0732040386 Compression Spring: Matches ZF16S2220, 16S2230 ZF 16-speed transmission, belonging to rear synchronous drive assembly. Produced with high-temperature resistant spring steel with accurately controlled wire diameter and coil pitch for steady long-lasting elasticity. Provides preload positioning for synchronizing parts to reduce shifting jerk and delayed synchronization. Hardly deforms under bumpy overloaded driving conditions for multiple heavy truck models, cost-effective replacement for repair service.