John Deere Original Equipment 42 inch Complete Replacement Green Deck - BUC11055 Review

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★œ 4.6/5 (144 reviews)
$999.99
Brand: John
John Deere Original Equipment 42 inch Complete Replacement Green Deck - BUC11055
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Overview

The John Deere Original Equipment 42-inch Complete Replacement Green Deck (BUC11055) isn’t a mower you buy for fun—it’s a precision replacement part for when your original deck has rusted through, cracked, or simply worn out. Designed specifically for John Deere lawn tractors with a 42-inch cutting path, this deck is for owners who want to restore their tractor to factory-new performance without buying a whole new machine. It’s a serious investment at $999.99, but for the right person, it’s cheaper than a new tractor and far more reliable than a third-party knockoff.

Who Should Buy This

  • Owners of aging John Deere tractors (10+ years old) – If your deck has visible rust holes, cracked weldments, or bent spindles, this replacement restores your tractor to original specs. It’s for those who plan to keep their machine running another decade.

  • DIY mechanics who value OEM fit – You’ve dealt with aftermarket decks that don’t line up or require shims. This one bolts on with no modifications, saving hours of frustration.

  • Homeowners with 1 to 2 acres of flat or gently rolling turf – A 42-inch deck is the sweet spot for mid-sized lawns—wide enough to finish quickly, narrow enough to navigate gates and flower beds.

  • Sellers or flippers restoring a tractor for resale – A genuine John Deere deck adds $300–500 in resale value over a generic replacement, making this a smart investment if you plan to sell.

Key Features Breakdown

OEM John Deere Construction – This isn’t a stamped-steel budget deck. It’s built from heavy-gauge steel with reinforced weldments at stress points. The “Original Equipment” label means it matches the factory tolerances your tractor was designed for—no wobble, no misaligned belt pulleys.

42-Inch Cutting Width – That’s 3.5 feet of blades, which covers a 1-acre lawn in about 30–40 minutes. It’s wide enough to be efficient but compact enough to fit through standard 4-foot gates.

Green Powder Coat Finish – The factory coating is thicker and more chip-resistant than aftermarket paints. It’s not indestructible, but it holds up better to grass clippings, moisture, and road salt than a rattle-can job.

Includes Spindles and Pulleys – Unlike some replacement decks that sell bare metal, this one comes with the spindle assemblies and pulleys pre-installed. That saves you roughly $150 in parts and 2 hours of assembly time.

Compatibility with Select John Deere Models – Fits L100, L110, L120, L130, LA100, LA110, LA120, LA130, LA140, LA150, LA165, and D100 series tractors built from the mid-2000s onward. Always verify your model and serial number before ordering.

Pros

  • Perfect OEM fit – Every bolt hole, belt guide, and spindle mount lines up exactly. No drilling, no shimming, no cursing.
  • Built to last – The heavy-gauge steel deck handles rocks, roots, and bumps better than thin aftermarket decks that dent on the first season.
  • Pre-assembled spindles – You’re not wrestling with bearing presses or alignment tools. It’s ready to install out of the box.
  • Restores original cut quality – A worn deck leaves uncut strips and scalped patches. This deck gives you that factory-fresh, even cut across the entire width.
  • Better resale value – A tractor with a genuine John Deere deck sells faster and for more money than one with a no-name replacement.
  • Widely available parts – Blades, belts, and spindles are stocked at every John Deere dealer and most big-box hardware stores.

Cons

  • Expensive – At $999.99, this deck costs more than many used riding mowers. If your tractor is near the end of its life, it may not be worth it.
  • Heavy – The deck weighs around 80–90 pounds. You’ll need a second person or a hydraulic lift to install it safely. Not a one-person job.
  • Not universal – This only fits the specific John Deere models listed. Double-check your tractor’s model number before ordering—returns are a hassle.
  • No blade spindles included – Wait, yes they are included, but the blades themselves are not. You’ll need to buy new blades separately (about $30–50).

Bottom Line

The John Deere BUC11055 replacement deck is the right choice if your current deck is beyond repair and you own a compatible tractor that still runs strong. It’s not cheap, but it’s cheaper than a new tractor, and the OEM fit eliminates the headaches of aftermarket parts. For homeowners with 1–2 acres who plan to keep their John Deere for another 5–10 years, this deck pays for itself in reliability and cut quality. If your tractor has engine problems or frame rust, spend that $1,000 on a newer machine instead. But for a solid tractor with a rotten deck, this is the best fix money can buy.

Frequently Asked Questions

Q: Will this deck fit my John Deere LA140?
A: Yes, the BUC11055 fits LA140 models built from 2005 onward. But always check the serial number range—John Deere made minor design changes in 2012 that affect belt routing. If your tractor is a 2013 or later, you may need a different part number.

Q: Can I install this deck myself?
A: Technically yes, but it’s awkward alone. The deck weighs about 85 pounds, and you need to slide it under the tractor while aligning four mounting pins. Most owners use a floor jack or an extra set of hands. Budget 1–2 hours for the swap.

Q: Does this deck come with blades?
A: No. The deck includes spindles, pulleys, and the deck shell, but blades are sold separately. You’ll want John Deere part number GY20907 (OEM blades) or a quality aftermarket set. Don’t reuse old blades—they’re likely dull and may be out of balance.

How It Compares

Quick Verdict

There is no single winner here because these mowers serve completely different purposes—the John Deere is a traditional riding mower deck replacement, while the Gardena is an autonomous robot—so your choice depends entirely on whether you need to repair a tractor or automate a small lawn.

Side-by-Side Comparison

Feature John Deere BUC11055 (Mower A) Gardena SILENO Life (Mower B)
Price $999.99 $979.99
Power Source Gas (tractor-mounted, requires separate riding mower) Battery (rechargeable, built-in)
Cutting Width 42 inches ~8 inches (estimated based on robot design)
Self-Propelled No (it is a deck, not a complete mower) Yes (fully autonomous robot)
Best Yard Size Large (2+ acres, when attached to a tractor) Up to 8,100 sq ft (0.19 acres)
Warranty Not specified (John Deere typically offers 2-3 years on parts) Not specified (Gardena typically offers 2 years)

Where John Deere Wins

  1. Massive cutting width for large properties: At 42 inches, this deck can mow an acre in roughly 30 minutes when paired with a compatible John Deere tractor, making it ideal for estates or commercial use.
  2. Proven durability for heavy-duty work: John Deere’s Original Equipment decks are built with heavy-gauge steel and designed to withstand years of tough mowing, including thick grass, uneven terrain, and occasional debris.
  3. Lower maintenance long-term: Gas-powered tractor mowers require less frequent battery replacement than robots, and replacement parts (belts, blades, spindles) are widely available at John Deere dealers.

Where Gardena Wins

  1. True hands-free automation: This robot mows daily on its own schedule via Bluetooth app, returning to its charging station automatically—no operator effort needed for weeks at a time.
  2. Ultra-quiet operation: At just 58 dB, it is one of the quietest robot mowers in its class, allowing mowing at any hour without disturbing neighbors or violating noise ordinances.
  3. Superior for small, complex lawns: The Gardena handles narrow passages, obstacles, and slopes up to 25% with ease, while a tractor deck would struggle or damage landscaping in tight spaces.

Which Should You Buy?

Buy Mower A (John Deere deck) if: You already own a compatible John Deere riding mower (e.g., X300, X500 series) and need to replace a worn-out or damaged 42-inch deck. This is a repair part, not a standalone mower—it only makes sense for tractor owners.

Buy Mower B (Gardena robot) if: You have a small to medium lawn (up to 8,100 sq ft), want zero physical effort from mowing, and value quiet operation. This is ideal for busy homeowners, elderly users, or anyone who dislikes yard work.

Buy neither if: You are a first-time buyer without a tractor or a very small lawn. For a traditional push mower, consider a $400–$600 gas or electric model; for a medium lawn, a $1,200–$1,500 robot like the Husqvarna Automower might offer better value than Gardena’s lower-rated model.

Quick Verdict

This isn’t a fair fight—these mowers serve completely different purposes. The John Deere wins for traditional, rider-style lawn care with a robust replacement deck, while the Gardena wins for hands-off, automated mowing on small, flat lawns. Choose based on how you want to mow, not which is “better.”

Side-by-Side Comparison

Feature Mower A: John Deere BUC11055 Mower B: Gardena SILENO Minimo
Price $999.99 $848.24
Power Source Gas (deck only, requires tractor) Battery (rechargeable, robotic)
Cutting Width 42 inches ~8 inches (estimated)
Self-Propelled No (requires tractor attachment) Yes (fully autonomous)
Best Yard Size 1–5+ acres (with tractor) Up to 5,400 sq ft (0.12 acres)
Warranty 2 years (parts/labor, typical John Deere) 2 years (limited)

Where John Wins

  1. Massive cutting width for large properties – At 42 inches, this deck can cut a 1-acre lawn in under 30 minutes with a compatible tractor. The Gardena’s ~8-inch cut requires many passes and hours per session, making it impractical for anything beyond a small yard.
  2. Proven durability and parts availability – John Deere’s BUC11055 is an OEM replacement deck built for commercial-grade use. It’s made of heavy-duty steel, and replacement blades, spindles, and belts are widely available at dealers and online. The Gardena is a consumer robot with limited serviceable parts.
  3. No boundary wire or setup hassle – This deck bolts onto an existing tractor. No trenching, no wire laying, no app pairing. For owners of a compatible John Deere rider, it’s a straightforward swap that restores full mowing capability immediately.

Where Gardena Wins

  1. Fully autonomous operation – The SILENO Minimo mows on its own, returning to its charging station when empty. You don’t need to push or ride—just set the schedule via Bluetooth app. Ideal for those who want “set and forget” lawn care.
  2. Quiet and low-maintenance – At 58 decibels (claimed), it’s one of the quietest robotic mowers. No gas, no oil changes, no spark plugs. Just occasional blade swaps and wire checks. The John Deere deck requires a gas tractor, engine maintenance, and noise.
  3. Lower upfront cost and no tractor needed – At $848.24, it’s cheaper than the deck alone (which needs a $2,000+ tractor to work). For small lawns under 5,400 sq ft, the Gardena is a complete solution with no additional equipment required.

Which Should You Buy?

Buy Mower A (John Deere deck) if: You already own a compatible John Deere lawn tractor (e.g., X300, X500 series) and need a durable replacement deck for a medium-to-large yard (1 acre or more). This is a repair/upgrade part, not a standalone mower—perfect for maintaining a traditional mowing setup.

Buy Mower B (Gardena robot) if: You have a small, flat lawn under 5,400 sq ft and want to eliminate manual mowing entirely. Ideal for tech-savvy homeowners who value quiet operation, minimal effort, and low ongoing costs. Be prepared for boundary wire installation and occasional robot rescues from obstacles.

Neither is right if: You need a new, complete gas mower (push or self-propelled) for a medium yard (0.25–0.5 acres). The John Deere deck is just a component, and the Gardena robot is too slow for that size. Consider a standard gas push mower or a zero-turn rider instead.

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Last updated: June 2026