ATP Parts 102281 Engine Harmonic Balancer

OE Replacement Harmonic Balancer for Sentra

ATP Parts OE Replacement Balancer 102281 is a standard replacement harmonic balancer built to absorb crankshaft vibration and help keep the accessory drive running smoothly. It is a direct-fit engine harmonic balancer for select 2000-2006 Nissan Sentra applications with a serpentine belt setup.

For Nissan Sentra owners searching for an OE replacement harmonic balancer, Part Number 102281 restores the function of the original crankshaft damper and supports proper belt alignment. ATP Parts 102281 is made to match the fit and function of the factory part.

Key Features

• OE Replacement Balancer from ATP Parts
• Part Number: 102281
• Standard replacement grade
• Serpentine drive belt type
• Inside diameter: 1.1875 in. / 30 mm
• Outside diameter: 6 in. / 152 mm
• Depth: 1.75 in. / 44 mm
• Designed for select double-serpentine Nissan Sentra applications

How It Works

The harmonic balancer mounts to the crankshaft hub and uses an internal damping layer to reduce engine vibration. Over time, the rubber or fluid element inside the balancer can deteriorate, allowing the outer pulley to shift and throw the belt out of alignment. When that happens, the balancer should be replaced to help prevent further drivetrain and crankshaft damage. This ATP Parts 102281 balancer is built as an OE-style replacement for the original component on compatible Nissan Sentra models.

This part cross-references Pioneer Automotive Industries DA-1786 for the same application.

Common Problems It Can Address

• Crankshaft vibration at idle or under load
• Belt misalignment on serpentine drive systems
• Worn or separated harmonic balancer damping material
• Accessory drive noise caused by pulley wobble
• Damage risk from a failing crankshaft damper

Installation Notes

Verify pulley groove count, outer diameter, and crankshaft fitment before installation. This balancer is listed for 2000-2006 Nissan Sentra models with groove quantity 4, 4 and double-serpentine configuration notes. Inspect the crankshaft snout, belt condition, and surrounding accessory drive components during replacement to confirm the new balancer seats correctly and runs true.

Quality Assurance

ATP Parts OE Replacement Balancer 102281 is engineered as a standard replacement part that matches the original balancer’s fit and function for the listed Nissan Sentra applications. It is intended to restore normal engine operation when the original harmonic balancer has failed.

• Fits 2000-2006 Nissan Sentra, N/A