Easy
15-30 minutes
This authentic OEM replacement part fits a variety of Toro and Briggs & Stratton engines. An O ring is used to retain pressure between rigid parts. Its flexible material allows it to create a tight seal. Many different sizes of O ring are used in these engines; consult manual to be sure of correct placement. Sold individually.
Seal-o Ring 270344S
OEM part for: Briggs and Stratton, Toro, Lawn Boy, Craftsman
Part Number: 270344S
$3.99
In Stock
Ships within 1 business day 
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Compatibility
This Seal-o Ring will fit the following 18798 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Briggs and Stratton
Toro
Lawn Boy
Craftsman
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
- Lawn Mower Parts
This part replaces obsolete part #: 270344
Customer Part Reviews ?
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Sputtering mower
Small but critical part . Original Briggs packaging and my order was shipped fast.
Guest -
October 9, 2022
Verified Purchase
Genuine OEM parts for my lawnmower
I ordered three carburetor parts for my 11 year old Craftsman lawn mower with a Briggs & Stratton engine. The parts eReplacementparts sent me were OEM Briggs & Stratton parts and an exact match to what I needed. Problem fixed!
Guest -
September 28, 2021
Verified Purchase
Runs like new again.
The parts I requested all showed up and were as good as I had hoped they would be. Now the more runs like it's new again.
Dale -
June 15, 2021
Verified Purchase
Easy repair
exact part...quick shipping
Guest -
April 25, 2019
Verified Purchase
Exact part, but also came with new carburetor.
If you need this seal and are buying a new carburetor, it comes with one. So now I have an extra one.
Derek -
August 10, 2020
Verified Purchase
Questions & Answers ?
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Does this fit my product?Questions & Answers for Seal-o Ring
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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.
1968 Briggs & Stratton emitted black smoke and would not draw fuel below 1/2 tank.
willard - November 20, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Engine
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Removed fuel tank / carb assy, then separated carb from tank. Replaced diaphragm, and both fuel tubes. Also diaphragm spring. Engine now starts and runs well. Draws fuel all the way to the bottom of the tank until empty.
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O ring was leaking
Michael - September 7, 2021
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Pick tool
Parts Used
Pulled of the breather and replaced the old O ring
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Motor would only run a few seconds then stall
ROBERT - January 4, 2021
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set
Followed instructions that came with parts.
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OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
