GX20072 John Deere 42 Inch Deck Belt Part Fit L110 D110 S110 E110 D105 D130 LA105 E130 L100 LA120 D125 E100 S100 LA115 D100 L111 E120 LA135 LA110 S120 LA125 UC32283 D120 L105 L108 Lawn Mower

Compatible WithFor GX20072 / GY20570 42-Inch Mower Deck Applications ONLY.Product Specifications:Effective Length: 103.7" / 2635 mmTop Width: 1/2" / 12.7 mmBelt Thickness: 0.35" / 8.89 mmMaterial: High-Strength Aramid CordsConstruction: Wear-Resistant Wrapped BeltApplication: Mower Deck Blade DriveIMPORTANT: This is the mower deck belt that powers the cutting blades. It is NOT the traction or transmission drive belt that moves the tractor.John Deere Fitment Matrix100 Series Tractors:102, 105, 108, 115, 125, 135D Series:D100, D105, D110, D120, D125, D130E Series:E100, E110, E120, E130L Series:L100, L105, L107, L108, L110, L111, L118, L130LA Series:LA100, LA105, LA110, LA115, LA120, LA125, LA135S Series:S100, S110, S120X Series:X105, X106, X107, X110, X120, X125, X126, X127, X145Sabre Lawn Tractors:1442, 1642HS, 1742HS, 1742PRSelected legacy Sabre 14.542GS and 17.542HS applications may also use this belt. Verify the original belt number and deck configuration before ordering.Scotts Lawn Tractors:L17.542, L1742Additional Legacy Applications:Selected Sabo 108-14.5 and 108-17HS 42-inch deck applications may use this belt. Original belt number and physical dimensions must be verified before purchase.Important Fitment NotesMany mower models were produced with different deck sizes, serial-number ranges, and belt systems. The mower model alone cannot guarantee fitment. Before ordering, please verify that:Your mower has the applicable 42-inch cutting deck.You need the mower deck blade belt, not the transmission drive belt.The original belt or equipment parts diagram specifies GX20072 or GY20570.The required size is approximately 103.7" effective length, 1/2" top width, and 0.35" thickness.Models such as L130, X145, S100, S110, and S120 may have different deck configurations or updated belt specifications. Please confirm the original belt number, mower serial number, and deck size before purchase.UC32283 Size NoticeUC32283 has a similar effective length but uses a wider and thicker profile than GX20072. If UC32283 is printed on your original belt, do not order by length alone. Compare the original belt width, thickness, pulley groove, and equipment parts diagram before purchasing.This belt is not automatically compatible with D140, E140, S130, S140, S160, S170, S180, S220, Z225, John Deere 265, X300 Series, or machines equipped with 38", 46", 48", or 54" mower decks.Installation NotesBefore installation, photograph the original belt routing and inspect the idler pulleys, spindle pulleys, tension arm, tension spring, and belt guides. Incorrect routing, a seized bearing, bent guide, weak tension spring, or misaligned pulley may cause slipping, fraying, overheating, or premature belt failure.Make sure the belt is fully seated in every pulley and positioned inside all belt keepers. Do not twist the belt, force it over a pulley, or apply oil, grease, or belt dressing. Always follow the routing diagram and safety instructions provided with your mower.Why Should You Choose Us?Quality ManufacturingConstructed with high-strength aramid tensile cords to help control stretching and maintain stable power transfer under repeated starts, stops, bending, and reverse-bend operation. The wear-resistant wrapped cover supports smooth pulley engagement and helps protect the belt against friction, heat, grass clippings, and outdoor debris. Proper fitment and routing help maintain consistent blade speed for cleaner and more efficient mowing.After-Sales SupportYour purchase is backed by our lifetime warranty and responsive after-sales support. If you have questions about fitment, routing, installation, slipping, abnormal noise, or premature wear, please contact us through Amazon. For faster assistance, provide your mower model, deck size, original belt number, and clear photos of the belt and pulley route. Our support team will respond within 24 hours and help provide an appropriate troubleshooting, replacement, or warranty solution.All brand names, model numbers, and part numbers are used for compatibility identification only. This is an aftermarket replacement product.

• 【Recommended Replacement】: A worn deck belt can turn smooth mowing into slipping blades, uneven cuts, squealing noise, or sudden belt failure. Replace your GX20072 belt when you notice cracks, frayed edges, glazing, stretching, or reduced blade speed. Built with high-strength aramid cords and a wear-resistant wrapped cover, this 1/2" x 103.7" deck belt is designed to handle repeated flexing, reverse-bend idlers, heat, dust, and demanding mowing conditions. Restore stable power transfer and consistent blade performance for a cleaner, more efficient cut. Verify your original belt number and 42-inch deck configuration before purchase.
• 【Quality Manufacturing】: Built for demanding mower-deck use, this GX20072 belt combines high-strength aramid cords with a wear-resistant wrapped fabric cover. The aramid core helps resist stretching and maintain stable tension, while the woven outer layer protects against abrasion, heat, dust, and repeated flexing around pulleys and reverse-bend idlers. Sized at 103.7" effective length, 1/2" top width, and 0.35" thickness, it supports smooth power transfer, reduced slipping, and consistent blade speed. Its flexible yet tough construction promotes steady engagement, cleaner cuts, and dependable performance throughout demanding mowing seasons.
• 【Wide John Deere Fitment】: Belt size: 103.7" effective length, 1/2" top width and 0.35" thickness. Fits 42-inch mower decks using GX20072/GY20570 on John Deere D100, D105, D110, D120, D125, D130; E100, E110, E120, E130; L100, L105, L107, L108, L110, L111, L118; LA100, LA105, LA110, LA115, LA120, LA125, LA135; S100, S110, S120; S220 with 42-inch deck only; X105, X106, X107, X110, X120, X125, X126, X127, X145; and 102, 105, 107S, 108, 115, 125, 135. This drives the mower blades, not the transmission. L130 fits only when the original belt is GX20072; standard US L130 tractors with 48-inch decks use GX20305 and are not compatible.
• 【Other Brands & Check Before Buying】: Fits Sabo 108-14.5 and 108-17HS; Sabre 14.542GS, 17.542HS, 1442, 1642HS, 1742HS and 1742PR (PC9096); Scotts L17.542 and L1742 when the original deck belt is GX20072/GY20570. Replace a belt showing cracks, frayed edges, glazing, exposed cords, stretching, squealing, jumping, slow blades or uneven cutting. Not every John Deere 42-inch deck uses this belt: it does not fit D140, S130, S140/S160/S170/S180, S240, X350 or Z225/Z235/Z335/Z345. Compare the old part number, deck size, belt width/thickness and routing before purchase. If replacing UC32283, confirm the required cross-section. Inspect pulleys, guides, spring and spindle bearings before installing.
• 【Hassle-Free Support】: Your purchase is backed by our lifetime warranty and responsive after-sales support. If you have questions about GX20072 fitment, 42-inch deck compatibility, belt routing, installation, noise, slipping, or premature wear, please contact us through Amazon. For faster help, include your mower model, deck size, original belt number, and clear photos of the belt and pulley route. Our support team will respond within 24 hours, help identify the cause, and offer troubleshooting guidance or an appropriate replacement or warranty solution. From pre-purchase fitment confirmation to post-installation assistance, we are here to make every mowing season easier and worry-free.