This is a genuine OEM replacement part used in Bostitch nailers. An O-ring is a flexible circle used to create a tight seal between rigid parts in order to retain pressure. Correct fit is essential for these parts to function properly. This O-ring size is 20.8 mm x 2.4 mm; multiple size rings are used in these machines so please see manual to ensure correct placement. Sold individually.
I removed gun head and saw the problem. Removed piston with a 90 degree pic through center of piston. I then prepped new piston by installing new o-ring, piston spring, and lube. I then pressed piston assembly into gun head, installed gun head with four screws. Test fired worked perfect.
Removed 4 cap screws, popped off cap removed 2 orings and seal valve, put in new valve and orings greased the o rings re assembled cap Tool works great N66 coil nailer
Remove top of nailer, there are 4 Allen screws. Once removed in top piece that was removed there is one more small Allen screw to remove on the outside. Once removed the piston head valve comes outGǪclean the are, install new piston head valve and o rings, reassemble.
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Nail driving piston going to the drive position as soon as the air was supplied
Replacement of the piston air valve that was cracked and all associated O rings to the piston valve, O rings looked OK but since I had the valve out I replaced the O rings
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The composite top in the cylinder broke & the driver wouldnÆt contract
1) remove piston cap,(allen wrenches)
2) remove broken composite head in removed cap
3) replace rings and composite head
4) reinstall head cap and gasket
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Model Cross Reference
This part works with the following models:
ERP Number: ERP12414875
Manufacturer Part Number: 174053
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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