Coolant Overflow Reservoir Bottle Tank 603-5403 Heavy Duty Engine Coolant Reservoir Replacement For Kenworth and Peterbilt Models W900 T800 T660 T600 330 337 348 365 367 389,Replaces Part#: 603-5403, N5346001, T1673008 Features: * The coolant reservoir tank can easily be located on the engine. * If you are experiencing leaks, low level of coolant and overheating engine. * you may need to change your coolant reservoir tank. * This engine coolant reservoir matches the fit and function of the original part, Direct replacement . * The coolant reservoir tank can easily be located on the engine bay mounted on the engine near and connected to the radiator. Replacement For 2008-2015 Kenworth T600 Replacement For 2008-2017 Kenworth T660 Replacement For 2008-2017 Kenworth T800 Replacement For 2011-2017 Kenworth T880 Replacement For 2008-2017 Kenworth W900 Replacement For 2008-2015 Peterbilt 330 Replacement For 2008-2010 Peterbilt 335 Replacement For 2010-2017 Peterbilt 337 Replacement For 2008-2010 Peterbilt 340 Replacement For 2010-2018 Peterbilt 348 Replacement For 2008-2008 Peterbilt 357 Replacement For 2008-2018 Peterbilt 365 Replacement For 2008-2018 Peterbilt 367 Replacement For 2011-2017 Peterbilt 382 Replacement For 2008-2016 Peterbilt 384 Replacement For 2008-2008 Peterbilt 385 Replacement For 2008-2016 Peterbilt 386 Replacement For 2008-2011 Peterbilt 387 Replacement For 2008-2015 Peterbilt 388 Replacement For 2008-2017 Peterbilt 389