ApplianPar 4Pcs Deck Wheel Bolt Bushing Nut Hardware Kit for Exmark Lawn Mowers Replaces 103-3168 103-4051 1-603602 603602 225-205

What It Is

This hardware kit includes four deck wheel bolts, bushings, and nuts designed to secure the anti-scalp wheels on Exmark lawn mower decks. It’s a direct replacement for worn or missing hardware that causes wheels to wobble or detach, ensuring even cut height and preventing scalping on uneven terrain.

Fitment & Compatibility

Before buying, confirm your mower uses the OEM part numbers 103-3168, 103-4051, 1-603602, 603602, or 225-205. This kit fits most Exmark Lazer Z, Quest, and Pioneer series with standard anti-scalp wheels. Check your deck’s wheel mounting holes—these bolts are 5/16-18 thread with a 1.5-inch shoulder length. Measure your existing bolt length and bushing inner diameter (about 0.5 inches) to match. If your deck uses metric hardware or a different shoulder length, this kit won’t work. Aftermarket compatibility is high for Exmark models, but verify your deck serial number if unsure.

Key Things to Know

• Quality: Bolts are zinc-plated steel with nylon lock nuts to resist vibration loosening. Bushings are hardened steel, not plastic, for longer life.
• Installation: Easy—just remove old hardware, slide the bushing into the wheel, insert the bolt through the deck bracket and wheel, then tighten the nut. Use a wrench; no special tools needed.
• Common gotchas: The bushing is a tight fit in some aftermarket wheels—file the wheel hole slightly if needed. Do not overtighten; the wheel should spin freely but not wobble. The nylon nut can strip if cross-threaded—hand-start it first.
• Quantity: You get four complete sets, enough for most Exmark decks with four anti-scalp wheels. Some older decks use six wheels—buy two kits.

Should You Buy It

If your Exmark’s anti-scalp wheels are loose, wobbling, or missing hardware, this kit is a solid, cost-effective fix. It’s ideal for DIY owners who want a direct OEM-style replacement without paying dealer prices. Avoid it only if your deck uses metric bolts or non-standard wheel sizes.