John Deere S169M Extension Spring

The John Deere S169M is an original equipment manufacturer extension spring designed for tensioning applications in riding mowers and lawn tractors. This tightener spring features a wire diameter of 0.092 inches (2.34 mm), outside diameter of 0.684 inches (17.37 mm), and free length of 4.940 inches. The spring rate is 11.970 LBF per inch with an initial tension of 8.500 LBF across 41 active coils. End type configuration is 07/07. Manufactured to John Deere specifications for reliable performance in deck drive and attachment tensioning systems. This component serves as a direct replacement for OEM part number S169M across multiple John Deere equipment series including 100, 200, 300, and 400 series riding mowers, S80/S82/S92 series, zero-turn mowers, and select utility vehicles. The spring is constructed from spring steel for fatigue resistance and consistent force output over extended service intervals.