Notes: After 2-85; Reqs 35766; If welded Assy, replace all Reqd parts; Reg Duty Muffler; Optional; HD for 22100;After 2-85; HD Arc-welded construction, recommended for commercial use.
Notes: If welded Assy, replace all Reqd parts.;Dual Outlet; If welded Assy, replace all Reqd parts.;w/o Calif Emissions;Dual Outlet; If welded Assy, replace all Reqd parts; Optional; HD for 18239