Genuine BMW Engine Harmonic Balancer & Crank Pulley - BMW Gen1 B46 (B46A)

Product Details

During the combustion cycle, each ignition pulse results in a small amount of torsional vibration. As RPMs rise, these vibrations can reach a resonant point, which stresses the crankshaft and can cause metal fatigue, cracks, or even the crankshaft snapping.

Luckily, this is easily managed by your engine's harmonic balancer, which acts as a shock absorber at the front of your crankshaft. The harmonic balancer, also called a crankshaft damper, is made from multiple layers of metal and rubber, which absorb these vibrations to remove the harshness caused during engine operation, protecting your engine and main bearings from damage.

Common symptoms of a failing harmonic balancer include:

• Abnormal Engine Vibrations
• Squeling / Chirping Noises
• Visual Wobble or Separation of the metal and rubber layers
• Cracked and/or hardened rubber
• Serpentine Belt Misalignment

Replace your harmonic balancer with a brand new unit from BMW to ensure your engine and bearings are properly protected from vibrations.

Prop 65 Warning

Product Q&A

Lifetime Replacement

Fits These Cars