In the VX Parts Book, it shows the "lens only" in addition to the complete headlight assembly. Whether the lens is actually available as a separate piece - I don't know .

Part number is 89721-24470 Right (passenger US) or 89721-24480 Left (driver side US.) IF it's available, it would be about $23 per side vs. $379 per side for the entire assembly.

Call St Charles Isuzu, ask for Merlin, mention this site for a discount & free shipping (800) 727-8066.