Husqvarna Pump Piston OEM #540057901

This part replaces obsolete part #: and 503932101.

Description:
It is a high-quality OEM item which is made for Husqvarna and Jonsered chainsaws. The piston is secured inside the cylinder in order to create pressure and push the oil. Over time due to friction and heat, it may wear out or even get damaged eventually requiring a replacement to maintain a properly working oil pump. Note, never use waste oil. This results in damage to the oil pump, the bar, and the chain. It is also important to use oil of the right grade (suitable viscosity range) in accordance with the air temperature. Make sure to refer to the owner’s manual and the appropriate diagrams of your model for the correct installation of the new part. You will need to use appropriate tools in order to remove the chain, the bar, and the sprocket in order to perform this repair. This pump piston is made of durable materials and is sold as an individual component. Keep in mind, other parts of the oiler mechanism are all sold separately.

Products Compatibility
This item works with the following types of products:

• Chain Saw
• Pruner
• Saw

Compatibility
This part is compatible with the following machines:

Husqvarna
435 (2008-05) Chainsaw
435 (2008-05) Chainsaw
435 E (2008-05) Chainsaw
435 E (2008-05) Chainsaw
440 E (2008-05) Chainsaw
440 E (2008-05) Chainsaw
445 (2007-03) Chainsaw
445 (2007-03) Chainsaw
445 (2007-09) Chainsaw
445 (2007-09) Chainsaw
445 E (2007-03) Chainsaw
445 E (2007-03) Chainsaw
445 E (2007-09) Chainsaw
445 E (2007-09) Chainsaw
450 E (2007-03) Chainsaw
450 E (2007-03) Chainsaw
450 E (2007-09) Chainsaw
450 E (2007-09) Chainsaw
340 (2001-09) Chainsaw
340 (2001-09) Chainsaw
340 (2004-03) Chainsaw
340 (2004-03) Chainsaw
340 (2005-05) Chainsaw
340 (2005-05) Chainsaw
340 (2006-06) Chainsaw
340 (2006-06) Chainsaw
340 (2007-01) Chainsaw
340 (2007-01) Chainsaw
340 E (2005-05) Chainsaw
340 E (2005-05) Chainsaw
340 E (2006-06) Chainsaw
340 E (2006-06) Chainsaw
340 EPA (1999-09) Chainsaw
340 EPA (1999-09) Chainsaw
340 EPA (2003-01) Chainsaw
340 EPA (2003-01) Chainsaw
340 EPA (2004-03) Chainsaw
340 EPA (2004-03) Chainsaw
345 (2001-09) Chainsaw
345 (2001-09) Chainsaw
345 (2004-03) Chainsaw
345 (2004-03) Chainsaw
345 (2007-01) Chainsaw
345 (2007-01) Chainsaw
345 E (2005-05) Chainsaw
345 E (2005-05) Chainsaw
345 E (2006-06) Chainsaw
345 E (2006-06) Chainsaw
345 EPA (2003-01) Chainsaw
345 EPA (2003-01) Chainsaw
345 EPA (2004-03) Chainsaw
345 EPA (2004-03) Chainsaw
350 (2001-09) Chainsaw
350 (2001-09) Chainsaw
350 (2004-03) Chainsaw
350 (2004-03) Chainsaw
350 (2005-05) Chainsaw
350 (2005-05) Chainsaw
350 EPA (2003-01) Chainsaw
350 EPA (2003-01) Chainsaw
350 EPA (2004-03) Chainsaw
350 EPA (2004-03) Chainsaw
327PT5S (2011-06) Pruner
327PT5S (2012-01) Pruner
345EPA (1999-09) Chainsaw
345EPA (1999-09) Chainsaw
450 (2011-07) Chainsaw
450 (2011-07) Chainsaw
450 (2010-09) Chainsaw
450 (2010-09) Chainsaw
536 LIXP Chain Saw
436LI Chain Saw
T536LIXP Chain Saw
445 E II Chain Saw
445 II Chain Saw
135 (2011-08) From Chain Saw
135 E (2011-08) From Chain Saw
450 E II Chain Saw
140 (2012-01) From Chain Saw
140 E (2012-01) From Chain Saw
435 E II Chain Saw
435 II Chain Saw
440 E II Chain Saw
440 II Chain Saw
PA1100 (537183323, 537183325) Pole Saw Attachment
536LIPX Pole Pruner
536LIP4 Pole Pruner
536LIPT5 Pole Pruner
525 PT5S Pole Pruner
530IPT5 Pole Saw

Jonsered
CS2240 (2009-02) Chain Saw
CS2240 (2010-06) Chain Saw
CS2240 (2011-05) Chain Saw
CS2240 S (2009-02) Chain Saw
CS2240 S (2010-06) Chain Saw
CS2240 S (2011-05) Chain Saw
CS2245 (2009-02) Chain Saw
CS2245 (2010-07) Chain Saw
CS2245 (2011-07) Chain Saw
CS2245 S (2009-02) Chain Saw
CS2245 S (2010-07) Chain Saw
CS2245 S (2011-07) Chain Saw
CS2250 S (2009-02) Chain Saw
CS2250 S (2010-07) Chain Saw
CS2250 S (2011-07) Chain Saw