lamps when the stop lamps were separate.
This is the single filament socket (two wires - turn signal only), no parking lamp type.