The Aprilia ETV 1000 Caponord front turn signal bulb size is 5008 or 232, while the rear turn signal bulb size is PY21W or 12496. The replacement chart covers 2001 through 2007 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Aprilia ETV 1000 Caponord front turn signal position uses two distinct bulb types across its production years: the 5008 for 2001-2003, 2005, and 2007, and the 232 for 2004 and 2006.
The 5008 is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V. It is a lower-wattage variant of the 1156 bulb type.
The 232 is an ANSI-standard festoon bulb with an SV8.5 base, rated at 12V and 3W. Its festoon form factor differs fundamentally from the bayonet-base 5008, making the two types non-interchangeable.
The rear turn signal position similarly alternates between two bulb types: the PY21W for 2004-2005 and 2007, and the 12496 for 2001-2003 and 2006.
The PY21W is an ECE-standard single-filament amber bulb with a BAU15s bayonet base, rated at 12V and 21W. Its amber glass construction is integral to its turn signal function rather than relying on a clear bulb within an amber lens.
The BAU15s base of the PY21W has an offset pin arrangement that physically prevents installation of a standard BA15s bulb such as the 5008, making cross-substitution between front and rear bulb types mechanically incompatible.
The 12496 is a Philips/Osram part number designation for a 12V halogen bulb intended for specialty applications. Unlike the ANSI and ECE designations used for the other bulb types, the 12496 reference is manufacturer-specific rather than a universal standard.
The front and rear positions on the ETV 1000 Caponord do not share a common bulb type in any given model year, as the front uses either a BA15s or SV8.5 base while the rear uses either a BAU15s or a specialty halogen fitting.