Litens

Litens Automotive: The Original Inventors of the Automatic Belt Tensioner

Few brands can claim to have genuinely changed the course of automotive engineering — Litens Automotive Group is one of them. Founded in 1979, Litens made history by developing and producing the world's first automatic tensioner for the accessory drive belt, debuting on the 4.9L V-8 Ford Mustang and Mercury Capri. That single breakthrough eliminated the tedious, error-prone process of manually adjusting belt tension, ushering in a new era of reliability and performance for belt drive systems everywhere.

From those pioneering roots, Litens grew into a globally recognized leader in powertrain system engineering. The company went on to become the first production supplier of OE tensioners not only in North America — supplying both Ford and General Motors — but also in the European and Japanese markets. Today, Litens technology is found in more than half of all vehicles on the road worldwide, a testament to the brand's enduring influence on how modern engines are built and serviced.

Engineering Excellence Across Every Belt Drive Component

Litens has always centered its innovation on one guiding principle: simplify complex repairs without sacrificing performance. This philosophy is evident across their full lineup of belt drive components. Their A/C Drive Belt Tensioners and Drive Belt Tensioners are the backbone of the Litens catalog, engineered with proprietary, technician-first features that make installation faster, safer, and more intuitive — even in the tightest engine compartments. Exclusive innovations like their lift access point and TAP™-enabled Easy Button™ latch reduce installation time and help minimize costly callbacks.

Beyond the accessory drive, Litens is equally dominant in the world of timing systems. Their Engine Timing Belt Tensioners undergo tens of thousands of hours of bench testing and hundreds of thousands of kilometers of vehicle validation alongside OEM partners. Patented features ensure consistent belt tension and damping over the life of the engine, along with enhanced tooth-skip protection at low temperatures — critical safeguards for engines where timing is everything.

Litens also engineers precision Alternator Pulleys, including their renowned Overrunning Alternator Decoupler (OAD™), which smooths out rotational irregularities in the drive system to reduce noise, vibration, and component wear. For those looking to restore an entire belt drive system to OE-level performance in one service, Litens offers comprehensive Drive Belt Kits that bundle the tensioners, pulleys, and hardware needed for a complete, confidence-inspiring repair.

Why Technicians and Enthusiasts Trust Litens

Litens is not simply a supplier — it is the company that invented the category. With manufacturing facilities and development centers spanning North America, Europe, Brazil, China, and India, Litens delivers consistent OE-quality components at every level of the market. Whether you are a professional shop looking to minimize comebacks or a dedicated DIYer demanding the best for your build, Litens parts are engineered to perform at the same standard as the components that left the factory floor.