The Kenworth L700 front and rear side marker bulb sizes include 1157, 904, and 67 configurations. The replacement chart covers vehicle production spanning 1981 to 1987.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Kenworth L700 front and rear side marker positions draw from three distinct ANSI-standard bulb types across the 1981-1987 model years: the 1157, 904, and 67.
The 1157 is a dual-filament bulb rated at 12V with a 21W main filament and a 5W secondary filament, mounted on a BAY15d bayonet base. Its dual-filament design distinguishes it from the single-filament types also specified for this model.
The 904 is a miniature wedge bulb in a T10 form factor, rated at 12V and 8W. Its wedge base differs fundamentally from the bayonet bases used by the 1157 and 67, making it physically non-interchangeable with either of those types.
The 67 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 8W. It is noted as a lower-wattage variant of the 1156, sharing the same base type but not the same wattage output.
Although the 67 and 1157 both use bayonet bases, their base types differ. The 67 uses a BA15s single-contact base, while the 1157 uses a BAY15d dual-contact base. These two base types are not interchangeable.
For the 1985-1986 Kenworth L700, both the front and rear side marker positions share the same bulb type, the 904, making those two model years internally consistent across both marker positions.
The 1983 model year specifies the 1157 for the front side marker and also the 1157 for the rear side marker, while the 1984 model year specifies the 67 for both positions, representing two years where front and rear positions align on a single bulb type.
The 1987 model year presents a split specification, with the 1157 assigned to the front side marker and the 904 assigned to the rear side marker. These two bulb types use different base designs and wattage ratings, so they are not substitutable for one another.
The 1981 model year specifies the 1157 for both the front and rear side marker positions. At 21W on its primary filament, the 1157 operates at a notably higher wattage than the 8W ratings of the 904 and 67 types also found in this vehicle's specification range.
The 1982 model year specifies different bulb types for the front and rear side marker positions, with the 67 at the front and the 1157 at the rear. Despite both using bayonet-style bases, their contact configurations are different and the two types are not interchangeable.