Husqvarna 531300183 T35 Trimmer Head – Genuine OEM Replacement Trimmer Head

Part Number: 531300183
Category: String Trimmer Heads, Spools & Cutting Line Components
Type: T35 Tap Advance Trimmer Head – Genuine OEM Replacement Trimmer Head

The Husqvarna 531300183 T35 Trimmer Head is a genuine Husqvarna OEM semi-automatic Tap Advance cutting head designed for compatible Husqvarna straight-shaft string trimmers and brushcutters. Husqvarna’s current 2026 dealer catalog identifies 531300183 as the T35 Tap Advance Trimmer Head in a clamshell package with a 10 mm left-hand (LH) arbor/thread.

Product Specifications

• Part Number: 531300183
• Manufacturer: Husqvarna
• Product Type: T35 Trimmer Head
• Series: T35
• OEM Description: T35 Trimmer Head M10 LH
• Alternate Description: T35 Tap Advance Head / T35 Non-Universal Trimmer Head
• Feed System: Semi-Automatic Tap Advance
• Application: String Trimmer / Brushcutter
• Shaft Application: Straight Shaft
• Arbor / Thread: 10 mm / Left-Hand (LH)
• Thread Configuration: M10 LH
• Universal: No
• Suitable Line Diameter: 2.4–2.7 mm
• Common Line Sizes: .095"–.105"
• Pre-Wound Line: Applicable T35 head supplied with trimmer line
• Spool Design: Split Spool
• Component Type: Cutting Head / Trimmer Head
• Compatible Brand: Husqvarna
• Replacement Type: Genuine OEM Replacement
• Condition: New
• Packaging: Clamshell
• Quantity: 1 Trimmer Head
• Part Number Reference: 531300183
• Alternate Number Format: 531 30 01-83
• UPC: 705788212781

Husqvarna’s current catalog specifies 531300183 as a 10 mm/LH T35 Tap Advance head, while Husqvarna product listings identify UPC 705788212781.

Features & Benefits

• Genuine Husqvarna OEM replacement trimmer head
• Professional T35 design
• Semi-automatic Tap Advance line-feed system
• Designed specifically for compatible Husqvarna straight-shaft trimmers
• 10 mm left-hand mounting configuration
• Allows additional cutting line to be released during operation
• Easy-to-remove spool and cap design
• Split spool helps reduce line tangling
• Split design helps reduce line welding
• Directional arrows assist with proper line winding
• Key slots help retain the cutting line during reassembly
• Designed for quick routine line replacement
• Suitable for professional landscaping and property maintenance
• Factory-style replacement for worn or damaged Husqvarna cutting heads
• Maintains the intended OEM cutting-head configuration
• Direct replacement for equipment requiring 531300183
• Genuine Husqvarna head rather than an unspecified universal replacement

Husqvarna designed the T35 spool to come off with the cap, eliminating the need to turn the trimmer upside down while reloading. The spool also incorporates directional arrows and line-locking slots to simplify winding and reassembly.

Documented Applications

The Husqvarna 531300183 T35 Trimmer Head is designed for many compatible Husqvarna straight-shaft trimmers and brushcutters.

Documented applications include select:

• Husqvarna 123L
• Husqvarna 125L
• Husqvarna 128L
• Husqvarna 128LD
• Husqvarna 128LDX
• Husqvarna 223L
• Husqvarna 224L
• Husqvarna 225L
• Husqvarna 232L
• Husqvarna 322L
• Husqvarna 323L
• Husqvarna 324LDX
• Husqvarna 326LS
• Husqvarna 327LS
• Husqvarna 327LDX
• Husqvarna 327RJX
• Husqvarna 430LS
• Select additional Husqvarna 100–500 Series straight-shaft trimmers and brushcutters

Husqvarna's accessory catalog describes 531300183 as fitting most 100–500 Series straight-shaft trimmers and brushcutters, while additional listings document individual applications such as the 123L, 125L, 223L, 225L, 232L, and 322L.

Exact compatibility should still be verified using the equipment model, product number, shaft configuration, and OEM parts documentation.

Tap Advance Line Feed

The T35 is a semi-automatic trimmer head designed to release additional cutting line without requiring the operator to stop and manually pull line from the spool.

During normal operation:

1. Operate the trimmer at the appropriate speed.
2. Lightly tap the trimmer head against the ground.
3. The Tap Advance mechanism releases additional cutting line.
4. Centrifugal force extends the line from the head.
5. The cutting system returns to normal trimming operation.

This design allows the operator to replenish worn cutting line as needed while working.

Split Spool Design

A major feature of the Husqvarna T35 is its split spool construction.

The design helps:

• Reduce cutting-line tangling
• Reduce line welding
• Keep the line sections organized
• Simplify winding
• Maintain proper line positioning
• Make routine reloading easier

Husqvarna also incorporates directional winding arrows into the spool so the operator can quickly determine the proper winding direction. Two key slots help hold the line in place while the cap is reinstalled.

531300183 vs. 537388101 T35 Universal

The 531300183 should not be confused with the 537388101 T35 Universal.

Husqvarna's 2026 dealer catalog clearly distinguishes the two: 531300183 is the straight-shaft Husqvarna T35 with a 10 mm/LH arbor, while 537388101 is the Universal T35 supplied with multiple mounting adapters.

T35 vs. T35X

The standard T35 should also be distinguished from the T35X.

The T35X incorporates a ball-bearing Tap Advance button designed for additional durability, while 531300183 is the standard T35 Tap Advance configuration.

Husqvarna currently lists these as separate products:

• 531300183 – T35 Tap Advance, 10 mm LH
• 596277001 – T35X, 10 mm LH
• 596277101 – T35X, 12 mm LH

Therefore, a T35X should not automatically be substituted when the equipment specifically calls for 531300183.

Replacement Spool

The complete 531300183 T35 Trimmer Head should also be distinguished from the replacement spool.

Husqvarna lists:

• 531300183 – Complete T35 Tap Advance Trimmer Head
• 531300364 – T35 Replacement Spool with Line
• 596784001 – T35 Trimmer Spool and Line

Husqvarna's current T35 documentation identifies 531300183 as the complete T35 Trimmer Head M10 LH, while the replacement spool components are listed separately.

This distinction is useful when only the spool or line is worn and the complete head does not require replacement.

Common Reasons for Replacement

Replacement of the 531300183 T35 Trimmer Head may be appropriate if the existing head has:

• Cracked housing
• Broken housing
• Excessively worn tap surface
• Damaged spool
• Damaged eyelets
• Line-feed problems
• Excessive wear
• Damaged mounting threads
• Missing internal components
• Difficulty retaining cutting line
• Repeated line-feed failures
• Severe impact damage
• Become loose or unstable during operation

If only the spool is worn, consider whether replacing the serviceable spool component rather than the complete head is appropriate.

Trimmer Head Inspection

When replacing the T35 head, inspect related components including:

• Output shaft
• Gearbox
• Shaft threads
• Cutting guard
• Line-limiting blade
• Trimmer line
• Mounting hardware
• Gear-head components

Do not install a new trimmer head onto damaged or severely worn output-shaft threads.

Important Notes

• Verify compatibility with your exact Husqvarna string trimmer or brushcutter before ordering.
• Match part number 531300183 with your equipment's parts documentation whenever possible.
• The alternate formatted part number is 531 30 01-83.
• Husqvarna's current product description is “T35 TRIMMER HEAD M10 LH.”
• 531300183 is the non-universal Husqvarna T35 configuration.
• Husqvarna's 2026 dealer catalog specifies a 10 mm / LH arbor/thread.
• Do not confuse 531300183 with 537388101, which is the Universal T35.
• The Universal T35 includes multiple adapters for other manufacturers; 531300183 does not use that universal adapter configuration.
• Do not confuse the complete head with the 531300364 replacement spool.
• Husqvarna's current T35 listing separately identifies 531300364 as the replacement spool and 531300183 as the complete M10 LH head.
• The T35 uses a semi-automatic Tap Advance line-feed system.
• Husqvarna's current specifications identify suitable line dimensions for the non-universal T35 as approximately 2.4–2.7 mm.
• Use only cutting-line sizes appropriate for both the T35 head and your specific trimmer.
• Do not install oversized cutting line merely because it can physically fit through the eyelets.
• Excessively heavy line can increase load on the engine, clutch, gearbox, and shaft.
• Follow the directional arrows on the spool when installing replacement line.
• Wind the line evenly to help prevent binding and feed problems.
• Use the spool's retaining slots to hold the line during reassembly.
• Make sure the spool and cap are fully seated before operation.
• Inspect the tap button and spool for excessive wear whenever replacing line.
• Replace cracked or structurally damaged trimmer-head components before continued use.
• Verify that the cutting head is securely installed onto the output shaft.
• Remember that the applicable mounting thread is left-hand, so removal and installation direction may differ from conventional right-hand fasteners.
• Never force the head onto incompatible shaft threads.
• Inspect the gearbox/output shaft if the previous trimmer head became loose during operation.
• Make sure the cutting guard and line-limiting blade are properly installed.
• Never operate the trimmer without the required cutting guard.
• Shut off the engine or motor and allow the cutting attachment to stop completely before servicing the trimmer head.
• Disconnect the spark plug or battery where applicable before installation or major service.
• Wear gloves when handling cutting line and servicing the cutting attachment.
• This listing is for one Husqvarna 531300183 T35 Trimmer Head unless otherwise specified. Replacement spools, additional cutting line, guards, gearboxes, and other trimmer components are sold separately unless explicitly included.
• Match part number 531300183 and the 10 mm/LH mounting configuration with your equipment before ordering to ensure proper fitment.