ATP Parts 102257 Engine Harmonic Balancer

OE Replacement Harmonic Balancer for Nissan Altima

ATP Parts 102257 is an OE Replacement Balancer built to restore crankshaft vibration control and belt alignment in the engine. It is a direct-fit harmonic balancer for select 1998-2001 Nissan Altima applications, including double-serpentine setups with 6- and 4-groove pulley configurations.

The ATP Parts OE Replacement Balancer line focuses on standard replacement parts that match original fit and function. For Nissan Altima owners servicing the crankshaft pulley area, this line provides a practical OE-style solution for restoring normal engine operation.

Key Features

• Part number 102257 harmonic balancer for select Nissan Altima models
• OE Replacement Balancer line from ATP Parts
• Standard replacement grade for direct-fit service
• Inside diameter: 1.1875 in. / 30 mm
• Outside diameter: 6.3125 in. / 160 mm
• 4 pulley grooves and 4 mounting holes
• Serpentine drive belt type
• Fits 1998-2001 Nissan Altima, N/A

Detailed Description

A harmonic balancer absorbs crankshaft vibration through a hub and damping layer, with an outer metal pulley surface that drives the belt system. Over time, the damping material can deteriorate and allow pulley movement, which can lead to belt misalignment and added stress on the crankshaft. ATP Parts 102257 is engineered as an OE replacement harmonic balancer to match the original part’s fit and function on compatible Nissan Altima applications. This part number 102257 is a direct service option for 1998-2001 Nissan Altima vehicles listed with double serpentine and groove-quantity-specific configurations.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Can Address

• Crankshaft vibration from a worn balancer
• Belt misalignment caused by pulley shift
• Noise from a deteriorated damping layer
• Visible wobble or separation at the harmonic balancer
• Drivetrain stress related to a failing crankshaft pulley assembly

Installation Notes and Tips

Verify pulley groove count, outside diameter, and mounting-hole pattern before installation. Confirm the vehicle is a 1998-2001 Nissan Altima with the listed double-serpentine configuration before ordering ATP Parts 102257. Inspect the crankshaft snout, belt condition, and adjacent pulleys during replacement, and follow factory service procedures for torque and alignment.

Quality Assurance

ATP Parts positions this OE Replacement Balancer line as a standard replacement solution that follows original fitment and function requirements for the application. For Nissan Altima service, 102257 is built to restore normal engine operation when the original harmonic balancer has failed.