Heavy Duty 603-5403 N5346001 Coolant Overflow Reservoir Bottle Tank
Peterbilt Trucks: 389 2008-2022; 388 2008-2015; 386 2008-2016; 385 2008-2014; 384 2008-2016; 382 2008-2017; 377 2008-2014; 367 2008-2022; 365 2008-2022; 348 2010-2018
- 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 engine running cool and protected with this heavy-duty Coolant Overflow Reservoir Bottle Tank designed specifically for Peterbilt trucks. This brand-new replacement part is engineered to fit a wide range of Peterbilt models, including the 389, 388, 386, 385, 384, 382, 377, 367, 365, and 348, covering model years from 2008 through 2022. Whether you're managing a fleet or keeping a single rig road-ready, this coolant reservoir bottle delivers the reliable performance your truck demands. Please note this part is compatible with Cummins and CAT engines only, so be sure to verify your engine type before ordering.
This coolant overflow tank is constructed from durable, high-quality plastic built to withstand the harsh under-hood conditions of heavy-duty trucking. The reservoir comes complete with a cap included, so you have everything you need right out of the box. It directly replaces OEM dealer part numbers N5346001, T1673008, and 603-5403, ensuring a precise fit with no modifications required. The straightforward drop-in installation makes this an easy job for experienced truck mechanics and body shops alike, minimizing downtime and getting your Peterbilt back on the road fast.
Maintaining a properly functioning coolant overflow bottle is essential for regulating engine temperature, preventing overheating, and protecting your engine investment over the long haul. A cracked or damaged reservoir can lead to coolant loss, overheating, and costly engine repairs down the road. Replacing a worn or leaking tank with this quality aftermarket part is a smart, cost-effective solution that keeps your cooling system operating at peak efficiency.
At Kozak Parts, we stock this Peterbilt coolant reservoir bottle and ship it fast from our Seattle warehouse, so you can count on quick delivery no matter where your trucks are based. Order today and get the right part at the right price, backed by the aftermarket expertise your operation deserves.