Medium
15-30 minutes
This replacement piston ring is an authentic OEM sourced part, not an aftermarket alternative. It is specially designed for use with Porter Cable nailers. A worn or broken piston ring is a common cause of low compression and a loss of power on an engine. If the compression is reduced significantly, the engine will not run at all. This metal piston ring is sold individually.
To complete this repair you will need a set of wrenches, pliers and a screwdriver.
Piston Ring 908928
OEM part for: Porter Cable
Part Number: 908928
$21.22
In Stock
Ships within 1 business day 
Jump To:
Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 10 machines
Porter Cable
COIL350 Type 1 3.5" Coil Nailer View Diagrams & Manuals
COIL350 Type 2 3.5" Coil Nailer View Diagrams & Manuals
FC350A Type 1 Clipped Head Framing Nailer View Diagrams & Manuals
FC350A Type 2 Clipped Head Framing Nailer View Diagrams & Manuals
FM350A Clipped Head Framing Nailer View Diagrams & Manuals
FR350A Round Head Framing Nailer View Diagrams & Manuals
FR350MAG Type 1 Magnesium Round Head Framing Nailer View Diagrams & Manuals
FR350MAG Type 2 Magnesium Round Head Framing Nailer View Diagrams & Manuals
FM350A (Type 1) Framing Nailer Power Tool View Diagrams & Manuals
FR350A (Type 1) 3-1/2in Rh Framer Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Nailer Parts
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
3
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
Great experience
The parts I ordered to repair my nail gun arrived quickly. They fit perfectly and resolved my problems. The reviews talking about how this part had fixed the problem were very helpful.
Guest -
October 15, 2020
Verified Purchase
Easy Repair thanks
The parts fit like the should.
Guest -
November 6, 2019
Verified Purchase
great part - good service
fast shipping, part worked perfectly, buy with confidence
Guest -
September 16, 2019
Verified Purchase
t
t
t -
t days ago
Verified Purchase
eReplacementParts Team
t
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Piston Ring
No questions have been asked yet
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
The piston ring ripped apart, and the nailer stopped working under pressure.
Stephen - August 3, 2018
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Allen wrench
Parts Used
I carefully removed the head of the nailer and observed the debris from the piston ring. I cleaned the inside cylinder and removed the piston. I placed the new piston ring on the piston, and I replaced the head collar gasket. I tightened the head of the nailer back on. The nailer works great again.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Nailer was leaking air.
jay - September 5, 2017
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench set
Parts Used
Removed the 4 allen bolts from the nailer head.
Pulled off the broken plastic collar. Put on the new one.
Replaced the piston ring just because I already had it open.
That's it.
Pulled off the broken plastic collar. Put on the new one.
Replaced the piston ring just because I already had it open.
That's it.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Nail gun stopped working
Ron - March 11, 2017
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
Removed the top cap of the nail gun
Remove all of the parts listed
Cleaned out the entire gun
Installed the part and oiled the interior of the gun
Installed the top cap
Shoots nails like it's new
Remove all of the parts listed
Cleaned out the entire gun
Installed the part and oiled the interior of the gun
Installed the top cap
Shoots nails like it's new
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Replaced internals.
Dennis - March 26, 2016
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Remove 4 Allen bolts on the back. Replace o-rings. and other parts. Reinstall the same way it came apart. Oil all parts. Works like new.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
