Order Today to get your equipment back to in top shape. SIMPLICITY Replacement Drive Chain These rugged drive chains measure 23" with 46 pins/rollers including a supplied master joiner link. Our Premium #41 chains are rugged to ANSI Standards with hardened solid steel rollers and pins. Shot peened side plates for stress relief and longer service life. Bulk Packaged - No retail packaging. Quick and easy installation with included master joiner link. Chain Pitch: 0.500" Roller Diameter: 0.306" Roller Width: 0.250" Pin Diameter: 0.141" Plate Thickness: 0.050" Tensile strength: 2100 Pounds This part is compatible with the following machines: Simplicity 555M (1691011) - Simplicity 5HP 22" Two-Stage Snowthrower - Wheels Traction Drive Group Simplicity 755E (1691181) - Simplicity 7HP 22" Two-Stage Snowthrower - Wheels Traction Drive Group Simplicity 555M (1691411) - Simplicity 5HP 22" Snowthrower (SN: 6137 Below) - Wheels Traction Drive Group Simplicity 555M (1691411) - Simplicity 5HP 22" Snowthrower (SN: 6137 Up) - Wheels Traction Drive Simplicity 755E (1691413) - Simplicity 7HP 22" Snowthrower (SN: 13781 Below) - Wheels Traction Drive Group Simplicity 755E (1691413) - Simplicity 7HP 22" Snowthrower (SN: 13781 Up) - Wheels Traction Drive Simplicity 755M (1691414) - Simplicity 7HP 22" Snowthrower (SN: 2000 Below) - Wheels Traction Drive Group Simplicity 755M (1691414) - Simplicity 7HP 22" Snowthrower (SN: 2000 Up) - Wheels Traction Drive Simplicity 1691518 - Simplicity 7HP 22" Two-Stage Snowthrower - Wheels Traction Drive Simplicity 722E (1692615) - Simplicity 7HP 22" Snowthrower (ES) (ES) - Wheels Traction Drive Simplicity 522 (71691022) - Allis-Chalmers 22" Snowthrower, 5HP - Wheels Traction Drive Group Simplicity 522 (71691126) - Allis-Chalmers 22" Snowthrower, 5HP - Wheels Traction Drive Group Simplicity 522 (71691412) - Allis-Chalmers 22" Snowthrower, 5HP - Wheels Traction Drive If your drive chain is making a popping / clicking noise or sounds like it is binding when it runs, not running as quiet as it once did , the chain is worn/stretched beyond it's service limit and ready to fail. Order replacements now to have on hand for the inevitable. Please measure and verify the actual # of links or the overall length of your drive chain before ordering. If the chain you need is longer or shorter, contact us, we will make one especially for your needs.