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Briggs & Stratton 44S977-0032-G1 724cc, 25 Gross HP V-Twin OHV Engine




FREE SHIPPING - Briggs & Stratton 44S977-0032-G1 Vertical Engine Replaces 44S877-0002-G1 and 44Q777-3137-G5, 724 cc 25.0 Gross HP, 1 inch x 3-5/32 inch Crankshaft, 12V Electric Start with 16A Alternator, No Muffler.

Note - This engine has a 1" diameter crankshaft.  Model 44S877-0001-G1 has a 1-1/8" diameter shaft. Please call us with your current engine model and type number and we will make sure you get the correct one.


If the product you need is out of stock, please call for availability. Our inventory is updated on a daily basis.

  • Briggs & Stratton 44S977-0032-G1 vertical Professional Series engine is 724cc and puts out 25.0 gross HP. This Briggs & Stratton V-Twin has a 1" x 3-5/32" crankshaft. The engine has a 12V electric start with a 16A alternator. A muffler is not included with this engine but is available for sale on our website. The 44S977-0032-G1 replaces model 44S877-0002-G1 and 44Q777-3137-G5.Briggs & Stratton Professional Series engines deliver the reliable, efficient power needed for riding lawn mowers and tractors. Buyer protection package provides a two-year limited consumer warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.