Medium
30-60 minutes
It is a genuine OEM supplied replacement piston ring that is specially designed for use with Husqvarna handheld lawn and garden equipment. This part helps to create an air-tight seal between the piston and the cylinder walls. If this part wears down your tool will not be able to operate as intended. This item is made from durable steel and it is sold individually.
Piston Ring 504120501
OEM part for: Husqvarna
Part Number: 504120501
$12.57
Usually ships in 7 - 12 business days
Leaves our warehouse within 7 - 12 business days
Compatibility
This Piston Ring will fit the following 8 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Husqvarna
Show More Compatible ModelsThis item works with the following types of products:
- Blower Parts
- Trimmer Parts
This part replaces obsolete part #: 521755401, 5217554-01
Questions & Answers ?
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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.
Seized piston
Richard - November 21, 2015
👍 1 of 1 people found this instruction helpful
Tool Type
Blower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Power Drill, Nutdriver
Parts Used
Removed joining parts to gain access to motor. Removed spark plug and filled cylinder with WD-40, removed cylinder head, replaced rings, light buffing of cylinder wall and reassemble.
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Lost compression and power due to worn ring that was also stuck in ring groove due to carbon
Sam - April 13, 2018
Tool Type
Blower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, torqe driver
Parts Used
Removed engine from case, cleaned engine and case, took engine apart and removed piston from head.
Honed cylinder walls, cleaned piston, ring groove, installed new ring and reassembled engine.
Reinstalled engine in case,started engine, and adjusted the carb. Tested the equipment and returned it to the owner.
No special instructions as all 2 cycle engines are basically the same.
Honed cylinder walls, cleaned piston, ring groove, installed new ring and reassembled engine.
Reinstalled engine in case,started engine, and adjusted the carb. Tested the equipment and returned it to the owner.
No special instructions as all 2 cycle engines are basically the same.
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Thanks for voting and helping fellow customers!
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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.
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