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1966-1969 Corvette Harmonic Balancer Big Block

Item EK-25-101552-1
1966-1969 Corvette Harmonic Balancer Big Block
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Market Price $215.04 You Save 13% ($28.05) Up to 10% off for Military & First Responders! See Details

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      Product Information

      Features, Description, Q&A


      • High Quality Replacement Harmonic Balancer
      • Replaces Broken, Worn, Or Damaged Factory Harmonic Balancers
      • Replaces OE# 3860008
      • 7" OD Without Pulley, Ductile Steel & Stress Resistant Rubber Construction
      • Includes 2 Woodruff Keys, Bolts, Washers, And Installation Instructions
      • Requires Harmonic Balancer Puller P/N 88-0110-1, Sold Separately
      • Fits 1966-1969 Big Block 427 390HP & 427 400HP Aluminum Head Corvettes
      • Limited Lifetime Manufacturer's Warranty


      The harmonic balance on your factory big block 1965-1969 Corvette is a critical components of your engine. It attaches directly to the front of your engine on the crankshaft. It reduces torsional vibrations created by your engine as the cylinders fire. Without the balancer, your engine would vibrate so much that it would cause rapid engine failure. Harmonic balancer failure is a direct result of heat stress, wear due to road salt, crankshaft failure, stress caused by integrated drive pulleys.

      So, when you need to replace your balancer, the solution is this high quality balancer from Eckler's Corvette. This one features steel construction with improved tensile strength, impact strength, and stress-resistant rubber bond. It's resistant to heat, salt, ozone, and general wear a


      • 1966 Chevrolet Corvette
      • 1967 Chevrolet Corvette
      • 1968 Chevrolet Corvette
      • 1969 Chevrolet Corvette

      CA Residents: WARNING: Cancer and Reproductive Harm -

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