Fits 2008 - 2010 Peterbilt 335, 337, 340, 348, 349, 352, 353, 357, 359, 362, 365, 367, 372, 375, 376, 377, 378, 379, 384, 385, 386, 387, 388, 389 *Using a Cummins Engine with a BEHR Cooling Module*

This surge tank has a 1.25 " diameter hole for a filler neck, a 1/8 " NPT flange next to the filler neck, a 3/4 " NPT fitting on the opposite side for a bypass hose, and a mounting bracket.

This tank has a 1 " diameter hose connection, a mounting bracket with three holes, a mounting bracket with two holes, a stand pipe for a fill neck, a 1 1/4 " diameter hose connection, two 3/8 " diameter overflow tubes, and a trough with a through-hole to accommodate mounting.

Fits 2008 - 2010 Peterbilt 335, 337, 340, 348, 349, 352, 353, 357, 359, 362, 365, 367, 372, 375, 376, 377, 378, 379, 384, 385, 386, 387, 388, 389 *Using a Cummins Engine with a BEHR Cooling Module*