Part Location Diagram of 504120501 Husqvarna Piston Ring
See part J-11 in the diagram
( Grid squares measure 1x1 inch )

Piston Ring 504120501

Manufactured by:
Husqvarna
ERP Number:
ERP9364154
Part Number:
504120501
Original Equipment Manufacturer ?
  Works with your model  BCZ3050T!
$17.92
On Order

Easy 

30 - 60 mins 

(2 rated repairs) ?
  Works with your model   BCZ3050T!

Product Description

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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.

Troubleshooting

This part works with the following brands:
  • RedMax
  • Husqvarna
This part works with the following products:
  • Brush Cutter
  • Edger
  • Leaf Blower / Vacuum
Part# 504120501 replaces these:
504120501, 5109178-01, 510917801, 512331001, 5217554-01, 521755401,

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.

Easy 

30 - 60 mins 

(2 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Seized piston

Richard from Islip, New York

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Screw drivers
Parts Used:
504120501
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 from MADISON, Alabama

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
504120501
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 i nstructions as all 2 cycle engines are basically the same.














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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP9364154
Manufacturer Part Number: 504120501
Brand Model Number Description
Husqvarna 130BT Leaf Blower / Vacuum - Backpack Blower
Husqvarna 233R Brush Cutter - Brushcutter
Husqvarna 233RJ Brush Cutter - Brushcutter
Husqvarna 430LS Trimmer - Husqvarna String Trimmer Model 430LS Parts
Husqvarna 530BT Leaf Blower / Vacuum - Lightweight Backpack Blower
Husqvarna 533RS Brush Cutter - Brushcutter
Husqvarna 965102208 Leaf Blower / Vacuum - Husqvarna Leaf Blower Model 965102208 Parts
RedMax BCZ3000S Edger - Trimmers/Edgers
RedMax BCZ3000SW Brush Cutter - Brushcutters/Clearing Saws
RedMax BCZ3001S Edger - Trimmers/Edgers
RedMax BCZ3001S-CA Edger - Trimmers/Edgers
RedMax BCZ3001SW Brush Cutter - Brushcutters/Clearing Saws
RedMax BCZ3001SW-CA Brush Cutter - Brushcutters/Clearing Saws
RedMax BCZ3050S Edger - Trimmers/Edgers
RedMax BCZ3050SW Brush Cutter - Brushcutter
RedMax BCZ3050T Edger - Trimmers/Edgers
RedMax BCZ3060TS Edger - Trimmers/Edgers
RedMax EBZ3000RH Leaf Blower / Vacuum - Blowers
RedMax EBZ3000RH-CA Leaf Blower / Vacuum - Backpack Blower Carb
RedMax EBZ3000RHCA Leaf Blower / Vacuum - Blowers/Ebz3000rh-Ca
RedMax EBZ3050RH Leaf Blower / Vacuum - Blowers
RedMax HEZ3001S Edger - Trimmers/Edgers
RedMax HEZ3001S-CA Edger - Edger Carb
RedMax HEZ3001SCA Edger - Trimmers/Edgers/Hez3001s-Ca
RedMax HEZ3050S Edger - Trimmers/Edgers
RedMax HEZ3060S Edger - Trimmers/Edgers
Husqvarna R316TS Lawn Mower - R316 Ts Awd