Hammer Engines

The piston fits between the valve case and the cylinder. This is an OEM Chicago Pneumatic part directly sourced from the manufacturer for use in air hammers. This item is sold individually and is made out of metal. You may need a set of pliers when replacing this part. It will need to be replaced if it becomes broken.

This is a genuine OEM sourced component which is specially designed for use with Makita rotary hammers. It is the part of the nail gun that drives the impact bolt, unfortunately, over time it may wear out or get damaged eventually requiring a replacement. To help extend the life of a pneumatic tool use the specified oil in it daily 4-5 Drops will do every time you use it. Please make sure to refer to the owners manual of your model for the correct location and application of this part. Keep in mind this high-quality item is made of durable metal and is sold individually.

Restore the impact performance of your rotary hammer with this replacement piston, a critical internal component that generates the striking force needed for drilling into concrete, masonry, and other tough materials. By converting the tool's internal motion into powerful hammering action, it helps deliver consistent impact energy and reliable drilling performance. A worn or damaged piston can lead to reduced impact power and inconsistent operation, making replacement an important repair for maintaining tool performance. Because the piston is located within the tool's hammer mechanism, refer to your tool's parts diagram or service manual to confirm the correct placement before installation. Sold individually.

This is a genuine OEM supplied part that is specially designed for Makita rotary hammers. It is the part that the piston is attached to. Over time it may wear out or get damaged eventually requiring a replacement. Please note one durable metal connecting rod is included. Refer to the appropriate diagrams for your model to ensure the correct repair procedure. A screwdriver will be needed to take apart and reassemble the unit.

This genuine OEM approved part is designed for use with DeWALT demolition hammers. It is the part of the tool that helps to drive the main shaft. Unfortunately, over time the components may wear out, get damaged or even lost eventually requiring replacements. This high-quality piston is made of durable metal and is sold individually. Refer to the owners manual and the diagrams of your model for the correct installation of this part. Note, the #487234-00 Connecting Rod that holds the piston is sold separately.

This piston ring is an authentic OEM sourced item that is specially designed for Makita demolition hammers. It is one of the rings that helps to create an air tight seal between the piston and the cylinder walls. Note that a worn or a damaged piston ring will allow combustion gases to escape the seal causing low compression and the loss of power. One durable metal piston ring is included per order. To replace it you will need a hex key also called an allen wrench.