34mm Piston Kit Husqvarna 223L 323L 325 326 327 537405902

Piston kit, 34mm, for Husqvarna trimmer and brushcutter engines. Replaces Husqvarna part number 537405902. The older part number 537376504 supersedes to this same piston. Contents: piston, one piston ring, wrist pin and circlips. Fits 223L, 323L, 325, 326 and 327, including the LDX and RX variants, and the HA110 and HA150 attachments. This is a single ring piston. One compression ring, no second ring. If the piston you removed has two ring grooves you are looking at a different engine, and this kit will not suit it. Check that before ordering. Piston kit only. Cylinder, needle bearing, gaskets and crankshaft seals are not included. Look down the bore before you put it back together - if the plating is scored or lifting, the cylinder needs attention too.

• 34MM PISTON KIT - Piston, one piston ring, wrist pin and circlips. Replaces Husqvarna part number 537405902. The older number 537376504 supersedes to this same part, so either number gets you here.
• FITS HUSQVARNA TRIMMER AND BRUSHCUTTER ENGINES - 223L, 323L, 325, 326 and 327, including the LDX and RX variants, and the HA110 and HA150 attachments. Confirm against the part number in your parts diagram before ordering.
• SINGLE RING PISTON - This engine runs one compression ring, not two. If the piston you pulled out has two ring grooves, you have a different engine and this is the wrong part. That one check takes ten seconds and saves a return.
• PISTON KIT ONLY - Cylinder, needle bearing, gaskets and crank seals are not included. Inspect the cylinder bore before you reassemble. Scored or flaking plating will destroy a new piston, and no piston will fix a bad cylinder.
• WHY IT SCORED IN THE FIRST PLACE - On a trimmer this size a scored piston almost always follows an air leak or a lean carburetor setting rather than honest wear. Check the intake boot, the crank seals and the impulse line, and pressure test the crankcase before you run fuel through the new piston. Skip that and you will be doing this job twice.