The Western Star Stainless Steel Lower Coolant Tube is a durable and reliable replacement for OEM Number 20402-3504. Constructed from 304 stainless steel, this tube is sold individually and fits most Western Star models with Detroit 60 Series engines. It is a practical and long-lasting solution for maintaining proper coolant flow in your vehicle. With OEM and aftermarket numbers 20402-3504 and 204023504, this coolant tube is a beneficial and cost-effective option for your truck's cooling system needs.