String Trimmer 537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack
Two T35 trimmer heads with blue bump knobs and prewound 0.095 inch orange line for Husqvarna trimmers.
T35 trimmer head replacement for Husqvarna, shown in a lifestyle graphic with a person using a string trimmer.
T35 trimmer head replacement showing dimensions, 0.095-inch line, and M10x1.25 LH thread specifications.
Infographic showing T35 trimmer head compatibility and replacement part number 537388101 for string trimmers.
Close-up infographic showing T35 trimmer head materials, including ABS housing, metal mounting, and 0.095 inch line.
T35 trimmer head replacement guide showing common symptoms like vibration and broken parts for Husqvarna trimmers.
Infographic showing maintenance tips for T35 trimmer head replacement part 537388101.
Person installing a T35 trimmer head on a Husqvarna weed eater with easy installation instructions.
T35 trimmer head replacement for Husqvarna, prewound with 0.095 inch line, shown in a promotional product graphic.
Two T35 trimmer heads with blue bump knobs and prewound 0.095 inch orange line for Husqvarna trimmers.
T35 trimmer head replacement for Husqvarna, shown in a lifestyle graphic with a person using a string trimmer.
T35 trimmer head replacement showing dimensions, 0.095-inch line, and M10x1.25 LH thread specifications.
Infographic showing T35 trimmer head compatibility and replacement part number 537388101 for string trimmers.
Close-up infographic showing T35 trimmer head materials, including ABS housing, metal mounting, and 0.095 inch line.
T35 trimmer head replacement guide showing common symptoms like vibration and broken parts for Husqvarna trimmers.
Infographic showing maintenance tips for T35 trimmer head replacement part 537388101.
Person installing a T35 trimmer head on a Husqvarna weed eater with easy installation instructions.
T35 trimmer head replacement for Husqvarna, prewound with 0.095 inch line, shown in a promotional product graphic.

537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack

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CONFIRM THIS PART FITS
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537388101 T35 Trimmer Head

Key Features

  • Precision Tap Advance Mechanism: Specifically engineered for commercial-grade durability, the T35 head allows for instant line advancement with a simple tap on the ground during operation.
  • Split-Spool Internal Design: Features an integrated divider that keeps the two lines separate, preventing "overlapping" and line welding that can cause the head to jam.
  • High-Impact Blue Bump Knob: The characteristic blue knob is manufactured from high-density, wear-resistant polymer to withstand thousands of impacts with asphalt and soil.
  • Easy-Reload Interface: Designed with an open-eyelet system that allows for rapid line threading and winding without the need to turn the head upside down or use specialized tools.
  • Prewound with .095" Line: Comes factory-loaded with premium 0.095-inch diameter titanium-style line, providing an aggressive cut for heavy weeds and thick grass right out of the box.

Replaces / Cross-Reference Part Numbers

  • 537388101
  • 531300183
  • 531300194

Compatibility & Fitment

This "T35" series head is the standard professional choice for Husqvarna's straight-shaft trimmers. Key compatible models include:

  • Husqvarna 100/200 Series: 123L, 123LD, 225L, 232L, 232R.
  • Husqvarna 300 Series: 322L, 323L, 324Lx, 325L, 325Lx, 326L, 326Lx, 327LS.
  • Husqvarna 500 Series: 522L, 525L, 525LS, 525LST, 535LS.
  • Technical Specification: Fits all models with an M10 x 1.25 LHF (Left Hand Female) arbor thread.

When to Replace

  • Worn-Through Bump Cap: The blue center knob has ground down to the point where the internal spring is visible or it no longer triggers the line release.
  • Cracked Outer Shell: Visible stress fractures in the black housing, which can lead to the head shattering at high RPMs.
  • Eyelet Failure: The metal line exits (eyelets) have fallen out or are deeply grooved, causing the trimmer line to snap off inside the head repeatedly.
  • Internal Spool Jamming: The plastic "teeth" inside the head that lock the spool have rounded off, causing the head to dump all the line at once during use.
  • Excessive Vibration: The head has become unbalanced due to uneven wear, putting unnecessary stress on the trimmer's gear head and drive shaft.

Installation Tips

  • Left-Hand Threads: Remember, this head is Left-Hand Threaded. To tighten it onto the trimmer, you must turn it Counter-Clockwise.
  • Lock the Gear Head: Use a small hex key or the factory locking pin to hold the gear head shaft stationary while you spin the old head off and the new one on.
  • Spool Direction: When reloading line, follow the "LH" arrows molded into the spool. Loading the line in the "RH" direction will prevent the bump-feed mechanism from working.
  • Soak Your Line: To extend the life of your trimmer line, soak the spool in water for 24 hours. This keeps the nylon hydrated, making it more flexible and resistant to snapping at the eyelet.
  • Clean the Spring: Every time you reload the line, shake out any dirt or grass trapped around the internal spring to ensure the "bump" action stays smooth and responsive.
537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 1
537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 2
537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 3
  • 537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 1

    FIX TRIMMER'S SYMPTOMS

    Stuck/Tangled/ Broken trimmer head, The trimmer does not spin, The threads are stripping, Uneven Trimming, Excessive Vibration
  • 537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 2

    SAVING SOLUTION

    Enjoy the great feeling when your trimmer is repaired and works like before - BlueStars brings DIY solutions to help you deal with any trouble
  • 537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 3

    MAINTENANCE TIPS

    Regular Cleaning. Inspect the Trimmer Line & Keep surplus trimmer line around. Check the Air Filter & Fuel/Oil. Store Trimmer Appropriately
  • 537388101 T35 Trimmer Head - Fits Husqvarna 123L 225L 232L 322L - Replaces 531300183 - 2 Pack 4

    IMPORTANT NOTE

    This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility
EASY INSTALLATION

EASY INSTALLATION

1. Block the shaft with a stop pin; 2. Turn the old trimmer head counterclockwise to unlock & detach it; 3. Reinstall with our new trimmer head; 4. Test running for 5 mins to ensure proper operation.
#1 SOURCE OF HIGH-QUALITY REPLACEMENT PARTS

#1 SOURCE OF HIGH-QUALITY REPLACEMENT PARTS

Enjoy the comfort that our small yet mighty parts simplify your gardening experience - BlueStars brings DIY solutions to help deal with any trouble!

Compatible Models

Locate the model number of your appliance or equipment on the manufacturer's label and use it to check compatibility before ordering

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FAQs

This trimmer head is listed for Husqvarna straight-shaft trimmers including 123L, 225L, 232L, 322L, 323L, 324LX, 325L, 326L, 522L, 525L, and 525LS. Web references for this part family also commonly list additional Husqvarna models such as 122LDX, 123LD, 125L, 128L, 128LD, 128LDX, 129L, 129LDX, 223L, 224L, 225LD, 225R, 232R, 323R, 323LD, 324RX, 325LX, 326LX, 326LDX, and related 500-series straight-shaft units. Always confirm your trimmer uses an M10 x 1.25 left-hand thread before ordering.
This head replaces Husqvarna part number 537388101. Cross-references found for this T35 part family also include 531300183 and 531300194. Matching the thread specification is just as important as matching the part number: this version uses M10 x 1.25LH.
T35 universal heads in this part family are often used on straight-shaft trimmers from Husqvarna, Echo, Stihl, and RedMax, but fitment depends on the shaft type and arbor thread. For this listing, the confirmed fitment is the Husqvarna models shown in the title. If you want to use it on another brand, verify that your machine is a straight-shaft trimmer and uses M10 x 1.25 left-hand threads or the correct adapter arrangement.
Common signs include cracked or wobbling housing, line that stops advancing when tapped, a jammed spool, excessive vibration, or a bump knob worn down from ground contact. If the head no longer feeds 0.095-inch line reliably or the internal ratcheting/tap mechanism is sticking, replacement is usually faster than rebuilding.
Yes. It comes prewound with 0.095-inch trimmer line, so it can be installed and used right away. The T35 design is commonly set up for 0.095-inch line, which is a typical size for trimming heavier grass and light weeds on straight-shaft units.
Installation is usually straightforward and takes about 5 to 15 minutes. Most trimmers require you to lock the gearbox or shaft with a locking pin or small screwdriver, then remove the old head by turning it the correct direction for a left-hand thread. Because this uses M10 x 1.25LH, tightening and loosening directions are opposite of standard right-hand threads, so check your trimmer manual if you're unsure.
Inspect the gearbox output shaft threads, thrust washer, rider plate, and any adapter hardware from the old head. Clean off wrapped grass and debris from the shaft area, and make sure the old head did not damage the threads. If your previous head failed from impact or vibration, also check for a bent shaft, worn gearbox bearings, or missing spacers before installing the replacement.