The oil fill plug connects to the o-ring and the oil fill tube and helps to stop oil leaks. This is a genuine replacement part sourced from the original manufacturer for use with Troy-Bilt trimmers. It is made of plastic and is priced individually. No tools should be required to replace this part if it becomes broken.
Troubleshooting
This part works with the following brands:
Troy-Bilt
MTD
This part works with the following products:
Trimmer
Part# 731-08920A-9 replaces these:
731-08920-9, 731-08920A-9,
★
Customer Part Reviews
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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(2 Reviews)
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★★★★★
★★★★★
Better than the original
It’s better than the one that came on it!
Guest - September 3, 2019
Verified Purchase
★★★★★
★★★★★
Great service
Part fit perfect. My weed whacked is back at work.
Guest - August 7, 2025
Verified Purchase
Customer Repair Instructions
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Easy
Less than 15 mins
(2 rated repairs)?
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I loss the oil fill plug, then trimmer won\'t work
1. Remove screws from bottom casing.
2. Remove 2 upper cover screws.
3. Remove screw on oil fill plug.
4. Pull out and replace fill plug.
5. Replace all screws.
Easy!
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Model Cross Reference
This part works with the following models:
ERP Number: ERP19270109
Manufacturer Part Number: 731-08920A-9
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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