GX26422 Mower Deck Belt / 0.51 x 145.65 inches/for John Deere 48" and 54" Decks Z325E Z375R Z355E Z355R Z330M Z365R Z330R ZTrak Zero Turn MowersT1000 T1400 / Aramid Cord

What It Is

This is a replacement mower deck belt, 0.51 inches wide and 145.65 inches long, designed for John Deere 48-inch and 54-inch decks on ZTrak zero-turn mowers (Z300 series) and select T1000/T1400 lawn tractors. It drives the blade spindles from the engine pulley.

Fitment & Compatibility

• Deck size: Fits 48-inch and 54-inch fabricated decks only. Do not use on 42-inch or 60-inch decks.
• Model check: Confirmed for Z325E, Z375R, Z355E, Z355R, Z330M, Z365R, Z330R, T1000, T1400. Verify your model letter suffix (e.g., Z355R vs Z355E) as deck routing may differ slightly.
• OEM cross-reference: Replaces John Deere part GX26422. Aftermarket belt, not OEM.
• Measure before buying: Lay your old belt flat and measure length (end to end) and width. Must match 145.65” x 0.51”. A 1/4” difference in length can cause slipping or premature wear.

Key Things to Know

• Aramid cord construction: Stronger than standard rubber belts, resists stretching and heat buildup during heavy mowing.
• Installation difficulty: Moderate. You’ll need to remove the deck or use a belt tension release tool. Refer to your deck diagram for routing—reverse routing will cause belt failure.
• Common gotcha: This belt is slightly thicker than some OEM belts. If your pulleys are worn, it may ride higher and cause noise or shedding. Inspect pulleys for burrs before installing.
• Break-in period: Expect some initial dusting and slight tension loss after the first 1-2 hours. Recheck tension after first use.

Should You Buy It

Buy this if you need a reliable, cost-effective replacement for a worn OEM belt on a 48” or 54” John Deere ZTrak or T-series mower. It’s a solid upgrade over standard rubber belts for durability, but avoid it if you prefer exact OEM fitment or have heavily worn pulleys that might cause an aftermarket belt to fail prematurely.