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582 W21W SPECIFICATION – Red automotive bulbs rated at 12V 21W with W3x16d T20 capless wedge base and single filament design. EQUIVALENT PART NUMBERS – Also known as 382WR and 7440, compatible with vehicles requiring this 21W fitment. BRAKE / TAIL / FOG APPLICATION – Suitable for rear brake light, tail light and fog light systems using 21W single filament bulbs. CAPLESS PUSH-FIT BASE – T20 W3x16d wedge design allows direct installation into compatible holders without modification. 10 PACK VALUE – Bulk pack ideal for multiple replacements, workshop use or maintaining spare stock.