Cloyes B20163 Engine Timing Belt

The Cloyes B20163 is an accessory drive belt tensioner assembly designed for serpentine belt systems. Built to meet or exceed OE specifications, this tensioner features precision-machined components and premium materials that help maintain proper belt tension, support smooth engine operation, and reduce wear on the entire accessory drive system. A correctly functioning tensioner is essential to preventing belt slip, noise, and premature failure of belts and driven components.

Key Features:

• Assembled tensioner — ready to install
• Steel pulley with smooth backside contact surface, designed for serpentine belt applications
• OEM-grade construction engineered to meet or exceed original equipment specifications
• Single-pulley design with hex bolt head; single mounting hole
• Silver and black finish
• Mounting bolt not included

Cloyes tensioners are backed by industry-leading warranty coverage and dedicated technical support. For best results, inspect tensioner condition at 60,000 miles and replace alongside the belt, pulleys, and related drive system components at 90,000 miles. Fits select 1993–2011 Cadillac, Oldsmobile, Buick, and Pontiac models. California Prop 65 Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.