Land Rover Range Rover Dome Light Bulb Size

The Land Rover Range Rover dome light utilizes bulb sizes 12961 and 6461 for interior illumination across various production periods. Available data covers a span from 1994 through 2012.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2006-2012	12961
1996-2005	6461
1994	6461

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6461

Other Locations

Additional Notes

The Land Rover Range Rover dome light uses two distinct bulb types across its model years: the 12961 and the 6461. These are not interchangeable, as they differ in both physical form and base type.
The 12961 is a Philips-designated miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base. It operates at 12 volts and draws 5 watts.
The T10 wedge base on the 12961 is a push-in style connector, meaning the bulb is held in place by tension rather than a twist-lock or pin mechanism.
The 6461 follows the ANSI standard recognized in the United States and Canada. It is a festoon-type bulb with a 36mm length and an SV8.5 base, also rated at 12 volts and 5 watts.
A festoon bulb makes contact at both ends of its cylindrical body, which is a fundamentally different mounting method from the wedge base used by the 12961. Installing one type into a socket designed for the other is not possible without modification.
Despite the difference in base type and physical form, both bulbs share identical electrical ratings of 12V and 5W, meaning the power draw on the vehicle's electrical system is the same regardless of which type is fitted.
The Land Rover Range Rover (2006-2012) uses the 12961 bulb for the dome light, representing a shift from the festoon format used in earlier production years.
The 6461 festoon bulb is specified for the Range Rover across the 1994-2005 model years, making it the longer-running of the two bulb fitments in this application.
The SV8.5 base designation on the 6461 refers to the contact cap style used on festoon bulbs, where 8.5 indicates the cap width in millimeters.
Because the 12961 carries a Philips part number rather than an ANSI designation, equivalent bulbs from other manufacturers are typically cross-referenced by their T10 wedge form factor and W2.1x9.5d base specification.