Briggs & Stratton MUF0626 Filter-Side Muffler
The Briggs & Stratton MUF0626 is an above-mount exhaust muffler designed for select Briggs & Stratton vertical-shaft V-Twin engines. The exhaust outlet is positioned on the oil-filter side of the engine, making MUF0626 distinct from the starter-side MUF0626R configuration.
MUF0626 is commonly used with compatible Briggs & Stratton 40-, 44- and 49-series V-Twin engines, including select Intek and Professional Series applications. Exact fitment depends on the complete engine Model, Type and Code as well as available exhaust clearance in the equipment.
Important orientation: MUF0626 exits on the oil-filter side of the engine. If your application requires the exhaust outlet on the starter side, see the Briggs & Stratton MUF0626R Starter-Side Muffler .
Briggs & Stratton MUF0626 Product Details
| MUF0626 Muffler Specifications | |
|---|---|
| Manufacturer | Briggs & Stratton |
| Part Number | MUF0626 |
| Part Type | Vertical V-Twin Engine Muffler / Exhaust Assembly |
| Exhaust Side | Oil-Filter Side |
| Mounting Position | Above Engine Mounting Plane |
| Engine Orientation | Vertical Shaft |
| Common Engine Families | Select Briggs & Stratton 40-, 44- and 49-Series V-Twins |
| Common Series | Intek, ELS and Professional Series applications |
| Vanguard Fitment | Do not assume compatibility; verify the exact engine and exhaust configuration |
What Does "Filter-Side Muffler" Mean?
On a vertical Briggs & Stratton V-Twin, the engine has an oil-filter side and a starter side. MUF0626 routes the exhaust toward the oil-filter side of the engine.
This orientation is important because zero-turn mowers, lawn tractors and other equipment can have limited space around the engine. The muffler must clear the frame, body panels, hydraulic components, battery and other equipment-specific hardware.
MUF0626 vs. MUF0626R
| Part Number | Exhaust Orientation |
|---|---|
| MUF0626 | Oil-Filter-Side Exhaust |
| MUF0626R | Starter-Side Exhaust |
These mufflers are designed around opposite outlet orientations. Choose the configuration that matches the equipment layout rather than assuming either muffler will fit because the engine model is compatible.
What Engines Fit Briggs & Stratton MUF0626?
MUF0626 is commonly listed for select vertical Briggs & Stratton V-Twin engines in the 40xxxx, 44xxxx and 49xxxx engine families.
Documented examples and compatible applications include engines such as:
- 44T877-0001-G1
- 49T877-0004-G1
- Compatible 40-series vertical V-Twin configurations
- Compatible 44-series vertical V-Twin configurations
- Compatible 49-series vertical V-Twin configurations
Current 49T877 applications are also documented as using MUF0626 when an oil-filter-side exhaust is required.
This is not universal fitment for every 40-, 44- or 49-series engine. Engine compatibility and physical equipment clearance should both be checked before ordering.
Installation Parts Commonly Required
MUF0626 installations commonly use the following Briggs & Stratton exhaust hardware. These parts should be considered separate unless explicitly included with the muffler being sold.
| Part | Typical Quantity | Description |
|---|---|---|
| 690970 | 2 | Briggs & Stratton Exhaust Gaskets |
| 690341 | 4 | Exhaust Manifold Screws |
| 690297 | 1 | Muffler Bracket Screw |
Verify the hardware required for your exact engine and equipment before installation, as production revisions and equipment mounting arrangements can differ.
Briggs & Stratton 690970 Exhaust Gaskets
Many MUF0626 installations use two Briggs & Stratton 690970 exhaust gaskets, one at each cylinder-head exhaust connection.
If your existing exhaust gaskets are crushed, burned or damaged, replacing them during muffler installation helps provide the proper exhaust seal.
Carroll Stream also carries the Genuine Briggs & Stratton Exhaust Gasket 690970 .
Above-Mount Muffler Configuration
MUF0626 is designed so the muffler body and exhaust routing remain above the engine mounting plane on compatible vertical-shaft engine installations.
This is particularly relevant on zero-turn mowers and other equipment where exhaust components cannot extend below the engine mounting base. Always verify available space in the equipment before installation.
How to Confirm MUF0626 Fitment
Start with the complete Briggs & Stratton Model, Type and Code from the engine identification label.
Then confirm:
- The engine is a compatible vertical-shaft V-Twin.
- The application requires an oil-filter-side exhaust outlet.
- The muffler can remain above the equipment mounting plane.
- There is adequate clearance around the frame and surrounding components.
- The required exhaust gaskets and mounting hardware are available.
Need help confirming fitment? Contact Carroll Stream Motor Company at 1-888-208-2088 with your complete Briggs & Stratton engine Model, Type and Code and your equipment information.
Briggs & Stratton MUF0626 FAQs
What is Briggs & Stratton MUF0626?
MUF0626 is an above-mount muffler for select Briggs & Stratton vertical V-Twin engines. Its exhaust outlet is positioned on the oil-filter side of the engine.
Which side does MUF0626 exhaust from?
MUF0626 exits on the oil-filter side of the engine.
What is the difference between MUF0626 and MUF0626R?
MUF0626 is the oil-filter-side configuration. MUF0626R is the starter-side configuration.
Does MUF0626 fit Briggs & Stratton 44T877 engines?
MUF0626 is compatible with select 44T877 applications, including documented 44T877-0001-G1 fitment. Confirm the complete Type and Code and equipment clearance before ordering.
Does MUF0626 fit Briggs & Stratton 49T877 engines?
Yes, MUF0626 is used on select 49T877 vertical V-Twin engines when the equipment requires an oil-filter-side exhaust outlet. Verify the exact engine and equipment application.
Does MUF0626 fit every Briggs 40-, 44- or 49-series engine?
No. MUF0626 is compatible with select engine and equipment configurations. Model, Type, Code and physical exhaust clearance should all be checked.
Does MUF0626 fit Vanguard engines?
Do not assume Vanguard compatibility. Briggs has used different muffler assemblies across Vanguard and other V-Twin configurations. Verify the exact engine and exhaust application before ordering.
Are exhaust gaskets included with MUF0626?
Do not assume installation gaskets or hardware are included unless the current product package specifically states that they are. MUF0626 installations commonly require two 690970 exhaust gaskets.
What exhaust gasket is commonly used with MUF0626?
Compatible installations commonly use Briggs & Stratton 690970 exhaust gaskets, typically one at each cylinder exhaust connection.
How do I know whether MUF0626 will fit my mower?
Verify the Briggs & Stratton engine Model, Type and Code, confirm that the equipment requires an oil-filter-side exhaust, and measure available space around the engine before ordering.
