OptiTorque Harmonic Balancer Bolt - GM Duramax H777C06L These standards also ensure ACTs

These standards also ensure ACTs street products provide the performance demanded

Merlin and Rocket racing blocksMust be used with an MSD Ignition ControlSupplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)O-ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearNylon pads ensure smooth operation of the advance weightsAdvance weight pins are staked and tig welded to the plateMechanical advance assembly can be locked out for crank trigger systemsAdvance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reductionPolished steel shaft is QPQ coated and guided by a sealed ball bearing and long sintered bushingMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeAdjustable slip collar mounting flange provides up to 3” of adjustmentCNC machined billet aluminum housing and Dupont Rynite baseNo CARB Exemption Order Number

1 Year Replacement Warranty

Sold as a pair

to heat-treating the finished product

OptiTorque Harmonic Balancer Bolt - GM Duramax H777C06L These standards also ensure ACTsProduct Description: Harmonic Balancer Bolt 18 mm x 1. 50 Thread 2. 75 in Long 36 mm 12 point Head Steel Black Oxide GM Duramax Sold Individually OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.