Heavy Duty 603-5403 N5346001 Coolant Overflow Reservoir Bottle Tank
Compatible with Kenworth Trucks: W900 2008-2022; T800 2008-2022; T660 2008-2020; T600 2008-2015
- Brand New Radiator Overflow Bottle Includes Cap Replaces dealer part number: N5346001, T1673008, 603-5403 Plastic construction
- Part number: N5346001, T1673008, 603-5403
- Fits models with Cummins or CAT engines only
- Comes with Logo Emblem, 2x 22" Windshield Wipers and Kozak Vest
Keep your Kenworth running cool and performing at its best with this heavy-duty Coolant Overflow Reservoir Bottle Tank, designed as a direct-fit replacement for the W900, T800, T660, and T600 models from 2008 through 2022 (T660 through 2020, T600 through 2015). Whether you're managing a large fleet or maintaining your own rig, a properly functioning coolant reservoir is essential for preventing overheating and protecting your engine investment. This bottle replaces OEM part numbers N5346001, T1673008, and 603-5403, making it easy to confirm compatibility before you order.
Built from durable plastic construction, this coolant overflow tank is engineered to withstand the demanding conditions of long-haul trucking. It is compatible with Cummins and CAT engine configurations, covering a wide range of Kenworth applications that rely on these trusted powerplants. The reservoir comes complete with a cap, so you have everything you need to get back up and running without hunting down additional hardware. The included Kenworth logo emblem ensures a factory-style appearance once installed, keeping your cab looking sharp and professional.
Installation is straightforward and designed for a direct bolt-on fit, which means less downtime whether you're handling the job in-house or dropping it off at your local body shop. The precise fitment eliminates the guesswork often associated with aftermarket parts, giving truck owners and technicians alike the confidence that the reservoir will seat and seal correctly the first time. As a bonus, each kit includes two 22-inch windshield wipers to help you get more value out of your purchase.
At Kozak Parts, customer satisfaction and fast delivery are top priorities. Orders ship quickly from our Seattle, WA warehouse, so you can minimize downtime and get your Kenworth back on the road as soon as possible. Shop with confidence knowing you're getting a quality aftermarket part at a competitive price.