Product Review: Briggs and Stratton Vertical Engine 19 HP 540cc 1″ x 3-5/32″ #33S877-0043
Introduction
If you’re looking to buy a reliable replacement small engine for a riding mower or a heavy-duty walk-behind, the Briggs and Stratton engine family continues to be a top choice. In this review we’ll cover the Briggs and Stratton Vertical Engine 19 HP 540cc 1" x 3-5/32" #33S877-0043, a compact, powerful option for homeowners and light commercial users. Whether you want to buy Briggs and Stratton 19 HP engine or search for a Briggs vertical engine for sale, this overview will help you decide if this model fits your needs.
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What is this product?
The Briggs and Stratton vertical engine model 33S877-0043 is a 19 HP, 540cc single-cylinder vertical shaft engine designed as a common riding mower replacement engine and suitable for various outdoor power equipment. It’s often referred to as a 19hp 540cc vertical engine for lawn mower and is built with durability features like a Dura-Bore cast iron cylinder sleeve and a premium Dual Clean air filtration system.
Key Features
Here are the headline features straight from the manufacturer:
- Cast iron cylinder sleeve and dual element air filter for extended engine life
- Patented linear balancing system provides smoother performance
- 9 amp / electric start only. Includes muffler and maintenance-free Magnetron electronic ignition
- 1″ x 3-5/32″ shaft, tapped 7/16″ with 1/4″ keyway — fits many mower applications
- Common riding mower replacement engine with a manufacturer limited warranty: 2 years consumer / 1 year commercial
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Detailed Description
This genuine 540cc Briggs and Stratton engine delivers dependable power with a 19 horsepower rating. The engine includes a premium Dual Clean air filtration system to protect internal components, an electric starter for convenient starting, and a Magnetron electronic ignition system designed to be maintenance-free.
Important installation note: mounting holes are not threaded. Use the bolts from your old engine — OEMs typically use self-threading bolts during installation. The engine includes an installed muffler and a 9 amp charging system, making it a practical replacement Briggs engine for many mid-size mowers. For those who need a specific fit, this model is often listed as 1 inch x 3-5/32 shaft Briggs vertical engine or compact 19hp Briggs engine with 1 x 3-5/32 shaft.
Pros and Cons
Pros
- Durable construction: Dura-Bore cast iron sleeve extends life compared to aluminum-only designs
- Smooth operation: Patented linear balancing system reduces vibration
- Convenience: Electric start and 9 amp charging system included
- Good filtration: Dual element air filter helps protect engine internals
- Warranty: 2-year consumer warranty gives peace of mind
Cons
- Mounting holes are not threaded — you must reuse existing hardware or source self-threading bolts
- Electric start only; no recoil-only option
- Single cylinder design can be a bit louder than multi-cylinder industrial engines
Who Should Buy This Product
This engine is ideal for:
- Homeowners needing a replacement Briggs engine for a riding mower
- Users who want a Briggs and Stratton vertical shaft engine 19 hp 540cc 1 x 3-5/32 fitment
- Small contractors who need a reliable Briggs and Stratton industrial vertical engine 19 horsepower for light commercial use
- Anyone searching to purchase Briggs 540cc engine or order Briggs and Stratton 33S877-0043 online
Comparison with Similar Products
Compared to other replacement small engines, the Briggs and Stratton 19hp vertical engine stands out for its cast iron sleeve and linear balancing system. Some budget alternatives offer aluminum cylinder sleeves and basic filtration — which may reduce upfront cost but increase wear over time. If you’re weighing options like “new Briggs 19hp engine buy” versus aftermarket copies, consider:
- OEM reliability: Briggs and Stratton engines typically include better parts availability and a clear warranty.
- Fitment specifics: The 1" x 3-5/32" shaft with 7/16" tapped hole and 1/4" keyway is a common spec — confirm yours matches before purchase.
- Charging and start system: This model’s 9 amp charging and electric start are convenient for modern mower electrics.
Frequently Asked Questions
Q: Is this a good replacement for most riding mowers?
A: Yes — for many common older and modern riding mowers this Briggs and Stratton vertical engine will bolt in as a replacement, provided the shaft, mounting pattern, and bolt sizes match. Remember that mounting holes are not threaded.
Q: Where can I buy this engine?
A: You can order this model directly from Amazon or local dealers. Search for “Briggs and Stratton engine near me” or click the link below to view current availability and pricing.
Final Verdict
The Briggs and Stratton Vertical Engine 19 HP 540cc 1" x 3-5/32" #33S877-0043 is a solid choice if you need a dependable, easy-to-install replacement small engine. It strikes a good balance between power, durability, and convenience features like electric start and a 9 amp charging system. For homeowners and light commercial users looking to buy Briggs and Stratton 19 HP engine or compare replacement Briggs engine price, this model is a trustworthy pick.
For more mower guidance, check our in-depth guide: Best Electric Lawn Mowers Review
Note: Always confirm shaft size and mounting compatibility (1" x 3-5/32", tapped 7/16", 1/4" keyway) with your equipment before purchase to ensure a proper fit.