The Volvo 17.52 Inch Long Stainless Steel Exhaust Bellow is a practical and environmentally friendly product that offers numerous benefits. With a 4-4/5 inch outer diameter and 4 inch inner diameter, it is designed to fit most Volvo makes and models. Made from stainless steel, it is directly replaceable with OE parts and meets the exhaust emission norm of EPA 07. With a direct OE replacement number of 21428536 and 22307703, this exhaust bellow is a reliable and efficient choice for Volvo owners.