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While it may look like some prop key out of a bad treasure movie, this $12 cube-shaped tool from Lisle is actually for rotating the piston back into the caliper when replacing rear disc brake pads.

The tool features a different pin configuration on each of its six faces to fit most domestic vehicles and some imports.  Fit a 3/8″ ratchet with an extension into one of the cube’s square drive holes, then simply push and turn the tool to rotate the piston into the caliper.

Disc Brake Piston Tool [Lisle]
Street Pricing [Google]
Via Amazon [What’s This?]


17 Responses to Key To Solomon’s Gold Or Disc Brake Piston Tool?

  1. Toolaremia says:

    I have one of these. I did the chain-nose plier thing for years, and this is better. Worth every penny. Lisle is my favorite tool company.

  2. Keith says:

    I’ll second the thumbs up; I have one of these, and in my case it works much
    better than fitting a square shank flat blade screwdriver into the grooves in
    the piston face and trying to rotate the piston back in without catching and
    tearing the piston boot with the screwdriver.

    Lisle makes some pretty decent tools (check out their oil filter wrenches;
    http://www.lislecorp.com/tool_detail.cfm?detail=1214 and/or
    http://www.lislecorp.com/tool_detail.cfm?detail=1224 ) – and I believe most of
    Lisle’s tools are still made in the US.

  3. Jim says:

    For the occassional user, Harbor Freight has it for $3.99, ITEM 95713. Cheap enough to throw in your shopping cart on your next order so you have it if you need it. JIM

  4. Old Donn says:

    This is one of those things you don’t need,,,, till you need it. Even if it sits in the tool box for a year, one use and it pays for itself.

  5. BC says:

    *shrug* On all the vehicles I’ve ever done, a c-clamp and a piece of scrap wood worked just fine.

  6. Harry says:

    This tool is for rotating the rear disc brake piston inward. It’s for those type of calipers where the parking brake is integral to the caliper. You can’t use a C clamp and a block of wood on these, the piston has to be screwed inward and will not budge with pressure only. It’s a simple but, effective tool.

  7. This guy says:

    And in the times a changing category, there are some cars today that use electric-mechanical parking brakes, a OEM level scan tool is needed to reset the parking brake so that the piston can then be pushed back into the caliper. The current VW Passat is like this, more cars will follow.

  8. Paul says:

    I have tried one of these before on a couple of older GM cars. I hated every minute using it. Instead I got one of these http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=40732 . Works a MILLION times better and it’s just easier to use. Worth the $20.

  9. ambush says:

    MAC makes one like the one paul showed too, rumor has it that they’re also coming out with one threaded the other way to make it easier to use on certain calipers. Its worth mentioning that they can rotate either way.

  10. Jereme Green says:

    Any tool made for taking off bake brakes is a good tool bake brakes can be challenging

  11. Old Donn says:

    Aside to BC. Use a C-clamp & block of wood on a piston that rotates in and see what happens.

  12. Mitch says:

    I was surprised at the initial comments saying how good this tool is. I thought maybe I didn’t use it correctly. But I had Paul’s exact same experience. That kit he links to worked much better for me too. This wasn’t worth even the $4 it costs from HF

  13. melvin says:

    I need this one weekend doing the brakes on my Fiero and no one in town even new what Iwas talking about let alone had one in stock. I ended up jacking around for an hour or two each with a couple of punches and a piece of wood. Wish I would have thought of using a set of chain pliers. I had one of these cubes in my shopping cart so fast when I finally saw one in a store I think it was still smokin’ from the air friction when I went up to pay for it.

  14. arby says:

    For a VW, nothing beats the brake reset tool from Metalnerd – http://www.metalnerd.com/cat08.htm Pricey, but well worth it!

  15. james b says:

    My old gen 2 Subaru had the rotating pistons on the front brakes. The had two notches that accepted a screwdriver for rotating. It took me lots of squeezing to figure out the rotated, then had to pull the tires on and off about four times to get it proportioned right. But hey, at least they were just little 13s.

  16. Josh says:

    I agree with Paul, I tired to use one of these on a mustang and it did no fit There was one design that was close, but was backwards. Spend the $20 get the complete kit and you will be much happier.

  17. gearhead says:

    I agree with the nay sayers. Pros don’t use this tool. There are a hundred better options out there. If you are a pro and you use this tool, you probably aren’t working flat rate. This thing is very difficult to to use, just imagine turning your ratchet and pushing in very hard at the same time. You have to push hard because the “bumps” on the tool do not stay in the grooves on the piston. The other tools use a turning and “press” action at the same time.

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