The Briggs & Stratton 13.5hp 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.

Typical Applications :- 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 8.0 - 13Hp models.


  • Automotive Style Dipstick
  • Briggs Model 31R577
  • Electric Start 
  • Super Quiet Muffler 
  • Rewind Starter Also included (not shown in picture)
  • Heavy Duty Sleeve Bearings
  • Over Head Valve Engine (OHV)
  • Electronic Ignition
  • 1 inch Diameter / 3.5/32' Long Keyway Shaft
  • 500cc / Vertical Shaft
  • 479 (mm) x393 (mm) x 327 (mm) (LxWxH)
  • 2 Year Warranty - Australia Wide

Customer Questions

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Q: Can the 13.5hp Briggs and Stratton come with a fuel tank?

A: The Briggs 13.5HP Intek Series engine does not come with a fuel tank option. You can only get the fuel tank on the 11.5HP model.