8 0 Caterpillar 3406E Muffler for a 1998 Peterbilt 378 Contact for price Peterbilt 378 Muffler Stacks Both side available, 1 side doesn't have shield, driver side shield has some damage. (see photos) Call for more information, we ship anywhere., Serial#: other,... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)378Will Fit Year(s)1998Stock NumberPT-0460-56 MLS Number11647857CategoryMufflers Last Updated12/18/2023 LocationYork, ON, Canada Sold ByLomoca Inc. (833) 835-___ SHOWNUMBERCall Seller Email Seller Save More Info