2 0 Caterpillar 3306 DI Exhaust Manifold for a Caterpillar 3306DI $100 USD Good used, cleaned and inspected Caterpillar 3306DI exhaust manifold. Part numbers: 9L5519 / 122-4197 / 9L5521. ConditionUsedFits To Make(s)CATERPILLARFits To Model(s)3306DIStock NumberRyd 9L5519 / 122-41 MLS Number13540630CategoryExhaust Manifolds Last Updated11/3/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info