Aftermarket
Peterbilt 340 359 367 379 386 & 389 Coolant Tank Cap RC0050 *Please Verify OEM Number Before Purchase Coolant Tank Cap Fits Peterbilt 335, 337, 340, 348, 349, 352, 353, 357, 359, 362, 365, 367, 372, 375, 376, 377, 378, 379, 384, 385, 386, 387, 388...