GX20006 Drive Belt/Kevlar Cord / 1/2" X 89" - Compatible with John Deere 105 115 125 135 145 D110 D120 D125 D130 D140 D150 L110 L118 L120 L236 L130

What It Is

This is an aftermarket drive belt (part number GX20006) for select John Deere lawn tractors, designed to transfer power from the engine to the mower deck or transmission. It’s reinforced with Kevlar cord for added durability, measuring 1/2 inch wide by 89 inches long.

Fitment & Compatibility

Before buying, verify three things: deck size, model year, and original part number. This belt fits John Deere 100-series (105, 115, 125, 135, 145) and D100-series (D110, D120, D125, D130, D140, D150) tractors, plus L-series (L110, L118, L120, L236, L130). It replaces OEM part GX20006. Check your existing belt’s length and width—if it’s not exactly 1/2" x 89", this won’t work. Also confirm your deck size (typically 42" or 48" for these models). Aftermarket belts may vary slightly in fit; if your deck has a belt tensioner, ensure it can adjust for minor length differences.

Key Things to Know

• Kevlar cord adds strength but doesn’t guarantee longer life—proper tension and alignment matter more.
• Installation difficulty is moderate; you’ll need to remove the deck, route the belt around pulleys, and re-tension. A diagram helps.
• Common gotcha: the belt can slip if pulleys are worn or dirty. Clean pulleys and check for damage before installing.
• Price is competitive ($18.99) vs. OEM ($30–$40), but quality can vary between aftermarket brands.

Should You Buy It

This belt is a solid budget option for DIY owners of compatible John Deere tractors who need a quick replacement for a worn or broken drive belt. It’s not for commercial use or high-hour mowing—consider OEM if you want guaranteed fit and longer life. Check your belt’s condition and pulley alignment first to avoid installation headaches.