The Washer is the cheapest item from this partsfiche.
Parts such as the Muffler: Washer, Bolt(8x40), Cushion, Washer(8.5x28x1.6) are included in the Gs500f 2004 (k4) Usa (e03) Muffler parts fiche.
This Muffler is the most expensive of the items that make up this Muffler assembly.
