ITEM NAME:5x Oil Pump Worm Gear Fit For Husqvarna 357XP 359 EPA 357 XP Chainsaw Replace Oil Pump Pinion Worm Gear Fit For Husqvarna 357XP 359 EPA 357 XP Chainsaw 503912903 SPECIFICATIONS.(Oil Pump Pinion Worm Gear Fit For Husqvarna 357XP 359 EPA 357 XP Chainsaw 503912903. Compatible with: fit for Husqvarna 357XP 357 359 EPA Chainsaw. Item included: 5 x Worm Gear. 3) Perfect match for the original one.