- https://www.amazon.com/dp/B0CKR1TVTN
- Are you experiencing issues with your trimmer or brushcutter? Maybe it’s struggling to cut through thick weeds or grass, or perhaps the gear head is showing signs of wear and tear. If so, it might be time to replace the gear head. In this post, we’ll explore a high-quality replacement gear head that fits a wide range of Husqvarna and Jonsered models.

1. Comprehensive Packing List
When you purchase this replacement gear head, you’ll receive a complete package that includes everything you need for a successful installation. The package consists of:
- 1 x Gear head
- 1 x Thrust plate
- 1 x Thrust washer
- 1 x Rider plate
- 2 x Collar nut (M10 left-hand thread)
- 2 x Stainless steel screws
This comprehensive kit ensures that you have all the necessary components to replace the gear head without needing to purchase additional parts separately.
2. Detailed Specifications
This gear head is designed with precision to fit a variety of models. It features:
- 10 teeth on the gear head
- An operating rod diameter of 1″ (25.4mm)
- 7 teeth at the bottom
These specifications make it a perfect match for many popular trimmers and brushcutters. Before ordering, it’s essential to confirm that the model of your strimmer gear head matches these specifications to ensure compatibility.
3. Wide Compatibility with Husqvarna Models
This replacement gear head is compatible with numerous Husqvarna models, making it a versatile choice for many users. It fits the following models:
- Husqvarna 525L, 525LK, 525LS, 525LX, 525RJD, 525RJX, 525RK, 525RS, 525RXT, and 535LST

It also fits other Husqvarna models such as the 123LD, 322C, 322L, 322R, 322T, 323L, 323LD, 323R, 323R-II, 323RJ, 324LDX, 324LX, 324RX, 325CX, 325L, 325LDX, 325LX, 325LXT, 325RDX, 325RJ, 325RJX, 325RXT, 325RX, 325TX, 326L, 326LS, 326LX, 326LDX, 326RJX, 326RX, 326SX, 327LDX, 327LS, 327LX, 327RDX, 327RJX, 327RX, TA850, TA1100, CSA850, BCA850, 522L, 524L, 524LK, 524R, 525L, 525LK, 525LS, 525LX, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RXT, 535LK, and 535LST.
4. Compatibility with Jonsered Models
In addition to Husqvarna models, this gear head also fits several Jonsered models, making it an excellent choice for users of both brands. It is compatible with:
- Jonsered BC2125, GC2125, GC2125C, and GT2125
This wide compatibility ensures that you can find a suitable replacement for your trimmer or brushcutter, regardless of the brand.

5. Multiple Part Numbers
To make it easier to find the right replacement, this gear head is available under multiple part numbers. These include:
- 537199202
- 537199201
- 503941201
- 503941101
- 537041001
- 537333802
- 536503801
These part numbers are cross-referenced with various models, ensuring that you can easily identify the correct replacement for your specific trimmer or brushcutter.
Conclusion
If you’re looking to replace the gear head on your Husqvarna or Jonsered trimmer or brushcutter, this replacement gear head is an excellent choice. With its comprehensive packing list, detailed specifications, wide compatibility with numerous models, and multiple part numbers, it ensures a seamless and reliable replacement process. Say goodbye to performance issues and hello to a well-functioning trimmer with this high-quality gear head.

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