Replacmentparts 40 inch SmartLink Plug Aerator Compatible with 45-0518 Tow Behind Lawn Plug Aerator Pull Behind Lawn Garden Tractors 45-0474 Black

What It Is

This is a replacement 40-inch SmartLink plug aerator attachment designed to fit the Replacmentparts 45-0518 and 45-0474 tow-behind lawn aerators. It’s used for pulling soil cores to relieve compaction on medium-to-large lawns when pulled behind a lawn tractor or garden tractor.

Fitment & Compatibility

• Exact model match: Compatible only with Replacmentparts models 45-0518 and 45-0474. It will NOT fit other brands or universal aerator frames.
• Deck size: The aerator itself is 40 inches wide—measure your tractor’s hitch height and clearance. It works best with tractors that have a standard 1-7/8-inch or 2-inch hitch ball.
• SmartLink system: The “SmartLink” refers to the plug-in tine design—tines lock into the frame without tools. Verify your existing frame uses this same quick-attach system (not bolt-on tines).
• OEM vs aftermarket: This is a direct replacement part from Replacmentparts, not a universal or third-party adapter. If your original tine bar is damaged or worn, this is the exact match.

Key Things to Know

• Quality: Solid build for the price, but the 4.0 rating (2 reviews) means limited feedback. Expect decent durability for light-to-moderate use—heavy clay soil may wear tines faster.
• Installation: Takes about 10–15 minutes. No tools needed for the SmartLink tines—just press them into the bar. You’ll need a wrench to attach the aerator to your tractor’s hitch.
• Common gotcha: Check that your existing frame’s tine slots are clean and free of rust. Old dirt can prevent the SmartLink plugs from seating fully.
• Weight: The aerator is relatively light (~30 lbs), so it won’t penetrate hard soil well without added weight. Consider adding water or sand to the frame if available.

Should You Buy It

Buy this if you already own a 45-0518 or 45-0474 tow-behind aerator and need to replace a worn or broken tine bar. It’s a straightforward, affordable fix for light-to-medium duty aeration. Skip it if you need a complete aerator or your frame is from a different brand—fitment is model-specific.