The 13405-PAA-A03 (used OE 98-02) is identical in material and dimensions to the 13405-PT0-004 belt (used OE 90-97), but the OE Service version of the -PT0- belt has timing marks; the OE Service and aftermarket versions of the -PAA- belt do not. The 13405-PAA-A03 belt may be substituted for the 13405-PT0-004 belt as long as care is taken during the alignment of the belt and the drive sprockets.