INA 535029610 BDC FEAD Overrunning Alternator Pulley

Description

The INA 535029610 BDC FEAD Overrunning Alternator Pulley is a critical component within the front-end accessory drive (FEAD) system of a vehicle. It decouples the alternator from torsional vibrations originating from the engine, preventing damage and reducing noise. This pulley is specifically designed for BDC systems. Manufactured in Germany, this pulley measures 62 x 92 x 113 mm. By damping vibrations and reducing stress on the belt drive system, this overrunning alternator pulley extends the life of the alternator and improves overall engine reliability.

Key Features & Benefits

This pulley basically lets the alternator spin freely in one direction, but transmits power in the other. Think of it like a one – way clutch. It allows the engine’s belt to drive the alternator to charge your battery and run electrical systems, but it disengages when the alternator starts to spin faster than the belt – like when you rev the engine quickly or shut it off. It smooths things out. It’s part of your front end accessory drive – that’s the system that runs your alternator, power steering pump, and sometimes the AC compressor, all powered by a single belt. This specific pulley is for the alternator. It’s positioned between the belt and the alternator shaft.

Symptoms, Risks & Replacements

This pulley prevents a few things from happening. Without it, when you quickly change engine speed, the alternator could actually try to drive the engine belt instead of being driven by it. That causes a lot of strain on the belt, the alternator bearings, and even the engine itself. It also creates a really irritating squealing or rattling noise. It acts like a shield, protecting those components from shock and wear. You’ll notice if this pulley fails – you'll probably hear a pretty loud noise, especially when starting or shutting off the engine, or if the belt starts slipping and you get a charging light. We carry a good selection of these at Fixparts Online, and replacing it when it goes bad is a lot cheaper than replacing the alternator or a damaged belt.

Warranty Information

INA BDC FEAD Overrunning Alternator Pulley (MPN 535029610) comes with a 1-year warranty.