Part Location Diagram of 27803S Briggs and Stratton Engine Breather Gasket
See part B9 in the diagram
( Grid squares measure 1x1 inch )

Engine Breather Gasket 27803S

Manufactured by:
Briggs and Stratton
ERP Number:
ERP8941097
Part Number:
27803S
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!
Minimum Quantity of 2 required

Easy 

1- 2 hours 

(11 rated repairs) ?

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Product Description

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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.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Briggs and Stratton
  • Toro
  • Simplicity
  • Craftsman
  • Murray
This part works with the following products:
  • Engine
  • Lawn Mower
  • Lawn Tractor
  • Generator
  • Snow Blower
Part# 27803S replaces these:
27803, 27803S,

Customer Part Reviews

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Questions & Answers

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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.

Easy 

1- 2 hours 

(11 rated repairs) ?
  • 1
  • 2
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Sorry, we couldn't find any existing installation instruction that matched.

Bad oil leak coming from sump pan

David from Terryville, Connecticut

6 of 6 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
More than 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench set
Parts Used:
692292, 291675S, 27803S
Removed engine from tractor
Watched a few YouTube videos on how to dismantle engine
Unbolted sump pan and pulled apart carefully
Cleaned gasket material off with scraper and sandpaper
Used gasket sealer with gasket to replace old gasket
Reassembled and torqued to 225 inch lbs the bolts in a cross pattern ... Read more />
Gotchas: Be careful of the governor assembly
Oil seal is a challenge to remove
During reassembly turn the crank to line up the governor gear to the cam sprocket
Be sure the timing marks line up between crank and cam gears




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Intake and breather gaskets bad in B&S 11 hp lawn tractor

Gary from Pottstown, Pennsylvania

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Screw drivers
Parts Used:
498869, 27803S
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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Leaking gas and oil and broken spring

Frank from Bennington, Vermont

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Wrench set
Parts Used:
691842, 281165S, 27803S
Replaced parts that was missing or broken.
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Oil leaking from breather .

Lawn from Hollister , California

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set
Parts Used:
27803S
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
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had to do a carburetor job motor had set to long

Marvin from Davis, Oklahoma

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set, Wrench set
Parts Used:
692253, 690618, 270843S, 27803S, 270511
removed carb cleaned and replaced parts and replaced carb runs like a new one
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carburetor leaking gas into crankcase

raymond from rockville, Connecticut

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench set
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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Maintenance work

FRANK from SAN ANTONIO, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set
Parts Used:
691206, 27803S
Maintenance work on MURRAY RIDING LAWN MOWER, gas spitting out from carburetor, cracked breather gasket.
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Leaking oil

Gerry from Round Mountain , California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
More than 2 hours
Tools:
Screw drivers, Socket set
Parts Used:
692287, 27803S
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 from Canova, South Dakota

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Screw drivers
Parts Used:
495755, 27803S
1. Remove air breather.
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 leaked.

Marvin from STATESVILLE, North Carolina

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
692253, 495933, 27803S
replaced carburetor.
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  • 1
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Model Cross Reference

This part works with the following models:
ERP Number: ERP8941097
Manufacturer Part Number: 27803S
Brand Model Number Description
Briggs and Stratton 01149-0 Generator - Briggs & Stratton Generator Model 01149-0 (011490, 01149 0) Parts
Briggs and Stratton 0749-01 Engine - Engine
Briggs and Stratton 08799-1 Generator - Briggs & Stratton Generator Model 08799-1 (087991, 08799 1) Parts
Briggs and Stratton 09085-4 Generator - Briggs & Stratton Generator Model 09085-4 (090854, 09085 4) Parts
Briggs and Stratton 1149-0 Generator - 5,000W 10HP Portable Generator
Craftsman 1149-0-580327112 Generator - 1149-0 - 580.327112, 5,000 Watt Craftsman
Briggs and Stratton 140200-140257 Engine - Gas Engine
Briggs and Stratton 140300 Engine - Engine
Briggs and Stratton 140700-140707 Engine - Gas Engine
Briggs and Stratton 140701-0110-99 Engine - Engine
Briggs and Stratton 140701-0110-XX Engine - Vertical Engine
Briggs and Stratton 140701-0142-99 Engine - Engine
Briggs and Stratton 140701-0142-XX Engine - Vertical Engine
Briggs and Stratton 140701-5010-10 Engine - Engine
Briggs and Stratton 140702-0015-99 Engine - Engine
Briggs and Stratton 140702-0015-XX Engine - Vertical Engine
Briggs and Stratton 140702-0111-99 Engine - Engine
Briggs and Stratton 140702-0111-XX Engine - Vertical Engine
Briggs and Stratton 140702-0116-99 Engine - Engine
Briggs and Stratton 140702-0116-XX Engine - Vertical Engine
Briggs and Stratton 140702-0117-99 Engine - Engine
Briggs and Stratton 140702-0117-XX Engine - Vertical Engine
Briggs and Stratton 140702-0118-99 Engine - Engine
Briggs and Stratton 140702-0118-XX Engine - Vertical Engine
Briggs and Stratton 140702-0125-99 Engine - Engine
Briggs and Stratton 140702-0125-XX Engine - Vertical Engine
Briggs and Stratton 140702-0126-99 Engine - Engine
Briggs and Stratton 140702-0126-XX Engine - Vertical Engine
Briggs and Stratton 140702-0127-99 Engine - Engine
Briggs and Stratton 140702-0127-XX Engine - Vertical Engine