Replaces OE Number: 603-5201
Front Coolant Reservoir Bottle Tank with Cap
- Heavy Duty
- Compatible with 05-20529-000, 05-23045-000
- Cap Included
- Comes with Logo, Wipers and KOZAK Vest
Keep your engine running cool and your coolant system performing at its best with this direct-fit Engine Coolant Reservoir Bottle Tank for 2001-2009 Freightliner Century Class and Columbia models. Designed as a reliable aftermarket replacement, this coolant overflow tank is built to match the original equipment specifications, ensuring a hassle-free fit without any cutting, drilling, or modifications. Whether you're a fleet manager keeping a large number of rigs on the road or a body shop tackling a cooling system repair, this reservoir bottle delivers the dependable performance your truck demands.
Manufactured from high-quality, heat-resistant plastic that stands up to the extreme temperature fluctuations found under a semi truck hood, this coolant reservoir tank is engineered for long-lasting durability. The tank maintains structural integrity under pressure and resists cracking, warping, and discoloration over time. Its clean, factory-style finish gives your engine bay a professional appearance while restoring full coolant overflow functionality. Part number 603-5201 makes cross-referencing and verification simple, so you can order with confidence knowing this is the right part for your Freightliner.
Installation is straightforward and can be completed with basic hand tools, making it an ideal DIY repair for owner-operators looking to minimize downtime. The reservoir bottle mounts securely in the factory location and connects directly to your existing coolant hoses without adapters. Proper coolant level management is critical to preventing overheating and costly engine damage, and this replacement tank restores that system to factory-level operation quickly and efficiently.
At Kozak Parts, we stock this Freightliner Century Class Columbia coolant reservoir bottle right here in our Seattle warehouse, so you can expect fast shipping straight to your door or shop. Don't let a cracked or leaking coolant overflow tank put your truck out of service — order today and get back on the road with confidence.