Briggs & Stratton 15.5HP Intek Lawn Mower Engine. The Briggs & Stratton powerful Intek Series delivers unmatched reliability along with superior performance and durability. The new Intek series engines were designed to be best in its class combining power, performance, features and size. These engines offer consumers and professionals commercial grade features including easy starting, quieter operation, longer life. This Briggs & Stratton Intek series engine is a ideal replacement engine for most ride on mowers on the market. It is a ideal replacement for all previous Briggs & Stratton 11 – 15Hp models. Automotive Style Dipstick. Super Quiet Muffler. Heavy Duty Sleeve Bearings. Over Head Valve Engine (OHV). 1 inch Diameter / 3.5/32′ Long Keyway Shaft. 500cc / Vertical Shaft. 18.9 (in) x 15.5 (in) x 12.9 (in) (LxWxH). The item “New Briggs & Stratton 15.5HP Ride On Mower Engine new” is in sale since Thursday, October 4, 2018. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawn Mowers\Lawn Mower Parts & Accessories”. The seller is “rymilo” and is located in Denton, Texas. This item can be shipped worldwide.