9L5521 New Rear Manifold Fits Caterpillar Industrial Construction ModelsOne New Aftermarket Replacement Rear Exhaust Manifold Fits Caterpillar (Fits CAT) Industrial and Construction Equipment This aftermarket replacement rear exhaust manifold is designed Fits Caterpillar equipment powered by the 3306 diesel engine. The Fits Caterpillar 3306 is a 10. 5L inline 6 cylinder diesel used across a wide range of Fits CAT dozers, motor graders, wheel loaders, excavators, and pipe layers. The 3306 exhaust system is a three section