John Deere GX20006 Lawn Tractor Transmission Drive Belt Genuine Original Equipment Manufacturer (OEM) Part

What It Is

The John Deere GX20006 is a genuine OEM transmission drive belt for select John Deere lawn tractors. It transfers power from the engine to the transmission, enabling forward and reverse movement.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This belt fits John Deere models including the D100 series (D100, D105, D110, D120, D125, D130, D140, D150, D155, D160, D170), LA series (LA105, LA115, LA125, LA135, LA145, LA155, LA165, LA175), and L100 series (L100, L107, L108, L110, L111, L118, L120, L130). It is not for zero-turn or X-series tractors. The belt measures 1/2 inch wide and 93.5 inches long. Always verify your original belt part number or measure your old belt’s length and width. OEM ensures exact fit; aftermarket belts may vary slightly in length or material.

Key Things to Know

• Genuine OEM quality – Made to John Deere specs, so it matches the original belt’s tension, width, and material. Less likely to stretch or slip than budget aftermarket options.
• Moderate installation – Requires removing the mower deck and routing the belt around pulleys and tensioner. A diagram or manual is helpful. Expect 30–60 minutes for a first-time install.
• Common gotcha – The belt must be routed exactly as shown in your model’s manual. Wrong routing can cause poor drive or belt damage. Also check the tensioner spring and pulleys for wear.
• Price is competitive – At $25.92, this OEM belt is often only a few dollars more than aftermarket, but offers better durability and fit.

Should You Buy It

If you own a compatible John Deere D100/LA/L100 series tractor and want a hassle-free, reliable replacement that matches the original exactly, this is the right choice. It’s ideal for DIYers who value fit and longevity over saving a couple of bucks on an aftermarket belt.