87350919 | BACK-UP RING | New Holland Construction 99969-6539 This component — also referred

This component — also referred to as a mower deck belt

This replacement filter effectively removes dust

and an on-board hose and nozzle storage

5000 / 7000 series

Compatible Equipment▼ Belt drive part 607400 from Big Dog Excel Industries MTD is designed to fit select Big Dog zero-turn mower models built on the Excel Industries MTD platform

87350919 | BACK-UP RING | New Holland Construction 99969-6539 This component — also referredGenuine New Holland Construction backup ring (part #87350919). This precision engineered component provides critical sealing and support in hydraulic and mechanical assemblies. Designed to prevent extrusion and protect primary seals from damage under high pressure and extreme operating conditions. OEM quality construction ensures reliable performance and extended equipment life. Essential replacement part for New Holland construction machinery