Exmark 117-0361 Caster Wheel Lazer Z AC AS HP LC XP Pioneer E S Series 103-0065

What It Is

This is an OEM Exmark caster wheel assembly (part #117-0361) designed for the front of zero-turn mowers, specifically the Lazer Z, AC, AS, HP, LC, XP, Pioneer, and E-Series models. It replaces the older part #103-0065 and provides the swiveling front support needed for maneuverability and stability on turf.

Fitment & Compatibility

Before buying, verify your mower model and deck size. This wheel fits Exmark Lazer Z (all series), Lazer Z AC, AS, HP, LC, XP, Pioneer, and E-Series models with 20-inch or 22-inch front caster wheels. Check your existing wheel assembly for the part number (stamped on the bracket) – it must match 117-0361 or the superseded 103-0065. Measure the bolt pattern: this uses a 3/8-inch bolt with a 2.25-inch bolt hole spacing (center-to-center). Also confirm the tire diameter (typically 11 inches) and width (4 inches). Not compatible with non-Exmark mowers or older Lazer Z models with different caster brackets.

Key Things to Know

• Quality: OEM Exmark part – built to original specs with a heavy-duty steel bracket and a sealed bearing hub. Expect longer life than aftermarket alternatives, but at a higher price.
• Installation difficulty: Moderate. You’ll need a socket set, a torque wrench (recommended 25-30 ft-lbs on the mounting bolt), and possibly a drift punch to remove the old caster pin. Plan 30-45 minutes per wheel.
• Common gotcha: The included tire is foam-filled (flat-proof), so don’t attempt to inflate it. If you need a pneumatic tire, this isn’t the right assembly. Also, the bracket may require greasing at the pivot point annually – check your manual.
• Wear indicator: If your mower wobbles at the front or the caster wheel won’t swivel freely, the bearing is likely shot. Replace both front wheels at the same time to maintain even wear and handling.

Should You Buy It

Buy this if you own a compatible Exmark zero-turn and need a direct OEM replacement for a worn-out front caster wheel – especially if you want flat-proof reliability and don’t mind paying a premium for exact fit and durability. Skip it if you’re on a tight budget (aftermarket options exist for ~$60-100) or if your mower uses a different caster design.