The Peterbilt 386 Stainless Steel Lower Coolant Tube is a durable and reliable product designed for Peterbilt 386 models with Caterpillar C15 and ACERT engines. Made from high-quality 304 stainless steel, this coolant tube offers superior strength and longevity. It is sold individually and fits seamlessly into your vehicle's cooling system. With its OEM and aftermarket numbers, F66-6257 and F666257, this coolant tube is a practical and efficient solution for maintaining optimal engine performance. Upgrade your Peterbilt 386 with this stainless steel coolant tube for enhanced durability and peace of mind.