It is a genuine manufacturer-sourced component which is specially designed for use with Poulan and Husqvarna chainsaws. All saws are fitted with a decompression valve at the factory. When the valve is pressed in it reduces the pressure in the chamber to make the saw easier to start. The valve closes automatically as soon as the engine starts. This is an identical replacement for a missing or a faulty decompression valve that was installed on a new unit. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this part. Keep in mind this high-quality part is made of durable metal and is sold individually.
Decompression Valve 503715301
OEM part for: Husqvarna, Poulan, Jonsered
Part Number: 503715301
$37.35
In Stock
Ships within 1 business day 
Compatibility
This part will fit the following 281 machines
Husqvarna
394 (1994-01) Chainsaw View Diagrams & Manuals
394 (1996-01) Chainsaw View Diagrams & Manuals
394 EPA (1998-03) Chainsaw View Diagrams & Manuals
395 (2001-01) Chainsaw View Diagrams & Manuals
395 (2003-10) Chainsaw View Diagrams & Manuals
395 (2005-05) Chainsaw View Diagrams & Manuals
395 EPA (2007-01) Chainsaw View Diagrams & Manuals
395 EPA (2001-01) Chainsaw View Diagrams & Manuals
395 EPA (2003-10) Chainsaw View Diagrams & Manuals
395 EPA (2005-05) 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 (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
362 (1999-05) Chainsaw View Diagrams & Manuals
362 (1999-11) Chainsaw View Diagrams & Manuals
362 (2003-10) Chainsaw View Diagrams & Manuals
362 (2005-05) Chainsaw View Diagrams & Manuals
362 (2007-01) Chainsaw View Diagrams & Manuals
362 EPA (2007-01) Chainsaw View Diagrams & Manuals
362 EPA (1999-11) Chainsaw View Diagrams & Manuals
362 EPA (2001-10) Chainsaw View Diagrams & Manuals
362 EPA (2003-10) Chainsaw View Diagrams & Manuals
362 EPA (2005-05) Chainsaw View Diagrams & Manuals
362 XP (2005-05) Chainsaw View Diagrams & Manuals
365 (1996-09) Chainsaw View Diagrams & Manuals
365 (1997-12) Chainsaw View Diagrams & Manuals
365 EPA (1997-12) Chainsaw View Diagrams & Manuals
365 EPA (1999-04) Chainsaw View Diagrams & Manuals
365 (1999-11) Chainsaw View Diagrams & Manuals
365 (2003-11) Chainsaw View Diagrams & Manuals
365 (2005-05) Chainsaw View Diagrams & Manuals
365 EPA (1999-11) Chainsaw View Diagrams & Manuals
365 EPA (2002-01) Chainsaw View Diagrams & Manuals
365 EPA (2003-11) Chainsaw View Diagrams & Manuals
365 EPA (2005-05) Chainsaw View Diagrams & Manuals
365 EPA (2007-03) Chainsaw View Diagrams & Manuals
371 (1996-03) Chainsaw View Diagrams & Manuals
371 (1996-09) Chainsaw View Diagrams & Manuals
371 (1997-12) Chainsaw View Diagrams & Manuals
371 (1999-05) Chainsaw View Diagrams & Manuals
371 EPA (1997-12) Chainsaw View Diagrams & Manuals
371 EPA (1999-05) Chainsaw View Diagrams & Manuals
371 K (2003-08) Chainsaw View Diagrams & Manuals
371 K EPA (2003-08) Chainsaw View Diagrams & Manuals
372 (1999-11) Chainsaw View Diagrams & Manuals
372 (2003-10) Chainsaw View Diagrams & Manuals
372 (2005-05) Chainsaw View Diagrams & Manuals
372 (2007-01) Chainsaw View Diagrams & Manuals
372 EPA (2007-01) Chainsaw View Diagrams & Manuals
372 EPA (1999-11) Chainsaw View Diagrams & Manuals
372 EPA (2001-10) Chainsaw View Diagrams & Manuals
372 EPA (2003-10) Chainsaw View Diagrams & Manuals
372 EPA (2005-05) Chainsaw View Diagrams & Manuals
372 XPW EPA (2007-01) Chainsaw View Diagrams & Manuals
375 K (2003-08) Chainsaw View Diagrams & Manuals
375 K EPA (2003-08) Chainsaw View Diagrams & Manuals
385XP EPA (2001-04) Chainsaw View Diagrams & Manuals
385XP (2003-10) Chainsaw View Diagrams & Manuals
385XP EPA (2005-03) Chainsaw View Diagrams & Manuals
385 EPA (2006-10) Chainsaw View Diagrams & Manuals
385XP EPA (2003-10) Chainsaw View Diagrams & Manuals
390 EPA (2006-10) Chainsaw View Diagrams & Manuals
394 (1992-01) Chainsaw View Diagrams & Manuals
394 (1992-02) 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
254 (1994-06) Chainsaw View Diagrams & Manuals
254 (1996-01) Chainsaw View Diagrams & Manuals
254 (1998-03) Chainsaw View Diagrams & Manuals
254 (2001-09) Chainsaw View Diagrams & Manuals
257 (1994-06) Chainsaw View Diagrams & Manuals
257 (1996-01) Chainsaw View Diagrams & Manuals
257 (1998-03) Chainsaw View Diagrams & Manuals
257 (2001-09) Chainsaw View Diagrams & Manuals
261 EPA (1998-03) Chainsaw View Diagrams & Manuals
261 EPA (1999-06) Chainsaw View Diagrams & Manuals
262 (1994-06) Chainsaw View Diagrams & Manuals
262 (1996-01) Chainsaw View Diagrams & Manuals
272 XP (1997-01) Chainsaw View Diagrams & Manuals
281 (1991-04) Chainsaw View Diagrams & Manuals
281 (1993-09) Chainsaw View Diagrams & Manuals
281 (1997-12) Chainsaw View Diagrams & Manuals
281 (2000-02) Chainsaw View Diagrams & Manuals
281 (2001-10) Chainsaw View Diagrams & Manuals
288 (1991-04) Chainsaw View Diagrams & Manuals
288 (1993-09) Chainsaw View Diagrams & Manuals
288 (1997-12) Chainsaw View Diagrams & Manuals
288 (2000-02) Chainsaw View Diagrams & Manuals
288 (2001-10) Chainsaw View Diagrams & Manuals
288 EPA (1997-12) Chainsaw View Diagrams & Manuals
288 EPA (2000-02) Chainsaw View Diagrams & Manuals
288 EPA (2001-10) Chainsaw View Diagrams & Manuals
272 S (1995-12) Stump Grinder View Diagrams & Manuals
272 S (1997-01) Stump Grinder View Diagrams & Manuals
371 K (2000-02) Power Cutter View Diagrams & Manuals
371 K (2005-05) Power Cutter View Diagrams & Manuals
371 K EPA (1999-04) Power Cutter View Diagrams & Manuals
371 K EPA (2002-01) Power Cutter View Diagrams & Manuals
371 K EPA (2005-05) Power Cutter View Diagrams & Manuals
375 K (2005-05) Power Cutter View Diagrams & Manuals
375 K EPA (2005-05) Power Cutter View Diagrams & Manuals
K 750 (2007-01) Power Cutter View Diagrams & Manuals
K 750 (2007-07) Power Cutter View Diagrams & Manuals
394XP (1998-03) Chainsaw View Diagrams & Manuals
394XP (1996-01) Chainsaw View Diagrams & Manuals
394XP (1994-01) Chainsaw View Diagrams & Manuals
394XP (1992-10) Chainsaw View Diagrams & Manuals
K760 Power Cutter View Diagrams & Manuals
262XP Chainsaw View Diagrams & Manuals
K760 (2013-02) Power Cutter View Diagrams & Manuals
365 H (2018-04) From Chain Saw View Diagrams & Manuals
365 H (2017-11) From Chain Saw View Diagrams & Manuals
365 H (2017-10) From Chain Saw View Diagrams & Manuals
365 H (2017-06) From Chain Saw View Diagrams & Manuals
365 H (2016-10) From Chain Saw View Diagrams & Manuals
365 H (2013-12) From Chain Saw View Diagrams & Manuals
365 H (2011-05) Chain Saw View Diagrams & Manuals
365 H (2010-05) Chain Saw View Diagrams & Manuals
371 XP (1997-12) Epa Chain Saw View Diagrams & Manuals
371 XP (1999-05) Chain Saw View Diagrams & Manuals
371 XP (1996-09) Chain Saw View Diagrams & Manuals
371 XP (1996-03) Chain Saw View Diagrams & Manuals
371 XP (1995-12) Chain Saw View Diagrams & Manuals
390XP (2018-06) From Chain Saw View Diagrams & Manuals
390XP (2016-10) From Chain Saw View Diagrams & Manuals
390XP (2016-09) From Chain Saw View Diagrams & Manuals
390XP (2016-03) From Chain Saw View Diagrams & Manuals
390, 390 EPA (2011-05) Chain Saw View Diagrams & Manuals
390, 390 EPA (2010-05) Chain Saw View Diagrams & Manuals
390 (2006-10) Chain Saw View Diagrams & Manuals
395 XP (2003-10) Epa Chain Saw View Diagrams & Manuals
395 XP (2016-10) Epa Chain Saw View Diagrams & Manuals
395 XP (2010-06) Epa Chain Saw View Diagrams & Manuals
395 XP (2007-01) Chain Saw View Diagrams & Manuals
395 XP (2005-05) Chain Saw View Diagrams & Manuals
395XP (2003-01) Chain Saw View Diagrams & Manuals
395 XP (2001-01) Chain Saw View Diagrams & Manuals
261 (1998-03) Epa, Usa Only View Diagrams & Manuals
261 (1999-06) Epa Chain Saw View Diagrams & Manuals
288 XP (2018-06) Chain Saw View Diagrams & Manuals
288 XP (2016-07) Chain Saw View Diagrams & Manuals
288 XP (2010-06) Chain Saw View Diagrams & Manuals
K 770 (2017-11) Power Cutter View Diagrams & Manuals
272K (1999-09) Power Cutter View Diagrams & Manuals
272K (1997-01) Power Cutter View Diagrams & Manuals
357 XP EPA (20070900001-20100799999) Chainsaw View Diagrams & Manuals
357 XP EPA (20060600001-20070900000) 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
362 XP SPECIAL EPA (20070100001-Current) Chainsaw View Diagrams & Manuals
362 XP SPECIAL EPA (20051800001-20070100000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL EPA (20034000001-20051800000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL EPA (20014000001-20034000000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL EPA (19994500001-20014000000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL (20070100001-Current) Chainsaw View Diagrams & Manuals
362 XP SPECIAL (20051800001-20070100000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL (20034000001-20051800000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL (20014000001-20034000000) Chainsaw View Diagrams & Manuals
362 XP SPECIAL (19994500001-20014000000) Chainsaw View Diagrams & Manuals
365SP (20193900001-current) Chainsaw View Diagrams & Manuals
365SP (20181400001-20184799999) Chainsaw View Diagrams & Manuals
365SP (20180300001-20181399999) Chainsaw View Diagrams & Manuals
365SP (20173900001-20174299999) Chainsaw View Diagrams & Manuals
365SP (20172200001-20173899999) Chainsaw View Diagrams & Manuals
365SP (20163900001-20172199999) Chainsaw View Diagrams & Manuals
365 SPECIAL EPA (20101800001-Current) Chainsaw View Diagrams & Manuals
365 SPECIAL (20111900001-20135199999) Chainsaw View Diagrams & Manuals
365 SPECIAL (20070900001-20101800000) Chainsaw View Diagrams & Manuals
365 SPECIAL (20020100001-20034400000) Chainsaw View Diagrams & Manuals
371 XP EPA (19991800001-Current) Chainsaw View Diagrams & Manuals
372 XP EPA (20034000001-20051800000) Chainsaw View Diagrams & Manuals
372 XP EPA (20014000001-20034000000) Chainsaw View Diagrams & Manuals
372 XP EPA (19994500001-20014000000) Chainsaw View Diagrams & Manuals
395 XP EPA (20034000001-20051800000) Chainsaw View Diagrams & Manuals
395 XP EPA (20193500001-current) Chainsaw View Diagrams & Manuals
Poulan
PP425 Gas Chainsaw View Diagrams & Manuals
PP505 Gas Chainsaw View Diagrams & Manuals
Jonsered
2063 (1997-11) Chain Saw View Diagrams & Manuals
2063 (1999-03) Chain Saw View Diagrams & Manuals
2063 EPA (1999-03) Chain Saw View Diagrams & Manuals
2065 (1997-02) Chain Saw View Diagrams & Manuals
2065 (1997-11) Chain Saw View Diagrams & Manuals
2065 (1999-03) Chain Saw View Diagrams & Manuals
2065 EPA (1999-03) Chain Saw View Diagrams & Manuals
2071 (1997-02) Chain Saw View Diagrams & Manuals
2071 (1997-11) Chain Saw View Diagrams & Manuals
2071 (1999-03) Chain Saw View Diagrams & Manuals
2071 EPA (1999-03) Chain Saw View Diagrams & Manuals
2071 W (1997-02) Chain Saw View Diagrams & Manuals
2071 W (1997-11) Chain Saw View Diagrams & Manuals
2083 (1995-05) Chain Saw View Diagrams & Manuals
2083 (1996-08) Chain Saw View Diagrams & Manuals
2083 II EPA (1998-09) Chain Saw View Diagrams & Manuals
2083 II EPA (2001-10) Chain Saw View Diagrams & Manuals
2159 (2001-07) Chain Saw View Diagrams & Manuals
2159 EPA (2001-07) Chain Saw View Diagrams & Manuals
2163 (2000-04) Chain Saw View Diagrams & Manuals
2163 (2001-10) Chain Saw View Diagrams & Manuals
2163 EPA (2000-04) Chain Saw View Diagrams & Manuals
2163 EPA (2001-10) Chain Saw View Diagrams & Manuals
2165 (2000-04) Chain Saw View Diagrams & Manuals
2165 (2002-01) Chain Saw View Diagrams & Manuals
2165 EPA (2000-04) Chain Saw View Diagrams & Manuals
2165 EPA (2002-01) Chain Saw View Diagrams & Manuals
2171 (2000-04) Chain Saw View Diagrams & Manuals
2171 (2001-10) Chain Saw View Diagrams & Manuals
2171 EPA (2000-04) Chain Saw View Diagrams & Manuals
2171 EPA (2001-10) 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
CS2163 (2003-05) Chain Saw View Diagrams & Manuals
CS2163 (2005-05) Chain Saw View Diagrams & Manuals
CS2163 (2007-01) Chain Saw View Diagrams & Manuals
CS2163 EPA (2003-05) Chain Saw View Diagrams & Manuals
CS2163 EPA (2005-05) Chain Saw View Diagrams & Manuals
CS2163 EPA (2007-01) Chain Saw View Diagrams & Manuals
CS2165 (2003-06) Chain Saw View Diagrams & Manuals
CS2165 (2005-05) Chain Saw View Diagrams & Manuals
CS2165 (2007-03) Chain Saw View Diagrams & Manuals
CS2165 (2010-05) Chain Saw View Diagrams & Manuals
CS2165 (2011-05) Chain Saw View Diagrams & Manuals
CS2165 EPA (2003-06) Chain Saw View Diagrams & Manuals
CS2165 EPA (2005-05) Chain Saw View Diagrams & Manuals
CS2171 (2003-05) Chain Saw View Diagrams & Manuals
CS2171 (2005-05) Chain Saw View Diagrams & Manuals
CS2171 (2007-01) Chain Saw View Diagrams & Manuals
CS2171 (2010-05) Chain Saw View Diagrams & Manuals
CS2171 (2011-05) Chain Saw View Diagrams & Manuals
CS2171 EPA (2003-05) Chain Saw View Diagrams & Manuals
CS2171 EPA (2005-05) Chain Saw View Diagrams & Manuals
CS2171 EPA (2007-01) Chain Saw View Diagrams & Manuals
CS2186 (2002-08) Chain Saw View Diagrams & Manuals
CS2186 (2005-03) Chain Saw View Diagrams & Manuals
CS2186 (2007-01) Chain Saw View Diagrams & Manuals
CS2186 (2009-05) Chain Saw View Diagrams & Manuals
CS2186 EPA (2002-08) Chain Saw View Diagrams & Manuals
CS2186 EPA (2005-03) Chain Saw View Diagrams & Manuals
CS2186 EPA (2007-01) Chain Saw View Diagrams & Manuals
CS2186 EPA (2009-05) Chain Saw View Diagrams & Manuals
CS2188 (2009-05) Chain Saw View Diagrams & Manuals
CS2188 (2010-06) Chain Saw View Diagrams & Manuals
CS2188 (2011-05) Chain Saw View Diagrams & Manuals
CS2188 EPA (2009-05) Chain Saw View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Chain Saw Parts
- Saw Parts
- Grinder Parts
This part replaces obsolete part #: 503665501, 503472001
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Easy repair
The part was new...good price...quick shipping...easy to look up....will buy from again...
Guest -
March 12, 2022
Verified Purchase
Easier Starting Chainsaw
I ordered a Husqvarna decompression valve and put it in my Stihl 660 chainsaw. It works better than the original valve and makes the saw easier to start. I read about it on an arborist site and I am glad that I ordered it.
ronne -
December 7, 2020
Verified Purchase
Parts were perfect for the job
Parts from ereplacement are always perfect. Problem lies in long delays to receive them. Thank you for being there.
Guest -
June 15, 2019
Verified Purchase
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