The Claas 0013045801 Maintenance Kit is an essential genuine OEM service package designed for Claas ARION 400 series tractors. This comprehensive kit ensures optimal performance and longevity by providing critical replacement filters. It typically includes a high-quality engine air filter, a fuel filter, an engine oil filter, a hydraulic oil filter, and a cabin air filter, all manufactured to Claas's stringent specifications for perfect fit and function.