The Western Star Replacement Y Pipe is a practical and durable solution for replacing the OEM part number 23529-3542. This aluminized Y pipe features a 5-inch diameter and 3-bend OD/OD/OD design, making it a perfect fit for most Western Star Constellation makes and models. With air ride cab compatibility and sold individually, this replacement Y pipe offers a cost-effective and efficient solution for your vehicle's exhaust system needs. Upgrade your Western Star with this high-quality replacement Y pipe for improved performance and longevity.