Our Alternator Pulleys are designed based on the same technology as starter drives. Therefore, they are very robust, have enchanced performance and durability.
The one way clutch system allows the pulley to spin at different speeds than the alternator during acceleration and decelaration. The “overrunning” functions also improves the FEAD´s behavior by reducing tension applied to the belt accessory drive, absorbing backpressure and reducing chirping noise caused by the belt slippage.

ZEN has in the portfolio fixed, OAPs and Decoupler Pulleys. With over 450 part numbers in the catalogue, we are a major global supplier of these products.

Independent global leader in the aftermarket (IAM) and supplier since 1986 for the original market (OEM). The company's strong global presence ensures high quality and robust processes. With more than 1,000 pieces in the portfolio, ZEN has a comprehensive line for the entire global market.

• ZEN’s proven design of one way clutch solutions
• Over 1,000 part numbers of starter drives
• Wide range of applications
• Leader in South America in the OEM and IAM segments
• Exports to over 60 countries

ZEN is a manufacturer of Tensioners since 2009 and has light and heavy duty applications. With a portfolio that covers more than 95% of the Brazilian vehicle fleet, it has become an important supplier to the aftermarket.

With test and simulation laboratories installed in the company, ZEN can guarantee high efficiency and quality warranted for 1 year to all its customers.

It is the same care and quality applied in the electric line, also available in the mechanical line.