New item 03/31/13! Plastic belly pan used on all '89 and up garden tractor models with power assisted steering. This part must be in place in order for the hydraulic system to operate correctly. It's often removed due to buildup of debris, however without the belly pan no air flows through the oil cooler causing rapid overheating of the hydraulic oil when using an attachment such as the rototiller. Manual steering models require p/n C31369.