Important: To find out if it works in your engine please note photo #2 (flange measurements Mounting holes 1.50" center to center)

Please see photos for all details!

The thread is 3/4 common male pipe thread, 3/4 does not represent the measurement of the inside or outside of the thread, it is measured by TPI read at the end so that you understand how the threads are read.

Type of material: The Thread in Stainless Steel welded to the exhaust flange which is mild steel.
-Comes with stainless steel hardware, Gasket... these screws will work on some models not all.

-It does not work with...Tecumseh 5hp model HS50.

Remember this is not a Muffler, is loud!!!

*Free shipping USPS 1-4 business days. ON U.S.A.
*INTERNATIONAL CAN TAKE 30 DAYS!

Made in U.S.A.

Finding the Correct Pipe Thread Size

National Pipe Threads (NPT)

Pipe sizes do refer to physical dimensions, but the plumbing industry standard for the sizes of pipe is not always as straight-forward as measuring the pipe. Measuring the pipe will oftentimes mislead you into choosing the wrong pipe, so do take care. The "pipe thread size" as shown in column 3 of the table below is measured and based on the inside of the pipe. But, to actually determine the size of a pipe, the outside diameter of each pipe or fitting must be measured and compared to the table for size identification. For example, a 3/4" NPT pipe thread has an outside diameter of 1.050 inches. Each thread size has a defined number of threads per inch (TPI). The 3/4" NPT pipe thread has 14 threads per inch. Both the TPI (threads per inch) and OD (outside diameter) of the thread are required for positive identification of thread size because several sizes have the same TPI.

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