NEW Replacement Deck 54" Belt for John Deere Z375R 2017 060001-080000 GX26422 1/2" X 144.5"

What It Is

This is a replacement 54-inch deck drive belt for the John Deere Z375R zero-turn mower (2017 model, serial numbers 060001 to 080000). It transfers power from the engine deck pulley to the two spindle pulleys, spinning the blades to cut grass.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Must be a 54-inch deck (not 48 or 60).
• Machine model & serial range: Fits John Deere Z375R 2017 models with serial numbers 060001 through 080000. Check your mower’s serial plate under the seat or on the frame.
• OEM cross-reference: Replaces OEM part number GX26422. Original belt is 1/2 inch wide and 144.5 inches long. Measure your old belt’s width and length to verify—aftermarket belts can vary slightly, but this one matches the spec.

This belt will not fit other John Deere Z-series models (like Z335E, Z345R, or Z530M) unless they share the same 54-inch deck and GX26422 OEM number.

Key Things to Know

• Quality vs. OEM: This is an aftermarket replacement, not John Deere factory. Expect slightly less durability in heavy-duty or wet conditions, but fine for residential use.
• Installation difficulty: Moderate. You’ll need to release deck tension, route around three pulleys and the idler, then re-tension. A belt diagram is helpful—take a photo before removing the old belt.
• Check pulley condition: Worn or bent pulleys will shred any belt quickly. Inspect all deck pulleys for smooth rotation and sharp edges before installing.
• Common gotcha: The belt must be routed correctly around the idler arm (usually spring-loaded). If it flips or rides off-center, the deck will vibrate and blades may not engage.

Should You Buy It

If you own a 2017 John Deere Z375R with a 54-inch deck and need a budget-friendly belt for standard residential mowing, this is a solid pick. It won’t match OEM longevity for commercial use or heavy mulching, but at $28.98 it’s a practical swap for most homeowners.