Description
Overview:
This genuine Stihl V‐belt is a factory‐spec replacement for the power transmission system on compatible walk‐behind lawn mowers. Built from a durable rubber composite with a reinforced tensile cord, it resists stretch and glazing while delivering consistent grip around the pulleys. The belt transfers engine power efficiently to the mower's drive and/or cutting system so the machine runs smoothly under load. It is designed to match the original pulley profile for reliable engagement, stable tracking and quiet operation. Suited to Stihl MB 4.0 RT and RM 4.0 RT variants that specify MPN 6383 704 2100, it restores performance when a belt has worn, cracked or begun to slip. As a genuine part, it offers precise fit and compatibility with the mower's guards and tensioners for straightforward maintenance.
Key Features:
- Genuine Stihl OEM part (MPN 6383 704 2100) for assured fit and compatibility
- Durable rubber compound with reinforced cord to resist stretch and glazing
- Correct V profile for efficient power transfer and reduced slip under load
- Smooth running to protect pulleys, bearings and clutch components
- Engineered for regular mowing demands and frequent start/stop cycles
- Stable tension retention with standard Stihl tensioners
- Helps restore cutting and/or drive performance on MB 4.0 RT and RM 4.0 RT mowers
- Straightforward like‐for‐like replacement using basic hand tools
- Reduces downtime and the need for frequent re‐tensioning
- Oil-, abrasion- and heat-resistant construction for longer service life
Typical Applications:
Ideal for routine servicing or replacing a worn, cracked or slipping belt that causes loss of drive, blade stall, squeal or inconsistent self‐propel speed. Suitable for domestic lawn care, professional grounds maintenance and contractor use where reliable mower operation is required through the mowing season.
Also known as:
Deck belt, blade belt, traction belt, transmission belt, cutter belt, V‐section belt, lawnmower belt, power transmission belt.
Fits Models:
MB 4.0 RT, MB4.0RT, MB40RT, RM 4.0 RT, RM4.0RT, RM40RT
Alternate Part Numbers:
6383-704-2100, 63837042100
