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Piston Ring Compressor Kit

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Part# 12-10900


The most efficient, versatile and dependable tool of its kind on the market. Designed to operate both vertically and horizontally with fine-tooth ratcheting lock that permits bands to be contracted in extremely small increments. Positive lock insures a free hand. Eliminates broken rings during installation.

Perfect for installing pistons ranging from 2-7/8" to 4-5/8" (73mm to 117mm) in Diameter.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.

In The Box

  • 1-Pliers: 1114
  • 1-Band: 1123 3-7/8 to 4-1/8 In. (98mm to 104mm)
  • 1-Band: 1125 4-3/8 to 4-5/8 In. (111mm to 117mm)


The product is fine, however it should have an option to choose the size of rings, I didnt pay attention and received the unit unaware I was short the 5.5 ring, which left me having to scramble and beg steel borrow a ring to complete the job, it should be noted on the unit web site what size rings it comes with and or an option to choose the rings you want. NIck.

Nick B
October 1, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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