Replaces Husqvarna 501630101
FITS HUSQVARNA MODELS:  42, 133, 154, 242 & 246.

Replaces OEM#: FRONTIER 100073
HUSQVARNA 501706701
JONSERED 507100073
PIONEER/PARTNER 5043527-05
SIMPLICITY/ALLIS CHA F315882
FITS FRONTIER TML MODELS.
FITS HUSQVARNA MODELS: OLDER 34, 35.
FITS JONSEREDS MODELS: M36, 361, 361E, 365, 370 & 380.
FITS PARTNER MODELS: MINI P, P2, 3, 4, 330, 340 & 350.
FITS SKIL MODELS: 1600-1616.

Replaces Husqvarna 501520402, 501520401
FITS HUSQVARNA MODELS:  61 RANCHER, 162, 181, 266, 268 & 272.

Replaces Husqvarna 501630201, 501460401
FITS HUSQVARNA MODELS:  36R, ALL SERIES , 44, 45, 140, 165R, 240, 244, 340 & 444.

Replaces Husqvarna 501763101
FITS HUSQVARNA MODELS:  41, 50 RANCHER, 51, 55.