1 6

8pc Ratchet Piston Ring Compressor Set, 73–117 mm

Ratcheting plier with seven compression bands for 73–117 mm pistons

8pc Ratchet Piston Ring Compressor Set, 73–117 mm

ST167419

$68.78
$89.99 $68.78
-23% Sold out
Free Shipping
30-Day Free Refund
US Local Warehouse
Free Shipping
30-Day Free Refund
US Local Warehouse

SKU : ST167419
Item Weight : ‎‎4.97 pounds
Product Dimensions :‎ ‎‎‎‎12.01 x 13.78 x 3.54 inches
BAND SIZES INCLUDE:2-7/8” to 3-1/8” (73-79 mm), 3-1/8” to 3-3/8” (79-86 mm), 3-3/8” to 3-5/8” (86-92 mm), 3-5/8” to 3-7/8” (92-98 mm), 3-7/8” to 4-1/8” (98-105 mm), 4-1/8” to 4-3/8” (105-111 mm), 4-3/8” to 4-5/8” (111-117 mm)

1x Ratcheting Compression Plier
7x compression bands
1x Instructions

73–117 mm Ratchet Piston Ring Compressor Set

This set is for compressing piston rings during piston installation. It includes a ratcheting compression plier and seven fixed-size compression bands covering piston diameters from 73–117 mm (2-7/8–4-5/8 in). Select the band by measured piston diameter; vehicle or engine type alone does not confirm fitment.

Choose the Correct Compression Band

  • 73–79 mm (2-7/8–3-1/8 in)
  • 79–86 mm (3-1/8–3-3/8 in)
  • 86–92 mm (3-3/8–3-5/8 in)
  • 92–98 mm (3-5/8–3-7/8 in)
  • 98–105 mm (3-7/8–4-1/8 in)
  • 105–111 mm (4-1/8–4-3/8 in)
  • 111–117 mm (4-3/8–4-5/8 in)

Piston ring compressor set with seven bands for 73 to 117 mm pistons

Use the band whose stated range contains the measured piston diameter. Do not force a band that is too small or attempt to use a band outside its stated range.

Ratcheting Compression Pliers

The ratcheting plier applies incremental compression to the selected band and holds the handle position while the piston is positioned for installation. Keep the band square to the piston and confirm the rings are fully inside the band before moving the piston into the cylinder.

Piston ring compressor band size ranges

Use Notes

  • Measure the piston diameter and choose the matching band range.
  • Align the band squarely with the piston and cylinder opening.
  • Apply ratchet pressure gradually and verify ring compression before installation.
  • Follow the engine manufacturer’s piston and ring installation procedure.

Ratcheting piston ring compression plier

📄 Download Manual PDF View full details

FAQ

How do I choose the correct compression band?

Measure the piston diameter, then select the band whose stated range contains that measurement. The seven bands cover 73–117 mm in fixed size ranges; do not force a band outside its range.

Will this set fit my engine?

Fitment depends on the measured piston diameter, not vehicle type alone. Confirm that your piston diameter falls within one of the included 73–117 mm band ranges before ordering.

How does the ratcheting plier help during installation?

The ratchet lets you apply compression in increments and holds the selected position. Keep the band square to the piston and check that the rings are fully compressed before installation.