Astro Tools Ball Joint Puller 78620A

A seized ball joint can turn a straightforward suspension repair into a fight, especially when rust has locked the joint in place. The Astro Tools 78620A is designed to pull bolt-in ball joints without rotating the stud.

You can use it with a deep 24mm socket and an impact or hand wrench while the vehicle is on jack stands. An included 5/8-18 thread adapter also lets you use a common slide hammer.

If you prioritize working with a wrench at the vehicle, the socket setup fits that approach, if you prefer a slide hammer, the adapter gives you that route instead. Neither method removes the need for the matching tool.

Where it shines

Its main distinction is the sliding pin’s non-rotating design. The pull happens in one motion without spinning the ball joint stud, which is intended to reduce the chance of breaking the joint during removal. That matters most when a bolt-in joint is seized, rusted, or corroded—not when you’re simply looking for a general-purpose suspension tool.

For a practical example, picture a Subaru on jack stands with a joint that will not release during a repair. Rather than keep turning against a stuck stud, you can set up the puller with a wrench or attach the included adapter to a slide hammer and pull the joint out. Without having tried it, the design’s clearest advantage is that focused, non-rotating action.

The product is listed for Subaru Baja models from 2003+, Forester from 1998+, Impreza from 1993+, Legacy from 1990+, and Outback from 2000+, among others. The “and more” wording does not identify additional vehicles, so treat the named applications as the useful starting point rather than assuming universal Subaru fitment.

What matters most

This is a removal tool for bolt-in ball joints, not a complete repair kit. The two stated setups are a deep 24mm socket paired with an impact or hand wrench, or the included 5/8-18 adapter paired with a common slide hammer. If you do not have either setup, the puller alone may not be enough to complete the job.

Worth considering if you work on one of the listed Subaru applications and need a dedicated way to tackle a stubborn joint. Better avoided if you need a tool for other joint styles, expect it to cover unlisted vehicles without checking fitment, or want an all-in-one kit. A more basic removal approach may suit an easy-to-release joint, this tool’s design is aimed at the harder, seized cases.

Best use cases

The strongest fit is a bolt-in ball joint that has resisted normal removal, especially on one of the listed Subaru model lines. It also makes sense for a repair setup where you already have the specified socket and wrench, or a common slide hammer for use with the adapter. The product description does not give care or storage instructions, so there is no specific maintenance routine to factor into the decision.

Final verdict

The Astro Tools 78620A has a clear purpose: pulling difficult bolt-in ball joints with a non-rotating action, using either a wrench-based setup or a slide hammer. It is a focused choice for the stated Subaru applications, not a universal suspension solution. Choose it when the joint type and vehicle match and you have one of the required tools, skip it if your vehicle is outside the listed fitment or you need broader removal-tool coverage.