Description Stihl TS400 genuine OEM belt tensioner. Genuine OEM Stihl part Stihl 4221-660-0400 Fits Stihl TS400 Related Products Stihl Belt Tensioner | TS400 MSRP: Was: Now: $16.50 Add to Cart The item has been added Stihl Belt Guard | TS400 MSRP: Was: Now: $33.95 Add to Cart The item has been added Stens Drive Belt | TS400 MSRP: Was: Now: $15.00 Add to Cart The item has been added Stihl Front V-Belt Pulley | TS400 MSRP: Was: Now: $115.00 Add to Cart The item has been added Stihl Drive Belt Tensioner Kit | Stihl TS400, TS460 | 4221-660-0400, 4221-664-2100, 4221-664-4200