protect your investment*** by performing regular tractor maintenance at or schedule service with us and we will take care of it for you rk21h & rk24h sub-compact tractors rk37 series tractors description unit price unit price sku maintenance products sku fuel filter engine oil filter** hydrostatic filter air filter hydraulic suction strainer engine oil** transmission oil** front axle oil** battery description fuel filter engine oil filter** hydrostatic oil filter hst** hydraulic suction strainer primary air filter secondary air filter engine oil** transmission oil* front axle oil** front axle oil battery gal gal gal rk55 series tractors sku description unit price rk74 series tractor unit price sku εα fuel filter engine oil filter** hydraulic filter gear** hydraulic filter hst** primary air filter secondary air filter engine oil transmission oil** front axle oil* front axle oil battery description fuel filter spin on fuel filter engine oil filter** air filter inner gal gal air filter outer engine oil** transmission oil** front axle oil** battery gal 50-hour service prices* performed per manufacturer prescribed intervals to maintain warranty eligibility model description rk19h rk21h rk24h rk37h rk37sc 19hp hydrostatic sub-compact 21hp hydrostatic sub-compact 24h hydrostatic sub-compact 37hp shuttle shift cab 37hp hydrostatic open station 37hp shuttle shift cab 37hp hydrostatic cab 55hp shuttle shift open station 55hp hydrostatic open station 55hp shuttle shift cab 55hp hydrostatic cab 74hp power shuttle cab parts only parts & labor rk37hc rk55s rk55h rk55sc rk55hc rk74psc