Description
Overview:
The Briggs Muffler Starter Motor Side Outlet is a genuine Briggs & Stratton OEM exhaust silencer (OEM No. 843905) for petrol engines used in garden and light construction machinery. Built from robust steel with a durable, heat-resistant coating, it features a compact box design with a single side outlet to route exhaust gases away from the starter motor and machine bodywork. Its internal baffles help reduce exhaust noise and maintain the correct back pressure, supporting smooth running and engine efficiency. Designed for selected Briggs & Stratton engines as specified by the manufacturer, it offers a precise fit and reliable sealing when installed with the correct fasteners and gasket. This is a direct replacement part that helps restore performance on ride-on mowers and similar equipment.
Key Features:
- Genuine Briggs & Stratton OEM part for correct fit and performance (OEM No. 843905)
- Side outlet directs exhaust away from the starter motor and operator area
- Steel construction with high-temperature protective finish for durability and corrosion resistance
- Baffled design to reduce noise while maintaining proper engine back pressure
- Engineered for efficient exhaust flow to support fuel efficiency and throttle response
- Compact rectangular form factor for tidy installation in confined engine bays
- Welded seams for strength under vibration and heat cycles
- Designed to replace worn or rusted mufflers to restore safe exhaust routing
- Compatible with specified Briggs & Stratton engines; follow engine parts list for confirmation
- Straightforward fitting with standard hand tools; use new gaskets/sealants where specified
Typical Applications:
Commonly fitted to Briggs & Stratton-powered ride-on lawn tractors, zero-turn mowers, commercial turf equipment, larger walk-behind machines, and selected industrial units such as generators or pumps. Ideal where a side-outlet exhaust layout is required to clear bodywork, guards, or accessories and to manage heat around the starter motor.
Also known as:
Starter-side outlet muffler, exhaust silencer, side discharge exhaust, engine silencer box, B&S exhaust can, OEM exhaust muffler, side outlet silencer, Briggs side outlet muffler.
Product Specifications
| L&S Part No. | 843905 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | BS843905 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Briggs & Stratton |
| Key Features | - Genuine Briggs & Stratton OEM part (OEM No. 843905) - Steel construction with heat-resistant coating - Side outlet directs exhaust away from starter motor - Baffled design reduces noise and maintains back pressure - Compatible with specified Briggs & Stratton engines |
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