Audi VW Engine Camshaft Follower - INA 03L109521A

Product Information

An Engine Camshaft Follower (also known as a lifter or tappet) is a small component in an internal combustion engine that sits between the camshaft and the valves. Its role is to follow the camshaft’s rotation, translating the cam’s rotational movement into the up-and-down movement that opens and closes the engine’s valves. This enables air-fuel intake and exhaust gas release, which is essential for engine operation.

• Tapping or Clicking Noise: A worn or damaged camshaft follower can cause a distinct tapping or clicking sound from the top of the engine, which is often louder when the engine is cold
• Excessive Valve Clearance: Camshaft followers that have excessive wear can cause increased clearance in the valve train, which can lead to delayed or incomplete valve opening and closing

About INA

Almost every modern passenger car contains an INA engine and transmission component. INA is a global manufacturer of OEM (Original Equipment Manufacturer) roller bearings, linear motion, engine components, plain bearings and precision components meaning that the original parts removed from your car will most likely have INA stamped right on it.

Today INA is a division of the Schaeffler Group, which also includes FAG and LuK, they are the second-largest bearing manufacturer in the world. Their bearings are used in the space shuttle and the Millennium Wheel in London. Schaeffler has manufacturing facilities all around the world including Danbury CT. We offer INA's full line of OE and OEM components for your European vehicle.

INA Timing Components

The timing drive is crucial for the perfect interaction between the camshaft and crankshaft. Power transmission is possible by means of a timing chain or toothed belt. Schaeffler has more than 100 years of experience in the field of chain drives and works continuously on the further development of its products in 18 research and development centers around the globe. Schaeffler is also a leading manufacturer of idler pulleys and mechanical belt tensioners for dry belt drives and belts in oil. The INA program for the independent aftermarket includes repair solutions with all relevant components for time-saving and professional repairs.

Technology leader in valve train

Irrespective of which future technologies will one day be up to date, road traffic cannot be imagined without classic combustion engines for the time being. In order to reduce consumption and emissions, an effective combustion process in the engine is crucial. The valve train is an important lever for achieving this. With its INA brand, Schaeffler is a pioneer when it comes to technical advancements in the valve train.