This is a genuine manufacturer sourced replacement part designed for use with Bostitch staplers. The purpose of this piston bumper is to keep the piston from hitting the bottom of the cylinder and damaging it. Because this part get so much abuse it has a tendency to crack and fall apart. If you see any pieces of this bumper falling out from your nail gun, it is definitely time to replace it. This item is made out of plastic material and it is sold individually.
1. Removed 4 machine screws to disassemble the back side of the nailer.
2. Removed cylinder and piston (no tools)
3. Removed bumper with channel lock pliers
4. Cleaned tool for assembly
5. Installed new bumper
6. Lubricated o rings
7. Reassembled the nailer
New drive bumper was the tight fit, needed to hammer it in using a stiff plastic vacuum nozzle. If I had a piece of wood the right size it would\'ve worked too. O-rings were easy once i found em all. Gun shoots fine after it was cleaned and reoiled.
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Stock Status
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
