OptiTorque Harmonic Balancer Bolt - GM Duramax 19-221 1971-1973 Oldsmobile Delta 88

1971-1973 Oldsmobile Delta 88

Ford Fullsize Truck 1983-87

They all feature a rolled edge outlet profile and are available in a variety of inlet and outlet sizes

exclusive longer-than-standard nut-starter

OptiTorque Harmonic Balancer Bolt - GM Duramax 19-221 1971-1973 Oldsmobile Delta 88Product 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.