Toyota MR2 Courtesy Bulb Size

Additional Notes

• The Toyota MR2 courtesy bulb specifications span the 1993-1995 model years, with each year calling for a distinct bulb type rather than a shared fitment across the range.
• The 1995 model year uses the 13050, an OEM and Wagner part number designating a 12V halogen bulb intended for specialty applications. Unlike ANSI-coded bulbs, the 13050 is identified by a manufacturer-assigned number rather than an industry-wide standard.
• The 1994 model year uses the DE3021, an ANSI-standardized festoon bulb operating at 12V. Festoon bulbs make electrical contact through metal caps at each end rather than through a base socket, and the DE3021 has a 31mm length.
• The 1993 model year uses the 6428, also an ANSI-standardized festoon bulb rated at 12V and 5W. It has a 36mm length and an SV8.5 base, which refers to a festoon-style base with a nominal 8.5mm width.
• The DE3021 (1994) and the 6428 (1993) are both festoon-type bulbs operating at 12V, but their lengths differ by 5mm, making them physically non-interchangeable despite their shared form factor and voltage rating.
• All three bulbs share a 12V operating voltage, consistent with standard 12V automotive electrical systems, though only the 6428 carries a specified wattage rating of 5W in the provided data.
• The DE3021 and 6428 carry ANSI designations valid in both the United States and Canada, while the 13050 is defined by OEM and Wagner part numbering rather than an ANSI classification.
• Because each of the three model years references a different bulb with distinct physical and electrical characteristics, substitution across years carries a risk of fitment incompatibility.