GX20006 Mower Tractor Transmission Drive Belt 1/2" X 89" for John Deere GX20006 D110 D120 D125 D130 D140 D150 D140 D150 D155 D160 D170 Murray 037X81MA 37X81 37X88MA 710213

What It Is

The GX20006 transmission drive belt (1/2" x 89") transfers power from the engine to the tractor’s transmission, enabling forward/reverse movement. It’s designed for select John Deere and Murray lawn tractors with hydrostatic or manual transmissions.

Fitment & Compatibility

• Check model: Fits John Deere D100 series (D110, D120, D125, D130, D140, D150, D155, D160, D170) and Murray models using belts 037X81MA, 37X81, 37X88MA, or 710213.
• Measure your old belt: Exact length is 89 inches; width is 1/2 inch. A belt too long or short will slip or damage pulleys.
• OEM vs aftermarket: This is an aftermarket replacement—verify your original part number matches GX20006 or cross-reference with OEM John Deere (e.g., GX20006, M156138).
• Deck size irrelevant: This is a transmission belt, not a deck belt. Check your tractor’s transmission type (hydrostatic or manual) to confirm compatibility.

Key Things to Know

• Quality: At $12.88, it’s a budget option. Expect adequate durability for residential use, but heavy commercial mowing may cause faster wear.
• Installation difficulty: Moderate—requires removing the mower deck and belt guards. A diagram or video helps; note belt routing before removal.
• Common gotcha: Some users report the belt runs slightly tight on certain models—double-check tension after installation. If it squeals or slips, adjust the idler pulley.
• Reviews: 4.4/5 from 7 ratings—solid for the price, but limited feedback means fewer data points on long-term reliability.

Should You Buy It

For homeowners with a compatible John Deere D100-series or Murray tractor who need a quick, low-cost replacement for a worn transmission belt, this is a solid choice. Skip it if you require heavy-duty durability or have a different model—verify fitment first to avoid returns.