ApplianPar 3/16 Inch Plate Steel Mower Deck Spindle Reinforcement Ring with Bolts for John Deere Mower D100 D110 D120 D130 D140 D160 L100 L110 L120 L130 LA105 LA165 X110 X120 X140 Set of 2

What It Is

This is a set of two 3/16-inch plate steel reinforcement rings designed to strengthen the mower deck spindle mounting area on select John Deere lawn tractors. They prevent the stamped steel deck from cracking or elongating around the spindle bolt holes, a common failure point on residential decks under heavy use.

Fitment & Compatibility

Check your deck size and model series. These rings fit John Deere 100-, LA-, and X-series tractors with 42-inch to 54-inch stamped steel decks, including models D100–D160, L100–L130, LA105/165, and X110/X120/X140.

Confirm OEM spindle bolt pattern. The rings use the same 3-hole pattern as the factory spindle. Measure the center-to-center distance between your spindle bolts—these rings match the standard 3.5-inch pattern found on most of the listed models.

Not for fabricated decks or older series. If your deck is a fabricated (welded) unit or you have a pre-2008 model like an LX or GX series, these rings will not fit.

OEM vs aftermarket. These are a direct-fit aftermarket reinforcement, not a replacement for a broken spindle. They install under the spindle mounting bolts, between the spindle base and the deck.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the spindle, place the ring over the bolt holes, and re-torque bolts to 30–35 ft-lbs. No drilling or welding required.
• Quality: 3/16-inch plate steel with black oxide finish resists rust and holds up better than the original stamped deck metal. The included bolts are Grade 8, which is stronger than the factory hardware.
• Common gotcha: These rings add about 1/8-inch thickness under the spindle. Ensure your blade clearance to the deck underside remains safe (at least 1/4 inch) after installation.
• Best for: Preventing future damage, not fixing existing cracks. If your deck already has elongated holes, you may need to weld or use a different repair method first.

Should You Buy It

If you own one of the listed John Deere models and mow rough terrain, thick grass, or have a deck that’s over five years old, this $18 set is a cheap, effective way to prevent spindle hole failure. It’s not needed for occasional light mowing, but for regular use or larger decks, it’s a smart upgrade that can extend deck life by years.