Protect your Peterbilt bumper from rocks and debris with our Bumper Rock Guards. Available in round or rectangular shapes, the round option fits Model 359 Conventional and 352 COE, 378 & 379 Conventional from 1967-1986, while the rectangular option fits Model 378 & 379 Conventional from 1987 and newer. Our guards feature a chrome screen and black rubber mounting rim, and are sold in bulk for your convenience. Keep your bumper looking like new with our durable and practical rock guards.