OEM DeWALT Nailer Parts & Accessories

ASSEMBLY-PISTON/DRIV

$19.48

Fix Number: FIX12420390
Manufacturer Part Number: 180451

This is a manufacturer-approved piston assembly, which includes an assembled piston and driver. The function of the piston is to push the driver down the cylinder, which drives nails into the object being worked on. The most typical reason the piston assembly needs to be replaced is because the driver is damaged. The tip of the driver tends to deteriorate over time, causing the nails to jam. If your nailer is no longer driving nails properly, this should be one of the first things checked, especially if you hit something hard, such as concrete or metal.

SEAL RING

$6.51

Fix Number: FIX12489255
Manufacturer Part Number: P2320006600

This is a genuine replacement seal ring supplied directly from original equipment manufacturer. It is a commonly used item on Bostitch nailers. This plastic part fits over the piston to provide an air tight seal. Over time seals would deteriorate and crack allowing for air leaks. Please note this item is made out of rubber material and it is sold individually.

Piston Head Valve

$8.40

Fix Number: FIX12398369
Manufacturer Part Number: 174054

If air is leaking from your nail gun exhaust, you may be in need of a new piston head valve. The head valve is what regulates the air flow into the cylinder. This OEM head valve is sold individually. Over time, the seals on this plastic part can harden and break, and the valve body itself can also break. For this simple repair, start by removing the head from the nail gun, and then remove the worn valve from the head. There will be O-rings on the valve, which should be inspected and removed, this is a good opportunity to assess their condition, and replace them if needed. They are sold separately. You will then remove the steel washer located in the bottom of the head valve. The O-rings can now be reassembled back onto the new part, and you can begin to reinstall everything.

No Mar Contact Pad

$6.51

Fix Number: FIX12420362
Manufacturer Part Number: 179760

This is a single non-marking contact foot. This part attaches to the stapler safety plunger to cushion the plunger, so it does not harm your work piece. It is common for this part to get brittle and break off. To remove the damaged contact foot, use a screwdriver to pry it off. Align the new contact foot with the plunger so the notch is pointing towards the rear of the gun and push it into place. Very quick and easy repair.

Grommet

$6.51

Fix Number: FIX10171452
Manufacturer Part Number: 391814-00

This is a genuinely sourced grommet for a stapler or nailer. Its function is to secure the hinge pins, which allow multiple parts of your nail gun to pivot. Over time, the grommet can become hard and break. When it breaks, the hinge can come loose and can get lost easily. To install this part, simply push it onto the end of the pin with your fingers.

Magazing End Cap

$6.51

Fix Number: FIX12425939
Manufacturer Part Number: 180201

Keep your nailer or stapler feeding reliably with this magazine end cap, a durable component that secures the end of the magazine while helping to protect the internal pusher and spring assembly. It plays an important role in maintaining proper fastener alignment and helping prevent debris from entering the magazine, supporting smooth and consistent operation. A cracked or damaged end cap can lead to feeding issues and reduced performance, making replacement an effective repair. Installation typically involves removing the retaining pins, replacing the end cap, and reassembling the magazine. Refer to your tool's parts diagram or service manual to confirm the correct placement before installation.

KIT-TRIGGER VALVE

$45.05

Fix Number: FIX12531525
Manufacturer Part Number: TVA6

This is a genuine Bostitch replacement part that fits all BT brad nailers and all S32 staplers. If trigger leaks air or if tool misfires often, try replacing trigger valve. This kit contains one (1) each of: valve assembly (including both O-rings), lubricant, spring pin punch, and repair instructions. Please note that two (2) O-rings are included but can also be purchased separately as parts # 106967 and # 86459. O-rings are easily damaged and worn out, causing tool issues, so it\\\'s a good idea to have a backup or two on hand. Only a hammer is needed for this repair.

WASHER FLAT

$6.51

Fix Number: FIX12425945
Manufacturer Part Number: 180449

This is an authentic OEM product which is designed for Bostitch, DeWALT and Porter Cable nailers and staplers. It provides a tight seal for the valve piston. Over time the material may wear down causing air leaks. To replace this flat washer you will need a screwdriver and pliers. This item is sold individually and is made of durable material. Check the diagrams of your model for the proper installation.

Trigger Valve Assembly

$15.01

★★★★★

1 Review

Fix Number: FIX12689527
Manufacturer Part Number: N566148

Sourced directly from the manufacturer, this trigger valve assembly is for nailers. It controls the amount of compressed air that goes through the trigger to the nailer. This part includes a new valve and O-rings. Replacing this part will usually resolve issues involving loss of air or a stuck trigger valve.

Watch the install video

HEAD VALVE BODY

$6.51

★★★★★

10 Reviews

Fix Number: FIX12417689
Manufacturer Part Number: 180450-S

This head valve body regulates airflow within pneumatic nailers, helping generate the pressure needed to drive fasteners effectively. Built from durable materials, it supports consistent tool performance. Replacing a worn or faulty valve can resolve issues such as air leaks, reduced driving power, or failure to fire, restoring reliable operation.

Fixes these symptoms

Driver won't return
Leaks air from top
Won't fire
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Installation Instructions

Stephen from GRANITE CITY, IL

Head valve on brad nailer was damaged.

Removed top of nailer assembly. Removed head valve and o ring. Used existing o ring and placed on replacement head valve and reassembled the nailer Read more...

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