ATP 102040 Engine Harmonic Balancer

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

• Pioneer DA2501
• Pioneer DA-2501
• Dorman - OE Solutions 594014
• Chromite PC1013
• LODI P-GM250A
• Dayco PB1027-N
• EngineQuest BA250N
• BM USA 6250E
• NAPA 6005204
• Venture Products V1005
• General Motors 3896590
• Hollander 309119
• Pioneer Automotive Industries DA2501
• Pioneer Automotive Industries DA-2501
• Dayco PB1027N

• 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.