RELIANCE VERSION OF 581199701 AND OLD NUMBER 516001901. THIS IS A SEMI PNEUMATIC (NO AIR) ASSEMBLY THAT WILL REPLACE HUSQVARNA PNEUNATIC ASSEMBLY. FITS LAWN TRACTORS AND ZERO TURN CONSUMER MODELS Z242, Z4218, Z4822, Z4824, Z5426, RZ4216, RZ4619, RZ46
