The Kawasaki KAF620 Mule 4010 4x4 headlight bulb uses HS1 size for both high beam and low beam applications. The replacement chart covers 2021 to 2022 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The HS1 bulb is the sole bulb type listed across all headlight positions for the Kawasaki KAF620 Mule 4010 4x4, covering both high beam and low beam functions for the 2021-2022 model years.
The HS1 is a dual-filament halogen bulb, meaning a single bulb unit contains two separate filaments, one serving the high beam function and the other serving the low beam function.
The HS1 operates at 12 volts and carries a 35W/35W power rating, where each wattage figure corresponds to one of the two filaments.
The HS1 uses a PX43t base, which is a bayonet-style fitting specific to this bulb type and is not interchangeable with other common automotive base types such as P43t or BA20d.
The HS1 is governed by ECE (Economic Commission for Europe) standards, a regulatory framework recognized across Europe and numerous other markets worldwide.
Because the HS1 originates from motorcycle lighting standards, it is physically and electrically distinct from bulb types designed for passenger car headlight applications, and substitution with non-equivalent types would affect fitment and output.