ATP Parts 102039 Engine Harmonic Balancer

OE Replacement Harmonic Balancer

ATP Parts OE Replacement Balancer 102039 is a standard replacement harmonic balancer built to absorb crankshaft vibration and help keep belt drive operation stable. It is a direct-fit engine harmonic balancer for select Chevrolet applications, including classic Camaro, Impala, Bel Air, and Corvette models.

ATP Parts 102039 is part of the OE Replacement Balancer line, focused on restoring original fit and function for engine vibration control and accessory drive alignment.

Key Features

• Standard replacement harmonic balancer for engine vibration damping
• Inside diameter: 1.625 in. / 41 mm
• Outside diameter: 7 in. / 177.7 mm
• Depth: 2.6875 in. / 68 mm
• 3 pulley grooves with flat drive belt type
• 3 mounting holes and keyway design
• OE-style replacement for solid balancer applications

Detailed Description

The harmonic balancer is mounted to the crankshaft hub and uses an internal damping layer to reduce torsional vibration. Over time, the rubber or fluid element can deteriorate, allowing the outer pulley section to shift and throw belt alignment off. That condition can lead to noise, accessory drive issues, and crankshaft stress. ATP Parts 102039 is engineered as an OE replacement harmonic balancer to restore normal engine operation on compatible Chevrolet vehicles, including 1966-1972 Chevrolet Impala, 1967-1972 Chevrolet Camaro, and 1966-1969 Chevrolet Corvette applications.

This part cross-references Pioneer Automotive Industries DA-396 for the same application. ATP Parts 102039 is also listed with interchange references including 309116 and 594030.

What It Helps Address

• Crankshaft vibration from a worn or failed balancer
• Belt misalignment caused by pulley shift
• Accessory drive noise related to harmonic imbalance
• Visible cracking or deterioration in the balancer damping material
• Engine operation issues tied to a damaged crankshaft balancer

Installation Notes and Tips

Verify the inside diameter, outside diameter, depth, groove count, and keyway style before installation. This balancer is for solid OE replacement applications with a 6.99 in. outer diameter note in the fitment data. Confirm crankshaft and pulley alignment during installation, and inspect the belt system for wear before returning the vehicle to service. Compatible With 1966-1972 Chevrolet Impala, 1967-1972 Chevrolet Camaro, and 1966-1969 Chevrolet Corvette applications listed in the fitment data.

Quality Assurance

ATP Parts OE Replacement Balancer products are built to match original part fit and function, helping restore the engine to normal operation when the original harmonic balancer has failed.