Order Today to get your equipment back to in top shape. SIMPLICITY Snow Blower / Tiller Replacement Drive Chain These rugged drive chains are made as an ENDLESS LOOP and measure 27" with 54 pins/rollers overall WITHOUT a master joiner link. Our Premium #40 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. Made as an Endless Loop to improve strength and durability. Chain Pitch: 0.500" Roller Diameter: 0.312" Roller Width: 0.312" Pin Diameter: 0.156" Plate Thickness: 0.060" Tensile strength: 3800 Pounds This part is compatible with the following machines: Simplicity 1005 (1690209) - Simplicity Sno-Away 5HP 24" Two-Stage Snowthrower - Engine, Pulley Drive Group Simplicity 1008 (1690255) - Simplicity Sno-Away 8HP 28" Two-Stage Snowthrower - Engine, Pulley Drive Group Simplicity 524 (1690379) - Simplicity Snowbuster 24" Snowthrower - Engine, Pulley Drive Group Simplicity 828 (1690380) - Simplicity Snowbuster 28" - Engine, Pulley Drive Group Simplicity 1690382 - Simplicity Snowbuster 5HP 24" Snowthrower - Engine, Pulley Drive Group Simplicity 1690383 - Simplicity Snowbuster 8HP 28" Snowthrower - Engine, Pulley Drive Group Simplicity 724 (1690442) - Simplicity Snowbuster 24" Snowthrower - Engine, Pulley Drive Group Simplicity 1690465 - Simplicity 7HP 24" Snowthrower - Engine, Pulley Drive Group Simplicity 524 (1690586) - Simplicity Snowbuster 5HP 24" Two-Stage Snowthrower - Engine Drive Group Simplicity 724 (1690587) - Simplicity Snowbuster 7HP 24" Two-Stage Snowthrower - Engine Drive Group Simplicity 828 (1690588) - Simplicity Snowbuster 8HP 28" Two-Stage Snowthrower - Engine Drive Group Simplicity 1028 (1690589) - Simplicity Snowbuster 10HP 28" Two-Stage Snowthrower - Engine Drive Group Simplicity 1690590 - Simplicity Sno-Pro 5HP 24" Snowthrower - Engine Drive Group Simplicity 1690591 - Simplicity Sno-Pro 7HP 24" Snowthrower - Engine Drive Group Simplicity 1690592 - Simplicity Sno-Pro 8HP 28" Snowthrower - Engine Drive Group Simplicity 1690593 - Simplicity Sno-Pro 10HP 28" Snowthrower - Engine Drive Group Simplicity 990643 - Simplicity Sno-Away 7HP 28" Two-Stage Snowthrower - Pulley Group (07000000) Simplicity 990870 - Simplicity Sno-Away 7HP 28" Two-Stage Snowthrower - Pulley Group (07000000) Simplicity 1690039 - Simplicity 36" Tiller - 36" Tiller-Housing Group Simplicity 990694 - Simplicity 36" Rotary Tiller - HOUSING GROUP Simplicity 1696360-00 - Simplicity 36" Tiller - Housing Group (2984364) Simplicity 990503 - Simplicity 36" Heavy Duty Tiller - HOUSING GROUP Simplicity 990545 - Simplicity 36" Heavy Duty Tiller - HOUSING GROUP Simplicity 1691978 - Simplicity 36" Tiller - 36" Tiller - Housing Group 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.