The Kenworth W900 Top Surge Tank is a practical and reliable product designed for Kenworth W900 models. With its sleek black finish, this surge tank is a perfect fit for most Kenworth W900 models. It is sold individually and is compatible with both OEM and aftermarket numbers, including 557023, X3606, X4902, 3A055208, and X49021. This surge tank offers durability and functionality, making it an essential component for your Kenworth W900.