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How Do I Find My Direct Engine Replacement Specifications?

Briggs FAQ Support : Updated on January 29, 2026

Replacement Engines

How Do I Find My Direct Engine Replacement Specifications?

There are many variables that come into play when replacing an existing engine with a new one (shaft extension, mounting base, overall fit, etc.). To ensure you’re replacing your engine correctly, make sure to read our guide below with relevant catalogs to find the right engine replacement specifications.

PLEASE NOTE: The engines listed in our catalogs are meant to fit a wide variety of equipment and may NOT necessarily be the exact engine you have currently on your equipment or the replacement engine that you are planning on purchasing. However, comparing an engine our catalogs to one with a similar horsepower and engine name will provide a general idea of the engine specifications.

To determine your direct engine replacement specifications, find resources below or jump down to the most relevant section:

What is the direct replacement for my engine?
What are the specifications for my vertical shaft replacement engine?
What are the specifications for my horizontal shaft replacement engine?
What are the specifications for my liquid cooled replacement engine?
Where can I find engine replacement assistance?

What is the direct replacement for my engine?

Direct Engine Replacement Specifications by Briggs and Stratton

Information regarding your direct engine replacement is available in our Replacement Engine Catalog (MS-5568). Our engine replacement catalog shows all of the service replacement engines and provides the measurements of the engines, specification information, mounting pattern and other valuable dimensions, numbers, etc. This catalog contains only our most commonly used "multi-purpose" engines.

Note: Engine mounting hardware is NOT included with new replacement engines. If replacing an engine on an existing application, reusing the current mounting hardware is recommended. If the engine is to be installed on a new application, self-tapping mounting bolts are generally needed as engine mounting holes are blank.

For additional information regarding mounting bolts and torque values, please review our Engine Mounting Hardware PDF.

What are the specifications for my vertical shaft replacement engines?

Service replacement engine specifications for our vertical shaft models are available through the links below. These PDF files for vertical shaft replacement engines provide the measurements of the engine, specification information, and other valuable dimensions, numbers, etc. that will assist you in seeking a replacement engine.

If you have more questions or need help determining your replacement engines, check out our engine replacement assistance section below.

Find your engine specifications for your vertical shaft models here:

Note: Remember that engine mounting hardware is NOT included with new replacement engines. For information regarding mounting bolts and torque values, please review our Engine Mounting Hardware PDF.

What are the specifications for my horizontal shaft replacement engines?

Find your replacement engine specifications for your horizontal shaft models here:

What are the specifications for my liquid cooled replacement engines?

Specifications for our liquid cooled engine models are available by clicking the links below.

Engine Replacement Assistance

Engines are available for online purchase through Parts Nationwide, but if you are unsure which replacement engine can be used for your equipment, or would like to know if you can upgrade your existing engine, please feel free to ask questions by contacting Briggs & Stratton customer service.

Information Needed for Engine Replacement Assistance:

In order to properly assist you with locating a replacement engine and short block, make sure to include as much engine specifications as you can below:

If replacing a Briggs & Stratton manufactured engine, please provide the engine's complete, STAMPED Engine Model, Type, and Code numbers.
If not a Briggs & Stratton manufactured engine, please provide the engine brand, power rating, and model number. (ex. Tecumseh 10 HP Model HMSK 22-22222d).
Equipment information including brand name, type and model numbers (ex. John Deere Model 316 lawn tractor).

If you need to modify the engine’s existing electrical system to match a replacement engine, please view our Electrical schematic/wiring diagrams FAQ.

Contact Your Local Briggs & Stratton Dealer

Since we do not sell factory direct, and cannot know for certain if any of the above engines will fit or need modifications without examining the equipment, we suggest locating and consulting a Briggs & Stratton Authorized Dealer near you via our website or by calling (800) 444-7774.