2003 Nissan Xterra 3.3L Alternator Starter Parts, Bearings, Components, and Rebuild Kits. Even after selecting your year model, compatibility is guaranteed by additional Qualifiers; Ex: Engine Size, Automatic or Manual Transmission, Amperage, Factory or Manufacturer Reference Numbers, and more. You must read full description of any product to see qualifiers and to guarantee fit. Avoid the hassle of waiting for the wrong part and contact us if needed. Thank You!