AM136328 Mower Deck Gage Wheel Arm LH Front Or RH Rear Replacement Parts Kit Fit For X300, X304, X310, X320, X324, X340, X360, X500, X520, X530, X534, X540, X590 Lawn And Garden Tractors
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🛒 See Price on AmazonWhat It Is
The AM136328 Mower Deck Gage Wheel Arm is a replacement bracket that holds the gauge wheel on the deck of select John Deere X300 and X500 series lawn tractors. It’s used for both LH front and RH rear positions, helping prevent scalping and providing consistent cutting height on uneven terrain.
Fitment & Compatibility
Before buying, verify your deck size (42", 48", 54", or 60") and model year—this kit fits X300, X304, X310, X320, X324, X340, X360, X500, X520, X530, X534, X540, and X590 tractors with compatible decks. This is an aftermarket replacement for OEM part AM136328; measure the original arm’s bolt hole spacing (typically 3.5" center-to-center) and check that the included hardware matches your deck’s mounting points. Not compatible with older X300 series (pre-2010) or non-John Deere brands.
Key Things to Know
- Quality: Aftermarket steel construction is generally sturdy but may have slightly thinner metal than OEM; inspect for burrs or misaligned holes before installation.
- Installation difficulty: Moderate—requires basic hand tools (socket set, wrench) and lifting the mower deck. Expect 20-40 minutes per arm.
- Common gotcha: The arm can be installed upside down, causing wheel rub or improper height. Note the “LH front” / “RH rear” orientation—the wheel axle hole must face outward.
- Hardware included: Bolts, lock washers, and nuts are typically supplied, but check they match your deck’s thread pitch (usually 5/16"-18). Missing or mismatched hardware is a frequent complaint.
Should You Buy It
If your original arm is bent, cracked, or rusted out, this is a cost-effective fix—about half the price of OEM. It’s best for DIYers with basic mechanical skills who want to restore deck leveling without dealer markup. Skip it if you need exact OEM fit for a commercial-use tractor or if your deck has unusual bolt spacing.
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