Mercedes-Benz Passenger A6420521801 Camshaft Gear

Description

The Camshaft Gear is a precision-engineered component that drives the camshaft, ensuring accurate timing and efficient power transfer. It is installed in the camshaft pulley assembly of Mercedes-Benz passenger vehicles. This gear delivers robust performance, low wear, and reliable operation under high engine loads. Manufactured by Mercedes‑Benz Passenger, its MPN is A6420521801. The gear measures 40 × 120 × 120 mm and is produced in Germany.

Key Features & Benefits

This gear’s job is pretty straightforward. It connects directly to the camshaft and spins it, timed perfectly with the crankshaft down below. It receives power from the timing belt or chain, and basically passes that rotational force onto the camshaft, which then opens and closes the engine's valves. It’s a key piece of making everything happen inside the engine. Think of it as a translator – it takes the engine's overall motion and turns it into the specific valve timing the engine needs. It’s part of the whole timing system. That system makes sure all the engine's internal parts – pistons, valves, everything – work together at the right time. If the timing is off, even by a little bit, the engine won’t run right, or maybe not at all. It’s pretty fundamental. It’s not something you see directly, obviously, it’s tucked away inside the engine.

Symptoms, Risks & Replacements

It’s crucial because it directly impacts how the engine runs. A worn or damaged camshaft gear messes up the valve timing, leading to all sorts of problems. You’ll notice if it’s going bad – things like rough idling, loss of power, engine misfires, or even a complete refusal to start. It acts like a shield for the camshaft itself, taking a lot of the stress from the timing belt or chain. When that gear wears, it can take the camshaft with it, which gets expensive real quick. You can find replacements pretty easily – Fixparts Online carries a good selection, and replacing it when you’re doing a timing belt job is always a smart move, just preventative maintenance. It's one of those parts where a little investment now can save you from a major headache down the road.

Warranty Information

Mercedes-Benz Passenger Camshaft Gear (MPN A6420521801) comes with a 1-year warranty.