R20508R Fits John Deere Tractor Air Cleaner Spacer Block 530One New Aftermarket Replacement Air Cleaner Spacer Block Fits John Deere 530 Tractor This air cleaner spacer block, also known as an air stack spacer block, is a component of the air intake assembly on the Fits John Deere (Fits JD) 530 two cylinder tractor. It mounts between the air cleaner stack and its base casting, sealing and spacing the air intake system to ensure proper airflow into the engine and prevent unfiltered air from bypassing the