Easy
15-30 minutes
This knee joint is a genuine replacement part sourced directly from Husqvarna. It is compatible for use with many models of chainsaws. This knee joint It is made of metal and plastic. It should be replaced if it is broken. A screwdriver is needed for the replacement of this part. It does not include the pin (part 503892901).
Knee Joint 503890802
OEM part for: Husqvarna, Jonsered
Part Number: 503890802
$41.09
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 205 machines
Husqvarna
435 (2008-05) Chainsaw View Diagrams & Manuals
435 E (2008-05) Chainsaw View Diagrams & Manuals
440 E (2008-05) Chainsaw View Diagrams & Manuals
445 (2007-03) Chainsaw View Diagrams & Manuals
445 (2007-09) Chainsaw View Diagrams & Manuals
445 E (2007-03) Chainsaw View Diagrams & Manuals
445 E (2007-09) Chainsaw View Diagrams & Manuals
450 E (2007-03) Chainsaw View Diagrams & Manuals
450 E (2007-09) Chainsaw View Diagrams & Manuals
455 E (2007-01) Chainsaw View Diagrams & Manuals
455 E (2006-06) Chainsaw View Diagrams & Manuals
455 (2004-10) Chainsaw View Diagrams & Manuals
455 (2005-01) Chainsaw View Diagrams & Manuals
455 (2005-03) Chainsaw View Diagrams & Manuals
455 Rancher (2006-02) Chainsaw View Diagrams & Manuals
455 (2006-06) Chainsaw View Diagrams & Manuals
455 (2007-01) Chainsaw View Diagrams & Manuals
460 (2005-03) Chainsaw View Diagrams & Manuals
460 (2006-02) Chainsaw View Diagrams & Manuals
460 (2006-06) Chainsaw View Diagrams & Manuals
460 (2007-01) Chainsaw View Diagrams & Manuals
357 XP (2007-03) Chainsaw View Diagrams & Manuals
357 XP (EPA) (2006-02) Chainsaw View Diagrams & Manuals
357 XP (EPA) (2003-04) Chainsaw View Diagrams & Manuals
357 XP (EPA) (2004-05) Chainsaw View Diagrams & Manuals
357 XP (EPA) (2005-02) Chainsaw View Diagrams & Manuals
357 XP (EPA) (2007-03) Chainsaw View Diagrams & Manuals
359 (2001-01) Chainsaw View Diagrams & Manuals
359 (2003-04) Chainsaw View Diagrams & Manuals
359 (2004-05) Chainsaw View Diagrams & Manuals
359 (2005-02) Chainsaw View Diagrams & Manuals
359 (2006-02) Chainsaw View Diagrams & Manuals
359 (2007-03) Chainsaw View Diagrams & Manuals
359 EPA (2006-02) Chainsaw View Diagrams & Manuals
359 EPA (2001-10) Chainsaw View Diagrams & Manuals
359 EPA (2003-04) Chainsaw View Diagrams & Manuals
359 EPA (2004-05) Chainsaw View Diagrams & Manuals
359 EPA (2005-02) Chainsaw View Diagrams & Manuals
359 EPA (2007-03) Chainsaw View Diagrams & Manuals
340 (2001-09) Chainsaw View Diagrams & Manuals
340 (2004-03) Chainsaw View Diagrams & Manuals
340 (2005-05) Chainsaw View Diagrams & Manuals
340 (2006-06) Chainsaw View Diagrams & Manuals
340 (2007-01) Chainsaw View Diagrams & Manuals
340 E (2005-05) Chainsaw View Diagrams & Manuals
340 E (2006-06) Chainsaw View Diagrams & Manuals
340 EPA (1999-09) Chainsaw View Diagrams & Manuals
340 EPA (2003-01) Chainsaw View Diagrams & Manuals
340 EPA (2004-03) Chainsaw View Diagrams & Manuals
345 (2001-09) Chainsaw View Diagrams & Manuals
345 (2004-03) Chainsaw View Diagrams & Manuals
345 (2007-01) Chainsaw View Diagrams & Manuals
345 E (2005-05) Chainsaw View Diagrams & Manuals
345 E (2006-06) Chainsaw View Diagrams & Manuals
345 EPA (2003-01) Chainsaw View Diagrams & Manuals
345 EPA (2004-03) Chainsaw View Diagrams & Manuals
346 XP (1999-01) Chainsaw View Diagrams & Manuals
346 XP (2001-06) Chainsaw View Diagrams & Manuals
346 XP (2003-06) Chainsaw View Diagrams & Manuals
346 XP (2004-03) Chainsaw View Diagrams & Manuals
346 XP (2007-02) Chainsaw View Diagrams & Manuals
346 XP (2007-08) Chainsaw View Diagrams & Manuals
346 XP EPA (2004-03) Chainsaw View Diagrams & Manuals
350 (1998-02) Chainsaw View Diagrams & Manuals
350 (2001-09) Chainsaw View Diagrams & Manuals
350 (2004-03) Chainsaw View Diagrams & Manuals
350 (2005-05) Chainsaw View Diagrams & Manuals
350 (2006-06) Chainsaw View Diagrams & Manuals
350 (2007-01) Chainsaw View Diagrams & Manuals
350 EPA (2006-06) Chainsaw View Diagrams & Manuals
350 EPA (1999-09) Chainsaw View Diagrams & Manuals
350 EPA (2003-01) Chainsaw View Diagrams & Manuals
350 EPA (2004-03) Chainsaw View Diagrams & Manuals
351 (2001-06) Chainsaw View Diagrams & Manuals
351 EPA (1999-09) Chainsaw View Diagrams & Manuals
353 (2004-03) Chainsaw View Diagrams & Manuals
353 (2007-02) Chainsaw View Diagrams & Manuals
353 (2007-08) Chainsaw View Diagrams & Manuals
353 EPA (2004-03) Chainsaw View Diagrams & Manuals
353 EPA I (2002-09) Chainsaw View Diagrams & Manuals
357 (2001-01) Chainsaw View Diagrams & Manuals
357 EPA (2001-10) Chainsaw View Diagrams & Manuals
357 XP (2003-04) Chainsaw View Diagrams & Manuals
357 XP (2004-05) Chainsaw View Diagrams & Manuals
357 XP (2005-02) Chainsaw View Diagrams & Manuals
357 XP (2006-02) Chainsaw View Diagrams & Manuals
345EPA (1999-09) Chainsaw View Diagrams & Manuals
450 (2011-07) Chainsaw View Diagrams & Manuals
450 (2010-09) Chainsaw View Diagrams & Manuals
460 (2011-01) Rancher Chainsaw View Diagrams & Manuals
445 E II Chain Saw View Diagrams & Manuals
445 E TRIOBRAKE (2011-05) Chain Saw View Diagrams & Manuals
445 E TRIOBRAKE (2008-07) Chain Saw View Diagrams & Manuals
445 II Chain Saw View Diagrams & Manuals
135 (2011-08) From Chain Saw View Diagrams & Manuals
135 E (2011-08) From Chain Saw View Diagrams & Manuals
450 E II Chain Saw View Diagrams & Manuals
135 E TRIOBRAKE Chain Saw View Diagrams & Manuals
345 E TRIOBRAKE (2008-09) Chain Saw View Diagrams & Manuals
345 E TRIOBRAKE (2007-03) Chain Saw View Diagrams & Manuals
455 E RANCHER II Chain Saw View Diagrams & Manuals
455 E RANCHER II TRIOBRAKE Chain Saw View Diagrams & Manuals
346 XP TRIOBRAKE (2008-09) Chain Saw View Diagrams & Manuals
346 XP TRIOBRAKE (2007-03) Chain Saw View Diagrams & Manuals
455 E TRIOBRAKE (2010-05) Chain Saw View Diagrams & Manuals
455 E TRIOBRAKE Chain Saw View Diagrams & Manuals
455 RANCHER II Chain Saw View Diagrams & Manuals
140 (2012-01) From Chain Saw View Diagrams & Manuals
140 E (2012-01) From Chain Saw View Diagrams & Manuals
461 Chain Saw View Diagrams & Manuals
140 E TRIOBRAKE (2012-02) Chain Saw View Diagrams & Manuals
353 TRIOBRAKE (2008-09) Chain Saw View Diagrams & Manuals
353 TRIOBRAKE (2007-03) Chain Saw View Diagrams & Manuals
465 RANCHER II Chain Saw View Diagrams & Manuals
435 E II Chain Saw View Diagrams & Manuals
435 II Chain Saw View Diagrams & Manuals
440 E II Chain Saw View Diagrams & Manuals
440 E TRIOBRAKE (2009-10) Chain Saw View Diagrams & Manuals
440 II Chain Saw View Diagrams & Manuals
357 XP EPA I (20031400001-20042099999) Chainsaw View Diagrams & Manuals
357 XP EPA (20070900001-20100799999) Chainsaw View Diagrams & Manuals
357 XP EPA (20060600001-20070900000) Chainsaw View Diagrams & Manuals
357 XP EPA (20050600001-20060600000) Chainsaw View Diagrams & Manuals
357 XP EPA (20041800001-20050600000) Chainsaw View Diagrams & Manuals
357 XP EPA (20014000001-20041800000) Chainsaw View Diagrams & Manuals
357 XP EPA (20010100001-20014000000) Chainsaw View Diagrams & Manuals
359 EPA I (20031400001-20042099999) Chainsaw View Diagrams & Manuals
450 II Chainsaw View Diagrams & Manuals
460 Rancher Chainsaw View Diagrams & Manuals
Jonsered
2141 (2001-09) Chain Saw View Diagrams & Manuals
2145 (2001-09) Chain Saw View Diagrams & Manuals
2149 (2001-09) Chain Saw View Diagrams & Manuals
2150 (2001-09) Chain Saw View Diagrams & Manuals
CS2141 (2003-01) Chain Saw View Diagrams & Manuals
CS2141 (2004-03) Chain Saw View Diagrams & Manuals
CS2141 (2007-01) Chain Saw View Diagrams & Manuals
CS2141 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2145 (2003-01) Chain Saw View Diagrams & Manuals
CS2145 (2004-03) Chain Saw View Diagrams & Manuals
CS2145 (2007-01) Chain Saw View Diagrams & Manuals
CS2145 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2147 (2003-08) Chain Saw View Diagrams & Manuals
CS2147 (2004-03) Chain Saw View Diagrams & Manuals
CS2147 (2007-04) Chain Saw View Diagrams & Manuals
CS2147 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2150 (2003-01) Chain Saw View Diagrams & Manuals
CS2150 (2004-03) Chain Saw View Diagrams & Manuals
CS2150 (2007-01) Chain Saw View Diagrams & Manuals
CS2150 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2152 (2002-09) Chain Saw View Diagrams & Manuals
CS2152 (2003-08) Chain Saw View Diagrams & Manuals
CS2152 (2004-03) Chain Saw View Diagrams & Manuals
CS2152 (2007-04) Chain Saw View Diagrams & Manuals
CS2152 (2007-08) Chain Saw View Diagrams & Manuals
CS2152 (2009-02) Chain Saw View Diagrams & Manuals
CS2152 (2011-05) Chain Saw View Diagrams & Manuals
CS2152 EPA (2004-03) Chain Saw View Diagrams & Manuals
CS2152 EPA I (2002-09) Chain Saw View Diagrams & Manuals
CS2152 EPA I (2003-08) Chain Saw View Diagrams & Manuals
CS2153 (2007-08) Chain Saw View Diagrams & Manuals
CS2153 (2009-02) Chain Saw View Diagrams & Manuals
CS2153 (2011-05) Chain Saw View Diagrams & Manuals
CS2156 (2003-11) Chain Saw View Diagrams & Manuals
CS2156 (2004-05) Chain Saw View Diagrams & Manuals
CS2156 (2005-02) Chain Saw View Diagrams & Manuals
CS2156 (2006-02) Chain Saw View Diagrams & Manuals
CS2156 (2007-03) Chain Saw View Diagrams & Manuals
CS2156 (2010-02) Chain Saw View Diagrams & Manuals
CS2156 (2011-05) Chain Saw View Diagrams & Manuals
CS2156 EPA (2004-05) Chain Saw View Diagrams & Manuals
CS2156 EPA (2005-02) Chain Saw View Diagrams & Manuals
CS2156 EPA (2006-02) Chain Saw View Diagrams & Manuals
CS2156 EPA I (2003-11) Chain Saw View Diagrams & Manuals
CS2159 (2003-11) Chain Saw View Diagrams & Manuals
CS2159 (2004-05) Chain Saw View Diagrams & Manuals
CS2159 (2005-02) Chain Saw View Diagrams & Manuals
CS2159 (2006-02) Chain Saw View Diagrams & Manuals
CS2159 (2007-03) Chain Saw View Diagrams & Manuals
CS2159 (2010-02) Chain Saw View Diagrams & Manuals
CS2159 (2011-05) Chain Saw View Diagrams & Manuals
CS2159 EPA (2004-05) Chain Saw View Diagrams & Manuals
CS2159 EPA (2005-02) Chain Saw View Diagrams & Manuals
CS2159 EPA (2006-02) Chain Saw View Diagrams & Manuals
CS2159 EPA I (2003-11) Chain Saw View Diagrams & Manuals
CS2240 (2009-02) Chain Saw View Diagrams & Manuals
CS2240 (2010-06) Chain Saw View Diagrams & Manuals
CS2240 (2011-05) Chain Saw View Diagrams & Manuals
CS2240 S (2009-02) Chain Saw View Diagrams & Manuals
CS2240 S (2010-06) Chain Saw View Diagrams & Manuals
CS2240 S (2011-05) Chain Saw View Diagrams & Manuals
CS2245 (2008-09) Chain Saw View Diagrams & Manuals
CS2245 (2009-02) Chain Saw View Diagrams & Manuals
CS2245 (2010-07) Chain Saw View Diagrams & Manuals
CS2245 (2011-07) Chain Saw View Diagrams & Manuals
CS2245 S (2008-09) Chain Saw View Diagrams & Manuals
CS2245 S (2009-02) Chain Saw View Diagrams & Manuals
CS2245 S (2010-07) Chain Saw View Diagrams & Manuals
CS2245 S (2011-07) Chain Saw View Diagrams & Manuals
CS2250 S (2008-09) Chain Saw View Diagrams & Manuals
CS2250 S (2009-02) Chain Saw View Diagrams & Manuals
CS2250 S (2010-07) Chain Saw View Diagrams & Manuals
CS2250 S (2011-07) Chain Saw View Diagrams & Manuals
CS2255 (2008-03) Chain Saw View Diagrams & Manuals
CS2255 (2009-03) Chain Saw View Diagrams & Manuals
CS2255 (2011-01) Chain Saw View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Chain Saw Parts
- Saw Parts
This part replaces obsolete part #: 503890801
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Part repair put another machine back in circulation!! Great service and fast delivery!! Thank you
MJ -
March 3, 2022
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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.
Failed to set brake properly before removing chainsaw cover
Richard - May 9, 2016
👍 10 of 10 people found this instruction helpful
Tool Type
Chain Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Homemade sprocket
Parts Used
Read carefully the owner's manual procedure for removing cover BEFORE removing cover from chainsaw! Or, watch you tube video for proper procedure--it would have saved me from needing this replacement part. Not having done either, after prying the cover off to get at the actual chain saw, it became quite obvious that the cover was not going to back in place without some tool to reset the safety brake which had not been properly set before disassembly. Brute force was not the answer. Broke the plastic spring guide ( aka knee joint) in several attempts to force said spring back in place. Frustration led to you tube videos in what not to do and what one should do. Improvised sprocket to reset the brake and used the replacement knee joint to effect the repair. Took 20 minutes to make the tool, and five minutes to put the assembly back together.
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Chain brake broke
Dave - May 24, 2019
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Removed the old parts and installed the new parts. Very easy job to complete.
The hardest part was putting the spring in place. To compress the spring , I used a medium sized flat screw driver and placed it in the end of the spring so it screw driver went part way in the spring and the wider part was able to push on the spring and with my other hand, hold down the rest of the spring and components and pop the spring in place.
The hardest part was putting the spring in place. To compress the spring , I used a medium sized flat screw driver and placed it in the end of the spring so it screw driver went part way in the spring and the wider part was able to push on the spring and with my other hand, hold down the rest of the spring and components and pop the spring in place.
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Brake on husqvarna broke
Fred - April 4, 2018
Tool Type
Chain Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Clamp
Parts Used
Removed old brake replaced knee joint and put spring back in knee joint and buttoned everything up then put brake back into install position .
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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.
