Nissan Quest Turn Signal Bulb Size

Additional Notes

• The 7440NA bulb is the most consistently used rear turn signal bulb across the Nissan Quest, appearing in all model years from 2011-2017. It is a single-filament T20 wedge bulb rated at 12V and 21W, with natural amber glass that produces the amber color required for turn signal applications without relying on a colored lens.
• The 1034NA and 1157NA bulbs share the same BAY15d bayonet base and 12V, 21W/5W dual-filament configuration, making them closely related types. The 1034NA is noted as a variant of the 1157NA, and both appear in the front turn signal positions of the Nissan Quest across various model years in the 2011-2017 range.
• The 3457, 3157, 3157NA, and 3156 bulbs all belong to the T25 wedge family. The 3457 and 3157 series are dual-filament types rated at 12V and 27W/7W, while the 3156 is a single-filament type rated at 12V and 27W. These distinctions matter for fitment, as substituting a single-filament bulb where a dual-filament type is specified would result in the loss of one lighting function.
• Natural amber (NA) variants of bulbs such as the 1034NA, 1157NA, 3157NA, 3156NA, 7440NA, and 1156NA use tinted glass to produce amber light. Non-NA versions of the same base type produce clear or white light and are not direct substitutes in positions where amber output is specified by the vehicle manufacturer.
• The front turn signal position of the Nissan Quest shows considerable variation across model years, with at least seven distinct bulb types specified between 1993 and 2017. This variation means that bulb type cannot be assumed based on vehicle generation alone, and the specific model year must be referenced before selecting a replacement.
• The 2057 bulb, used in the rear turn signal of the Nissan Quest for 1993-1995 and 1997, shares the BAY15d bayonet base with the 1157 but operates at higher wattages of 26.9W/8W. Despite the shared base, the 2057 is not interchangeable with the 1157 or its variants in all applications due to the difference in filament wattage.
• The 2456 bulb is classified as a festoon-type specialty bulb, which uses a different physical form factor than wedge or bayonet base bulbs. It appears in both front and rear turn signal positions across several model years of the Quest, and its festoon construction means it is not physically compatible with sockets designed for wedge or bayonet base types.
• The 2356 bulb uses a BAY15d bayonet base and a dual-filament configuration, placing it in the same base family as the 1157, 1034NA, and 2057. It appears in the front turn signal position of the 1994 Quest, and while the base type is shared with other bulbs in this family, wattage and filament ratings differ across the group.
• The rear turn signal of the Nissan Quest used the 1156NA for the 1996 and 1998 model years. This bulb has a BA15s single-contact bayonet base, which is a different base type from the BAY15d double-contact base used by bulbs such as the 1157NA and 2057. The two base types are not interchangeable despite their visual similarity.
• Across both front and rear turn signal positions, the Nissan Quest specifications include both single-filament and dual-filament bulb types depending on the model year. Installing a dual-filament bulb in a single-filament socket, or vice versa, presents a fitment incompatibility, as the socket pin configuration differs between the two base designs in the BAY15d and BA15s families.