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Porter Cable BN125A Brad Nailer Parts

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Questions & Answers

Page A

Fig #

Spec Info Label Obsolete - Not Available

$1.27

Part Number:893576

Discontinued

100

Warning Label

$4.49

Part Number:904673

Ships in 1 - 17 business days

$4.49

102

Bolt

$3.83

Part Number:894752

In Stock, 2 available

$3.83

103

Housing Cap

$29.33

Part Number:A01267

In Stock, 25+ available

$29.33

104

Seal

$5.32

Part Number:891469

In Stock, 21 available

$5.32

105

Spring

$3.99

Part Number:A02160

Discontinued

106

Head Valve Seal

$17.33

Part Number:894737

In Stock, 15 available

$17.33

107

O-Ring

$2.75

Part Number:894748

In Stock, 25+ available

$2.75

108

HD. Valve Piston

$5.65

Part Number:894731

In Stock, 7 available

$5.65

109

O-Ring

$3.99

Part Number:A00104

In Stock, 12 available

$3.99

110

Gasket Head

$6.46

Part Number:894697

In Stock, 25+ available

$6.46

111

Collar

$2.75

Part Number:894736

In Stock, 4 available

$2.75

112

Piston Ring

$7.87

Part Number:894734

In Stock, 25+ available

$7.87

113

O-Ring

$2.05

Part Number:894746

In Stock, 25+ available

$2.05

114

Driver Assembly S7

$57.00

Part Number:894689

In Stock, 3 available

$57.00

115

Cylinder

$21.64

Part Number:A00971

In Stock, 6 available

$21.64

116

O-Ring

$2.64

Part Number:894893

In Stock, 11 available

$2.64

117

Cylinder Spacer

$5.65

Part Number:894733

In Stock, 6 available

$5.65

118

O-Ring

$2.03

Part Number:883924

In Stock, 16 available

$2.03

119

Cyl Check Seal

$3.64

Part Number:894735

In Stock, 13 available

$3.64

120

Bumper

$13.55

Part Number:898483

In Stock, 8 available

$13.55

121

Driver Guide

$3.22

Part Number:894753

In Stock, 1 available

$3.22

201

Seal

$2.03

Part Number:883844

In Stock, 20 available

$2.03

202

Trigger Valve Head

$4.58

Part Number:894694

In Stock, 2 available

$4.58

203

Spring

$2.03

Part Number:888890

Ships in 1 - 17 business days

$2.03

204

Trigger Valve Stem

$4.49

Part Number:913374

In Stock, 6 available

$4.49

205

O-Ring

$2.03

Part Number:883848

In Stock, 25+ available

$2.03

206

O-Ring

$2.03

Part Number:883849

In Stock, 6 available

$2.03

207

Trigger Valve Guide

$17.04

Part Number:894894

In Stock, 1 available

$17.04

208

Spring

$2.03

Part Number:894758

In Stock, 3 available

$2.03

209

Trigger Valve Assembly

$22.99

Part Number:895212

In Stock, 4 available

$22.99

212

Trigger Pivot Pin (after serial number 80046)

$10.10

Part Number:890722

In Stock, 11 available

$10.10

213

Urethane Retainer

$2.35

Part Number:890725

In Stock, 25+ available

Note: After S/N 59314

$2.35

214

Rolled Pin

$1.99

Part Number:30R200009

In Stock, 7 available

$1.99

215

O-Ring

$2.03

Part Number:903621

In Stock, 6 available

$2.03

301

Housing

$87.88

Part Number:895712

Ships in 1 - 17 business days

$87.88

302

O-Ring

$3.30

Part Number:884529

In Stock, 6 available

$3.30

303

End Cap

$11.00

Part Number:883858

In Stock, 3 available

$11.00

304

Protective Cover

$2.03

Part Number:884443

In Stock, 25+ available

$2.03

401

Driver Guide Cover

$32.05

Part Number:895296

In Stock, 1 available

$32.05

402

Driver Guide Cover B

$20.77

Part Number:894741

Ships in 1 - 17 business days

$20.77

403

$6.90

Part Number:894755

In Stock, 13 available

$6.90

404

Driver Guide

$35.05

Part Number:895297

Ships in 1 - 17 business days

$35.05

405

Magazine A

$36.92

Part Number:895292

Ships in 1 - 17 business days

$36.92

406

Wear Plate Obsolete - Not Available

$1.96

Part Number:883908

Discontinued

408

Magazine B

$29.30

Part Number:895293

Ships in 1 - 17 business days

$29.30

409

Pusher

$6.61

Part Number:894756

Ships in 1 - 17 business days

$6.61

410

Spring Guide

$2.05

Part Number:894707

Ships in 1 - 17 business days

$2.05

411

Spring

$2.03

Part Number:894774

In Stock, 2 available

$2.03

412

Spring Pin

$2.03

Part Number:894780

Ships in 1 - 17 business days

$2.03

413

Latch

$11.51

Part Number:894716

Ships in 1 - 17 business days

$11.51

414

Magazine Spacer Obsolete - Not Available

$3.07

Part Number:894754

Discontinued

415

Spring Obsolete - Not Available

$1.29

Part Number:910721

Discontinued

416

Safety B

$17.58

Part Number:894773

In Stock, 1 available

$17.58

416

Safety B Assembly

$41.19

Part Number:911687

Ships in 1 - 17 business days

$41.19

417

Safety A

$18.99

Part Number:894702

In Stock, 1 available

$18.99

418

Thumb Wheel

$19.08

Part Number:894775

In Stock, 20 available

$19.08

419

Safety Obsolete - Not Available

$11.08

Part Number:894765

Discontinued

420

Ring

$2.03

Part Number:886218

Discontinued

421

Safety Spring

$2.98

Part Number:887969

In Stock, 2 available

$2.98

422

Safety Guide

$4.68

Part Number:913102

In Stock, 1 available

$4.68

423

Non-Marking Rubber Nose Cushion Obsolete - Not Available

$6.29

Part Number:894742

Discontinued

424

Magazine End Plate

$9.61

Part Number:894704

Ships in 1 - 17 business days

$9.61

425

Cushion End Plate Obsolete - Not Available

$5.72

Part Number:894740

Discontinued

426

Bolt

$2.03

Part Number:883866

In Stock, 7 available

$2.03

427

Nut Obsolete - Not Available

$1.12

Part Number:894781

Discontinued

428

Magazine Bracket Obsolete - Not Available

$15.00

Part Number:894706

Discontinued

429

Bolt

$2.03

Part Number:894751

Ships in 1 - 17 business days

$2.03

430

Magazine Latch

$5.61

Part Number:894739

Ships in 1 - 17 business days

$5.61

431

Latch Pin

$12.58

Part Number:894761

Ships in 1 - 17 business days

$12.58

432

Spring

$2.22

Part Number:892310

In Stock, 2 available

$2.22

433

E-Ring

$2.03

Part Number:886069

In Stock, 6 available

$2.03

434

Anchor Block Obsolete - Not Available

$15.37

Part Number:894777

Discontinued

435

Bolt

$2.64

Part Number:894745

Ships in 1 - 17 business days

$2.64

436

Lock Washer Obsolete - Not Available

$3.99

Part Number:886078

Discontinued

437

Bolt

$2.03

Part Number:883878

Discontinued

Miscellaneous Parts

Fig #

856

Hex Wrench (3mm)

$6.52

Part Number:884297

Ships in 1 - 17 business days

$6.52

856

Hex Wrench (4mm)

$6.52

Part Number:884298

Ships in 1 - 17 business days

Note: After S/N 010150

$6.52

856

Air Tool Oil

$3.64

Part Number:884293

In Stock, 25+ available

$3.64

856

Safety Glasses

$9.16

Part Number:634065-01

Ships in 1 - 17 business days

$9.16

1000

Overhaul Maintenance Kit

$63.89

Part Number:903775

In Stock, 9 available

$63.89

1001

Driver Maintenance Kit For BN125A

$95.86

Part Number:903776

Ships in 1 - 17 business days

$95.86

2000

Carrying Case Obsolete - Not Available

$31.50

Part Number:5140028-05

Discontinued

Search within model

Questions & Answers

Discuss | Repair Videos

Popular Parts

$2.35

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$5.32

Repair Guides

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This article lists the major categories of drilling, fastening, and hammering tools, and explains the basic applications, types, and features of each.

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This article suggests guidelines for power tool care and maintenance. It also describes information tools available at eReplacementParts.com.

How to Diagnose Power Air Nailers

This article discusses the common problems that air nailers encounter. It offers steps for troubleshooting each symptom and guidelines for repair.

Accessories

Accessories for the Porter Cable BN125A

Maintenance Kits

Overhaul Maintenance Kit

$63.89

Driver Maintenance Kit For BN125A

$95.86

Questions & Answers

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Showing questions 1-10 of 11
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Part #894698 Exhaust Deflector not shown as a part that can be purchase.On my list it is shown as #101 Part #894698,can it be purchase

Fred for model number BN125A asked on 2019-06-19

Hello Fred, Thank you for the question. The Exhaust Defector is only sold as part of the Housing Cap, Part Number: A01267 for this model. Hope this helps!

Related Parts: Housing Cap

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The porter cable brad nailer BN125A is able to fire only one nail at a time. The hammer pin gets stuck in the down position and has to be manually reset each time. Thank you Tim

Tim for model number BN125A asked on 2019-09-28

Hi Tim, it could be as simple as oiling your gun as this can could be causing your issue, you may also need to replace the hammer pin it's self. Thank you for your question and good luck with your repair!

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Is the piston ring supposed to have a break in it??, So it fits over piston

Steve for model number BN 125A asked on 2019-10-01

hello Steve, Thank you for the question. Yes, The Piston Ring is suppose to have the split. Hope this helps!

Related Parts: Piston Ring

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Was using the nailer when it gave one burst of air and stopped working. Unplugged nailer,plugged it back in got nothing but air coming out exhaust. Pull trigger and air slows down. Nailer was oiled before use. Tired some suggestions found here ,nothing works.

John for model number BN125A Brad nailer asked on 2019-10-12

Hi John, it sounds like a broken or faulty seal or o-ring causing air leak. If you have ruled it out you may have to take it to a technician. Thank you for your question and good luck with your repair!

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No pressure at gun. Should the piston ring#112 have a break in it?

John Rosolino for model number BN125A asked on 2019-10-14

Hi John, the piston ring part 894734 does have a break in it.Thank you for your question and good luck with your repair!

Related Parts: Piston Ring

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No pressure at gun. Have checked o-ring and piston ring. Both OK. Where can this be serviced if all else fails?

John for model number BN125A asked on 2019-10-14

Hi John, I would contact the manufacturer directly as we do not have information on local technicians. Thank you for your question and good luck with your repair!

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Can the o-ring be bad even though it looks ok?

John Rosolino for model number Bn125a asked on 2019-10-14

Hi John, it is possible to worn/loose even if it looks ok. Thank you for your question and good luck with your repair!

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I'm not sure which part I need. I think it is A00104. The original is an orange ring. Can I send a picture somehow?

Missy for model number BN125A asked on 2019-10-19

Hello Missy and thanks for writing. Please send a picture as an attachment to: customerservice@ereplacementparts.com We hope this helps. Please contact us anytime.

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How do you take out the HD valve piston from the top casing part 108

Buddy for model number Bn125a asked on 2020-01-17

Hello Buddy, Thank you for the question. We do not have exact instructions for this repair but all you have to do is remove the housing cap then remove the parts to access part 108. Very simple repair. Also, replace the gasket head with this repair as gasket are a one time use only. I hope this helps and good luck with your repair.

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I have had this porter cable and when I went to use it, the air diverter was broke so I ordered a new cap and the diverter came with it. How to remove the inside hardware from the cap ??

John for model number BN125A asked on 2020-02-21

Good Day John. Thank you for your question in regards to your unit (Model Number BN125A). The following URL is to a video that should assist you with the instructions on how to do this: https://www.youtube.com/watch?v=NfiZwRoofdI&feature=youtu.be. We hope this helps! Best Regards.

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Showing questions 1-10 of 11
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Discussion

Discussion for the Porter Cable BN125A Brad Nailer

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.

Question: Porter Cable Bn125a

1572013

I'm trying to put the driver back into the cylinder and I can't get the O-ring to go in, new O-ring, so frustrated !

Hello 1572013,

We have an article and video on How to Install a Driver Maintenance Kit on a Porter Cable Nail Gun. I hope this will end your frustration.

-WJA

Question: Jamesg

jagraybill

Bn 125 nailer- Gun only( thuds) doesn't shoot nail. Remove air supply and reattach air supply while holding trigger and touching wood gun will shoot. Works for a while and then must repeat the process

Hi jagraybill,
You will need to replace the head valve o-rings. Whats happening is when you pull the trigger the head valve should snap up but because the o-rings are worn in the head valve the valve gets slightly cocked in the head cap.When you hold the trigger and connect the hose the head valve gets jolted and drop back down on the cylinder.Replace the o-rings and you should be fine.Hope that helps.Good luck.
Tinker

Question: Noze Cushion(no-mar)

binar

Hello binar,

In answer to your question. The part number 894742 are sold individually and are not sold in a pack.

-WJA

Question: Porter Cable Finish Nailer Issue...

988487

I have a Porter Cable BN125A Finish Nailer that when the trigger is pulled will only make a clicking/short burts of air noise. I have checked the piston and the air supply which is fine. Any suggestions???? Almost acts like its not getting enough air but I know it is.

Thanks for any help :confused:

Hi Fire8033,
There's a couple of things to check on this tool . Take the nails out of the tool then place the nose of the tool on a board and press down and engage the safety while pulling the trigger.While your doing this connect and disconnect the air hose a couple of times and see if the tool starts working.What this does is check to see if the head valve is cock in the head and not being allowed to move in the head.If that won't help take a small screw driver and slide it between the trigger and trigger valve and see if the tool can be fired manually.This checks for bent or worn linkage on the trip arm. If it still won't work remove the head and with a wood dowel or other soft object see if you can move the piston up and down the cylinder.This checks for any nail or part of the nail shank being stuck in the channel of the magazine blocking the cycling of the driver. One of these things should be your problem.Hope that helps.Good luck.
Tinker

Thank you for the reply, I will try this today when I get home.