John Deere Original Equipment Depth Gauge #AM130907

What It Is

The John Deere Original Equipment Depth Gauge #AM130907 is a replacement part used to set and verify the cutting height on select John Deere riding lawn mowers and zero-turn mowers. It’s a simple plastic or metal tool that slides under the mower deck to measure blade-to-ground clearance.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This depth gauge is designed for John Deere models with 42-inch, 48-inch, and 54-inch stamped steel decks, including the X300, X500, Z500, and Z600 series. It does not fit fabricated decks or older 100-series models (e.g., L100, LA100) without checking the deck design. Measure the distance between the blade tip and the ground if you’re unsure—this gauge is calibrated for 1-inch to 5-inch increments. It’s OEM John Deere, so aftermarket alternatives may be cheaper but less precise. Always verify your mower’s deck part number against the AM130907 listing.

Key Things to Know

• Quality: OEM John Deere ensures accurate, repeatable height settings—better than a tape measure or guesswork.
• Installation: No tools needed. Just slide it under the deck with the mower off and blades stopped. Check all four corners for leveling.
• Gotchas: The gauge is specific to certain deck types; using it on a fabricated deck or a non-John Deere mower may give false readings. Also, it’s easy to misplace—store it with your mower manual.
• Durability: Plastic versions can crack if stepped on or left in the sun. Handle with care to extend its life.

Should You Buy It

If you own a compatible John Deere riding mower and want consistently even cuts without trial-and-error, this $16.46 gauge is a no-brainer. It’s cheap, simple, and far more reliable than eyeballing it. Skip it if your mower has a dial-style height adjustment or you’re fine using a ruler.