The Freightliner FLD With Caterpillar 3406 Stainless Steel Coolant Tube is a durable and practical solution for most Freightliner FLD models with Caterpillar 3406 engines. Made from 304 stainless steel, this coolant tube offers reliable performance and longevity. It is sold individually and fits seamlessly into your truck's cooling system. With OEM and aftermarket numbers A05-15785-000 and A0515785000, this coolant tube is a reliable replacement part that ensures efficient engine cooling. Upgrade your Freightliner FLD with this high-quality stainless steel coolant tube for enhanced performance and peace of mind.