The guide bar bolt 55 51 254 257 Husqvarna 503684242 is compatible with the following Husqvarna chainsaw models:
- Husqvarna 254: 19942300001-20013500000, 20013500001-Current
- Husqvarna 257: 19942300001-20013500000, 20013500001-Current
- Husqvarna 261 EPA: 19992300001-Current, USA ONLY 19981000001-19992399999
- Husqvarna 262 XP: 19942300001-Current, 19981400001-19992300000
- Husqvarna 262 XPH: 1993-12
- Husqvarna 51 EPA: 19982300001-Current
- Husqvarna 55 EPA: 19982300001-Current
- Husqvarna 55 EU1: 20051400001-20070500001-Current
- Husqvarna 55 RANCHER EPA: 19983100001-Current