This replacement piston bumper is an authentic OEM item. It is specially designed for Hitachi nailers. This part acts as a cushion when the piston retracts back into the cylinder after being fired. Because this part gets so much abuse it has a tendency to crack and fall apart. If the part is damaged or falls out you will need to replace it. It is made of high-quality material and is sold individually. To complete this repair you would need a Hex key also known as an Allen wrench. Check the owner's manual and the appropriate diagrams for the correct application.
Troubleshooting
This part works with the following brands:
Hitachi
This part works with the following products:
Nailer
Part# 887170 replaces these:
887-170,
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Customer Part Reviews
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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(2 Reviews)
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★★★★★
★★★★★
Great part-worked perfect
The part arrived on time and in good shape. It was a perfect fit and fixed the problem with my nail gun.
Guest - April 27, 2021
Verified Purchase
★★★★★
★★★★★
Worked great
Fit as should, works great like a new gun again
Guest - September 15, 2025
Verified Purchase
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Nailer
- 2 1/2” 15 Ga Angled Finish Nailer With Blow Nozzle
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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.
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_WW_1.gif "Part Location Diagram of 887170 Metabo HPT Piston Bumper")
