Plymouth Arrow Pickup front and rear side marker bulbs utilize a 168 bulb size across all applications. The replacement chart covers 1979 to 1982 vehicle production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Plymouth Arrow Pickup uses the 168 bulb for both front and rear side marker positions across the 1979-1982 model years.
The 168 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system, where "T" refers to the tubular shape and "10" indicates the width in eighths of an inch.
The 168 bulb operates at 12 volts and draws 4.9 watts, placing it among the lower-wattage bulbs in automotive lighting applications.
The wedge base design of the T10 means the bulb is held in its socket by the tension of the glass envelope itself rather than by a separate metal base with pins, which is a common trait in low-current marker light applications.
The 168 carries ANSI standardization recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical tolerances shared across manufacturers.
Because the same 168 bulb size is specified for all four model years in both the front and rear side marker positions, the Plymouth Arrow Pickup (1979-1982) shows no variation in side marker bulb fitment across its production run.
The T10 wedge format is shared by several bulb numbers, including the 194 and 161, which differ in wattage. The 168 is rated at 4.9W, distinguishing it from the 194 at 3.8W and the 161 at 3.0W, so substitution with those types would alter light output.