Lower Bagger Chute Compatible with 42" 46" Leaf Collection System, 42" 46" RZT Bagger, 42" 46" Double Bagger, Twin Rear Bagger Replace NO. 731-09173A、731-09329A

What It Is

This is the lower bagger chute—the rigid plastic duct that connects your mower deck’s discharge opening to the bagger assembly. It directs clippings from the cutting deck into the collection bags. Designed for 42" and 46" deck tractors with twin rear baggers or leaf collection systems, it’s a direct replacement for worn, cracked, or missing chutes.

Fitment & Compatibility

Deck size: Only fits 42" and 46" decks. Measure your deck width—if it’s 38" or 54", this will not work.
Brand/model fit: Works with most Cub Cadet, MTD, Troy-Bilt, and Craftsman models that use OEM part numbers 731-09173A or 731-09329A. Check your owner’s manual or existing chute for a stamped part number.
OEM vs aftermarket: This is an aftermarket replacement. It matches OEM dimensions but may have slight color or texture differences. Not compatible with zero-turn mowers (RZT) unless your specific model uses these part numbers—verify before buying.
Critical measurement: Measure the chute opening width and the mounting bolt pattern on your deck. Common width is about 8–9 inches. If your deck has a different discharge shape, it won’t seal properly.

Key Things to Know

• Quality: Plastic is sturdy but not as thick as OEM. Some users report slight flex under heavy wet grass. Fine for dry clippings.
• Installation: Straightforward—remove two bolts, swap chute, reattach. No special tools needed. Allow 15–20 minutes.
• Common gotcha: The chute-to-bagger hose connection may be a tight fit. Use a heat gun or warm water to soften the rubber boot if needed.
• Fitment variance: A few users noted the mounting holes don’t align perfectly on older decks. You may need to drill or file 1/8" to get a snug fit.

Should You Buy It

Buy this if you have a 42" or 46" deck tractor with a twin rear bagger and your OEM chute is broken or missing. It’s a budget-friendly fix that works well for typical residential mowing. Avoid if you have a zero-turn or a deck with an unusual discharge shape—measure first to avoid returns.