## Timing Chain Tensioner Sprocket 139FMB 50 4T AC - Reliability and Precision The 139FMB 50 4T AC timing chain tensioner sprocket is a crucial component of the timing system, ensuring smooth and precise engine operation. Made from high-quality materials, it guarantees long life and resistance to wear. ### Technical Specifications: * **Number of teeth:** 18 * **Chain type:** 428 * **Centering hole diameter:** 10mm * **Sprocket thickness:** 9mm * **Outer diameter of the sprocket:** 34mm ### Why choose the 139FMB tensioner sprocket? The 139FMB tensioner sprocket guarantees trouble-free operation. Precise manufacturing and attention to detail translate into optimal engine performance, and the high quality of materials ensures long-term reliability. A perfect fit for 139FMB 50 4T AC models guarantees easy installation and seamless integration with the timing system.