Easy
30-60 minutes
This is a high-quality manufacturer-sourced part which is made for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. It helps to distribute the pressure evenly and provide a tight seal for the breather. Over time it may become brittle and begin to crack eventually requiring a replacement. For the proper application please refer to the appropriate diagrams of your model. This high-quality part is made of durable composite material and is sold individually. You will need a screwdriver and a wrench set to remove and reattach the breather.
Gasket-breather 27803S
OEM part for: Briggs and Stratton
Part Number: 27803S
$4.99
In Stock
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Compatibility
This Gasket-breather will fit the following 18516 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Briggs and Stratton
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
This part replaces obsolete part #: 49-112, 27803
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Got everything I needed fast on time excellent quality.
gaskets ,screws worked out fine
Guest -
April 5, 2024
Verified Purchase
Great timing and price
Very. Good .fast shipping great price
Guest -
August 13, 2021
Verified Purchase
Good
Great company
Anonymous -
June 29, 2021
Verified Purchase
Parts for old mowers
When you need the part EReplacement has it and you don't have to burn gas to go hunt the parts.
Guest -
June 4, 2019
Verified Purchase
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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.
Oil leaking from breather .
Lawn - April 16, 2020
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, 8 in extension
Parts Used
When engine was cool , removed the air cleaner , to allow ease of access to breather covers .
Removed 2 small screws from each breather .
Removed breather assembly,
Cleaned all mating surfaces .
Place new gaskets onto the breather assembly .
Aligned new gasket with screw holes and tighten .
Replace air cleaner assembly,check oil level and add if needed
Removed 2 small screws from each breather .
Removed breather assembly,
Cleaned all mating surfaces .
Place new gaskets onto the breather assembly .
Aligned new gasket with screw holes and tighten .
Replace air cleaner assembly,check oil level and add if needed
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Intake and breather gaskets bad in B&S 11 hp lawn tractor
Gary - November 10, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Nutdriver
Parts Used
Stem of intake valve chewed up, and would no longer hold valve spring retainer for any length of time. After replacement and reassembley, the intake gasket was found to be broken, and breather gasket was also leaking oil. I had to order the gaskets. When they arrived, installation was easy.Two bolts through the intake and gasket, attached the assembly to the block using a screwdriver. The breather gasket was even easier, scraping off the old breather gasket with a razor blade, and replacing with the new gasket. A 5/16 nutdriver tightened the two holding screws for the breather cover, and that was it. All done!
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had to do a carburetor job motor had set to long
Marvin - November 17, 2022
Tool Type
Engine
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
removed carb cleaned and replaced parts and replaced carb runs like a new one
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Maintenance work
FRANK - July 7, 2022
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set
Maintenance work on MURRAY RIDING LAWN MOWER, gas spitting out from carburetor, cracked breather gasket.
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carburetor leaked.
Marvin - March 31, 2021
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Socket set
replaced carburetor.
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Leaking oil
Gerry - November 4, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Socket set, Scraper for old gasket
Motor must be removed from frame, turned upside down to remove sump pan, clean parts and replace gasket, then remove crankcase cover, four bolts, clean all surfaces and replace gasket, breather gasket is very easy, two bolts.
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breather assembly was bad
Glenda - April 3, 2020
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Nutdriver
1. Remove air breather.
2. Remove intake manifold.
3. Remove breather assembly.
4. Install breather assembly, intake manifold, and air breather in that order.
2. Remove intake manifold.
3. Remove breather assembly.
4. Install breather assembly, intake manifold, and air breather in that order.
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carburetor leaking gas into crankcase
raymond - December 29, 2019
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, tap to remove seat in carb
remove carburetor and float bowl and float and needle valve tap inside of seat in carburetor with a 1/4 twenty tap then threaded bolt in and then pulled out old seat and then tapped in new seat with a punch until it hits home at bottom reassemble carburetor and put back on engine
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Seized, oil leak, no compression
Dylan - August 6, 2018
Tool Type
Lawn Tractor
Difficulty
Medium
Time
1-2 hours
Tools Used
Socket set, Ring compressor, rubber mallet
1. Took off most parts (carb, starter, exhaust,ext)
2. Found socket to fit the flywheel nut and a breaker bar and worked to unseize it
3. Once I unseized it I found no compression from bad rings
4. I found the manual for my model engine to find the part number and bought the parts
5. Took the crank case cover off and took the piston out
6. Put the new pistons rings on and clocked them
7. Oiled the piston and ring compressor, squeezed the rings and made sure the compressor was flush with the head and tapped the piston in
8. Scrapped the old gaskets off and replaced them
9. Put the other parts back on, put new oil in and changed the battery
2. Found socket to fit the flywheel nut and a breaker bar and worked to unseize it
3. Once I unseized it I found no compression from bad rings
4. I found the manual for my model engine to find the part number and bought the parts
5. Took the crank case cover off and took the piston out
6. Put the new pistons rings on and clocked them
7. Oiled the piston and ring compressor, squeezed the rings and made sure the compressor was flush with the head and tapped the piston in
8. Scrapped the old gaskets off and replaced them
9. Put the other parts back on, put new oil in and changed the battery
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Leaking gas and oil and broken spring
Frank - October 31, 2016
Tool Type
Lawn Tractor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set
Replaced parts that was missing or broken.
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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.
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