ATP Parts 102040 Engine Harmonic Balancer

OE Replacement Harmonic Balancer for V-Belt Engines

ATP Parts 102040 is an OE Replacement Balancer built to restore crankshaft vibration control and belt alignment on classic GM applications. It is a direct-fit engine harmonic balancer for V-belt setups, including many Chevrolet Camaro, Nova, El Camino, and Pontiac Firebird applications from the 1960s and 1970s.

The ATP Parts OE Replacement Balancer line focuses on fit and function that match the original component, making it a practical choice when the factory balancer is worn, cracked, or no longer keeping the accessory drive aligned.

Key Features

• Engine harmonic balancer for crankshaft vibration damping
• OE Replacement Balancer line for original-style fit and operation
• Standard replacement grade for classic V-belt engines
• 3 pulley grooves
• 3 mounting holes
• Flat drive belt type
• Outside diameter: 6.75 in. / 171.5 mm
• Inside diameter: 1.25 in. / 32 mm
• Depth: 1.5 in. / 38.7 mm

Detailed Description

ATP Parts 102040 is engineered as a replacement harmonic balancer that bolts to the crankshaft hub and helps absorb torsional vibration before it reaches the accessory drive. On older Chevrolet, GMC, Buick, Oldsmobile, and Pontiac engines, a deteriorated balancer can allow the outer ring to shift, which leads to belt misalignment and added stress on the crankshaft. This part restores the original balancer function for vehicles such as Chevrolet Camaro, Chevrolet Nova, and Pontiac Firebird models that use a V-belt configuration.

This part cross-references Pioneer Automotive Industries DA-2501 and Standard Ignition PC1013 for the same application.

What It Helps Fix

• Crankshaft vibration from a worn balancer
• Belt tracking problems caused by ring separation
• Accessory drive misalignment on V-belt engines
• Noise or wobble from a deteriorated harmonic balancer
• Engine damage risk from a failed balancer

Installation Notes and Fitment

Compatible With 1965-1974 Chevrolet Bel Air, N/A; 1965-1969 Chevrolet Impala, N/A; 1966-1974 Chevrolet Camaro, N/A; 1967-1974 Chevrolet Caprice, N/A; 1967-1974 Chevrolet Malibu, N/A; 1967-1974 Chevrolet El Camino, N/A; 1968-1974 Chevrolet C10 Suburban, N/A; 1968-1974 Chevrolet C20 Suburban, N/A; 1968-1974 Chevrolet K10 Suburban, N/A; 1968-1974 Chevrolet K20 Suburban, N/A; 1968-1974 Pontiac Firebird, N/A; 1968-1974 Pontiac LeMans, N/A; 1968-1971 Buick Skylark, N/A; 1968-1971 Oldsmobile Cutlass, N/A; 1969-1974 Chevrolet Blazer, N/A; 1969-1974 Chevrolet Nova, N/A; 1970-1974 GMC Jimmy, N/A; 1970-1974 Chevrolet Bel Air, N/A; 1970-1974 Pontiac Tempest, N/A; 1970-1974 Buick Skylark, N/A; 1970-1974 GMC G35/G3500 Van, N/A; 1970-1974 GMC G15/G1500 Van, N/A; 1970-1974 GMC G25/G2500 Van, N/A; 1970-1974 Chevrolet Impala, N/A; 1971-1974 Chevrolet El Camino, N/A; 1972-1974 Chevrolet Camaro, N/A; 1972-1974 Chevrolet Nova, N/A; 1972-1974 Pontiac Firebird, N/A; 1972-1974 Pontiac LeMans, N/A; 1973-1974 Chevrolet Malibu, N/A; 1973-1974 Oldsmobile Omega, N/A; 1973-1974 Chevrolet El Camino, N/A; 1973-1974 Chevrolet Caprice, N/A.

Verify pulley groove count, outside diameter, and crankshaft hub dimensions before installation. This balancer is listed for V-belt applications and notes OE replacement balancer fitment across the confirmed GM vehicle coverage shown above.

Quality Assurance

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