ATP 102143 Engine Harmonic Balancer

Buyer fitment guide only intended as reference. Please use catalogue search by vehicle to ensure proper fitment.

• Subaru 12305AA251
• Subaru 12305AA222
• Subaru 12305AA221
• Subaru 12305AA252
• Pioneer DA-250
• Dorman - OE Solutions 594166
• Qualitee International 5012066
• Chromite PC7901
• Venture Products V1165
• Dayco PB1165-N
• Hollander 30950427
• Pioneer Automotive Industries DA-250
• Pioneer DA250
• Pioneer Automotive Industries DA250
• Dayco PB1165N

• The purpose of an harmonic balancer is to absorb crankshaft vibrations. Harmonic balancers are typically constructed in three pieces. The first piece is often called a hub. It bolts to directly to the crankshaft. The hub is surrounded by rubber or fluid which dampens crankshaft vibrations. The outside layer is metal which has grooves on it for the belt. Over time the rubber and/or fluid layer deteriorate causing the outer pulley to shift forward. This causes belt miss alignment and can ultimately result in crankshaft failure. When the harmonic balancer is broken, it must be replaced. ATP Harmonic Balancers fit and function just like the original part restoring the engine to normal operation.