AUC11476 High Back Riding Mower Seat for John Deere Garden Tractors - Fits Models 135 145 D125 D140 E130 L110 L130 LA130 D110 D120 D130 D150 E120 E140 E150 G110 L100 L105 and More - Replaces GY20496

What It Is

The AUC11476 is an aftermarket high-back riding mower seat designed to replace the original seat on many John Deere garden tractors and lawn tractors. It’s intended for residential mowing, offering a padded, contoured backrest for better support during longer mowing sessions.

Fitment & Compatibility

Before buying, confirm your mower’s model and deck size. This seat fits John Deere 100 and 200 series garden tractors, including models like the 135, 145, D125, D140, E130, L110, L130, LA130, D110, D120, D130, D150, E120, E140, E150, G110, L100, and L105. It replaces OEM part GY20496.

Critical checks:

• Mounting holes: Measure your seat pan bolt pattern—center-to-center distance should be roughly 5.5” x 5.5” (common for these Deere models). If your tractor uses a different pattern (e.g., 7” x 7”), this seat won’t bolt on without adapter plates.
• Deck size: Works with 38” to 54” decks, but always verify your specific model’s seat pan geometry (some LA/L models have a sloped pan that may require shimming).
• Safety switch: This seat has a built-in operator presence switch (two-pin connector). Ensure your tractor’s wiring harness matches—most Deeres use a standard flat two-pin connector, but older models may need a pigtail adapter.

Key Things to Know

• Quality: At $112.99, it’s a budget-friendly aftermarket option. Expect vinyl covering (not heavy-duty marine-grade) and medium-density foam. Longevity is decent for occasional use but may show wear faster than OEM under heavy sun or heat.
• Installation difficulty: Easy for DIY—requires removing four bolts on the old seat, unplugging the safety switch, and reversing steps. No special tools needed. Allow 20–30 minutes.
• Common gotchas: The seat may sit slightly higher than OEM (about 1–2 inches) due to thicker padding. Check your overhead clearance if you have a low canopy. Also, the backrest angle is fixed—not adjustable—so test comfort before final tightening.
• Switch compatibility: Some users report the safety switch connector is reversed polarity. If your mower won’t start after install, swap the two wires in the connector.

Should You Buy It

This seat is a solid budget replacement for a worn-out original on a residential John Deere lawn tractor, especially if you want a high-back for extra lumbar support. It’s not built for commercial use or extreme weather, but for the price, it’s a practical upgrade if your current seat is sagging or torn. Skip it if you need a heavy-duty, adjustable, or low-profile seat—look at OEM or premium aftermarket options instead.