For Husqvarna · Part T45

T45 T45X Trimmer Head fits for Husqvarna 240R, 250R, 250Rx String Trimmer

Name: T45 T45X Trimmer Head fits for Husqvarna 240R, 250R, 250Rx String Trimmer
Brand: NZOXVIK
SKU: B0HDS1S5NL

$24.99 2-pack

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Specs

Part numberT45

Fits brandHusqvarna

Platform / voltageHusqvarna

Pack2-pack

Part typeTrimmer heads

Compatible models240R, 250R, 250Rx, T55X, 35cc-55cc, 545RX, 545RXT, 535LS, 535RXT, 535RX, 553RBX, 553RS, 543RS, 555FX, 555FRM, 555RXT, 335LS, 335RX, 335FR, 345FX, 345RX, 345FR, 343R, 343FR, 143R-II, 135R, 153R, 502235201, 544216401, 537295804, M12x1

About this item

Replaces part number(s): These 2pcs Trimmer head replacement fits for husqvarna Tap Advance trimmer head, part number #596297901, #544972601, # 544972603, #578446801 - Also written as # 578 44 68 01, 5784468-01, 578 44 68-01; Fit for husqvarna T45X, T45, T55, T55X Tap Advance trimmer head, part number #578447001, #578 44 70-01 | M12 × 1.75 LH Left Hand
T45/T55X Trimmer Spool for Husqvarna 500 series 35cc-55cc straight shaft gas trimmers , like model 545RX, 545RXT, 535LS, 535RXT, 535RX, 553RBX, 553RS, 543RS, 555FX, 555FRM, 555RXT, Cutting Width 17-21inch
544972603 578446801 Replacement Head for Husqvarna 335LS, 335RX, 335FR, 345FX, 345RX, 345FR, 343R, 343FR 17-19in Straight Shaft Gas String Trimmer/Brush Cutter
T45X String Trimmer Head Replacement fits for Husqvarna 143R-II, 135R, 153R, 240R, 250R, 250RX 16-18in Straight Shaft Gas String Trimmer/Brush Cutter
Compatible with Husqvarna gear heads: 502235201, 544216401, 537295804 and other M12 × 1.75 LH gear shafts. Fits models such as 143R-II, 240R, 250R, 335RX, 343R, 345RX, 535RX, 535RXT, 543RS, 545RX, 545RXT, 555FX etc.
Works with original Husqvarna M12 × 1.75 LH gear heads including 502235201 (343/345/545 series) and 544216401 (535 series).
Universal Fit for M12 x 1.75 LH Gear Shafts: This premium T45/T45X trimmer head replacement fits heavy-duty trimmers with an M12x1.75 Left Hand thread shaft—no adapters required. Engineered for high-displacement professional straight-shaft gas trimmers (40cc to 50cc+), it is the ultimate upgrade for commercial models like 143R-II, 543RS, 545RX, and 545RXT. Note: The T45, T45X, T55, and T55X versions ALL share this identical M12x1.75 LHF mounting thread.
Package includes: 2Pack T45X/T55 Tap Advance Trimmer Heads for Husqvarna 545RX, 545RXT, 535LS, 535RXT, 535RX, 553RBX, 553RS, 543RS, 555FX, 555FRM, 555RXT, M12 Thread 1.75 LH

Overview

The T45 / T45X is a heavy-duty commercial bump feed trimmer head designed for larger Husqvarna brushcutters and string trimmers including models 240R, 250R, and 250Rx. It features an M12 x 1.75mm left-hand thread and a ball-bearing mounted bump knob to reduce ground wear. The package contains 1 T45 trimmer head.

Specifications

Item Weight: 1.6 ounces
Manufacturer: Nzoxvik
Item model number: T45X trimmer head replacement
Package Quantity: 2-pack

Compatibility

Compatible with Husqvarna clearing saws and trimmers 240R, 250R, 250Rx, 335LS, 343R, 345Rx, 545Rx, and 555RXT with M12 x 1.75mm LH arbors.

Check the model label on your tool or appliance before ordering.

Frequently asked questions

How do I check the fit?

Compare the model number on your tool or appliance with the list on this page. A match means that model is named in the listing. If it is not listed, the part is not claimed to fit.

Is this an OEM part?

No. This is an aftermarket replacement. The brand name describes compatibility only. NZOXVIK is not the tool or appliance manufacturer.

Where is the model number?

Check the label on the tool housing, shaft, or appliance frame. Enter the full model, not a shorter prefix.