The Isuzu Rodeo Sport side marker utilizes a 1157NA bulb size for the lighting components located on the exterior of the vehicle. Data for the specific bulb requirements covers the period from 2001 through 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The front side marker position on the Isuzu Rodeo Sport uses two different bulb sizes across its model years, with the 1034NA specified for 2001 and 2003, and the 1157NA specified for 2002.
The 1034NA and 1157NA are both ANSI-standard dual-filament bulbs sharing the BAY15d bayonet base and natural amber glass construction, rated at 12V with a 21W/5W output, making the 1034NA a variant of the 1157NA.
Despite their close relationship, the 1034NA and 1157NA carry separate part designations and are listed under distinct model years, indicating they are not treated as interchangeable within these specifications.
The BAY15d bayonet base found on both the 1034NA and 1157NA features offset pins, a design that prevents incorrect insertion by ensuring the bulb can only be seated in one orientation.
The natural amber glass on the 1034NA and 1157NA produces an amber output without relying on a colored lens, which is a characteristic relevant to side marker applications where amber light is a regulatory requirement in North American markets.
The rear side marker position on the Isuzu Rodeo Sport uses the 168 bulb across all three model years, 2001-2003, representing a consistent fitment throughout the production run covered by these specifications.
The 168 is a single-filament miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W, a significantly lower wattage than the dual-filament bulbs used at the front side marker position.
The T10 wedge base of the 168 bulb requires no locking mechanism, as the bulb is held in place by the tension of the socket itself, a common trait of miniature wedge-type bulbs.