Description
Overview:
The Gasket-Breather (Briggs & Stratton 27803S) is a genuine replacement gasket that seals the breather assembly to the engine crankcase. Made from durable, oil‐resistant gasket material, it helps control crankcase ventilation by allowing gases to vent while keeping oil contained, which supports smooth running and reduces leaks. It is intended for use on a wide range of Briggs & Stratton small engines found on garden and construction machines such as lawn mowers, generators, pressure washers, and compactors. It provides a direct fit on many classic B&S models, including 170457 and 190492, restoring the correct seal after service or when the original gasket has hardened, torn or started to seep.
Key Features:
- Genuine Briggs & Stratton part (27803S) for correct fit and specification
- Oil‐resistant gasket material suited to small engine operating conditions
- Helps prevent oil leaks and misting around the breather cover
- Maintains stable crankcase pressure for consistent performance
- Direct-fit replacement on listed engines with no modifications required
- Quick installation with basic hand tools during routine servicing
- Reliable seal to support engine longevity and reduce mess
- Suitable for trade workshops and DIY maintenance
Typical Applications:
Replacement during breather service or rebuilds, after cleaning or changing the breather reed/valve, or when oil staining appears around the breather cover. Used across lawn and garden equipment, generators, pumps, pressure washers, tillers, and light construction machinery powered by compatible Briggs & Stratton engines.
Also known as:
Breather cover gasket, crankcase breather gasket, engine breather gasket, crankcase vent gasket, ventilation gasket for B&S engines.
Fits Models:
140701, 140702, 140703, 140704, 140707, 141701, 141707, 144202, 144231, 144232, 144252, 144401, 144402, 144411, 144431, 144432, 144451, 145401, 145432, 145451, 146401, 146457, 146701, 146703, 146707, 147702, 150422, 150702, 170400, 170403, 170404, 170405, 170407, 170413, 170431, 170434, 170436, 170437, 170457, 170701, 170703, 170705, 171432, 171457, 176437, 190400, 190417, 190437, 190492, 190706, 190707, 192432, 192436, 193705, 195422, 195431, 195436, 195707, 196412, 196417, 196702, 196706, 220702, 221436, 222413, 222496, 223707, 226432, 226437, 233401, 233432, 233454, 235702, 243417, 243431, 243434, 243436, 243437, 243457, 243705, 243711, 244457, 250412, 251411, 251412, 251415, 251705, 252413, 252707, 253412, 253417, 253703, 253706, 253707, 254416, 254417, 254422, 254426, 254427, 255427, 255707, 256417, 256457, 256705, 257417, 257705, 257707, 284702, 285707, 287776, 300424, 301431, 302432, 302437, 310702, 311777, 313707, 322706, 325437, 326432, 401411, 401437, 401707, 401715, 402417, 402431, 402707, 404437, 421437, 422431
Alternate Part Numbers:
27803S, BS27803S
Product Specifications
| L&S Part No. | BS27803S |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | B27803S |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Key Features | - Genuine Briggs & Stratton part for correct fit - Oil-resistant material prevents leaks - Direct-fit replacement on listed engines - Maintains stable crankcase pressure - Suitable for lawn mowers, generators, and more |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
