Moker 66515 LS Harmonic Balancer Installer for Chevy SBC & BBC Cranks — Threaded-Rod with Thrust Bearing

The Moker 66515 LS harmonic balancer installation kit is a compact, steel threaded-rod tool set that lets you press-fit harmonic balancers onto Big Block and Small Block Chevy crankshafts quickly and accurately.

If you service or rebuild SBC (Small Block Chevy) or BBC (Big Block Chevy) engines, getting the harmonic balancer seated straight and square is essential. This kit supplies the correct thread sizes and a thrust bearing so you can use simple turning force from a nut to draw the balancer onto the crank without damaging the hub or crank nose. It’s sold as a complete kit and built to withstand shop use.

How does this tool make installing a harmonic balancer easier?

The installer converts rotational torque into steady axial pressure so the balancer slides on evenly instead of pounding or misaligning. By threading the appropriate end into the crank and tightening the nut against the bearing, the balancer is drawn on under control.

• Includes 5/8 in.-16 and 7/16 in.-16 threaded ends to match common Chevy crank threads.
• Thrust bearing reduces friction and guides the balancer smoothly.
• Turn a single nut to apply uniform, controlled pressure during installation.

Which Chevy engines and crankshafts will this Moker kit fit?

This tool was designed with Big Block and Small Block Chevy crankshafts in mind and covers the typical thread sizes used on many SBC and BBC engines. It’s a universal-style installer for those common crank threads rather than a vehicle-specific part.

• Compatible with many Small Block Chevy (SBC) crankshafts.
• Compatible with many Big Block Chevy (BBC) crankshafts.
• Two threaded end sizes accommodate a range of crank nose thread patterns.

What components come in the Moker 66515 installation kit?

The kit includes all pieces needed to complete the press-fit without extra purchases: a single threaded rod, a nut, washers and the thrust bearing. Everything is sized to work together so you can get started immediately.

• One threaded rod with both 5/8 in.-16 and 7/16 in.-16 end options.
• One heavy-duty nut sized for drawing the balancer on.
• Washers and a thrust bearing to protect surfaces and reduce heat/friction.

Is the Moker balancer tool durable and backed by warranty?

The tool is manufactured from high-quality steel to handle the torque and repeated use typical in a workshop. Moker includes a limited 90-day factory warranty that covers workmanship and basic defects for added confidence.

• Constructed from durable steel for repeated shop use.
• Thrust bearing designed to resist wear during installation operations.
• 90-day limited factory warranty on the kit.

Who is this for: This Moker 66515 installer kit is ideal for mechanics, home engine builders, restorers and anyone who frequently removes and installs harmonic balancers on Chevy SBC or BBC engines. If you want a low-cost, durable solution for seating balancers without risking damage from hammers or improvised pullers, this threaded-rod and thrust bearing kit simplifies the job and speeds up reassembly.