BILT HARD 420-cc 15 -HP Multi-purpose Replacement Engine

BILT HARD 420-cc 15 -HP Multi-purpose Replacement Engine

BILT HARD 420cc OHV Gas Engine is built for power, durability, and long-lasting performance. Featuring upgraded engineering and a rugged cast iron cylinder, this engine is designed to withstand heavy wear while delivering maximum torque of 19,56 ft.lbs at 2500 RPM. With a 3.5-in x 2.6-in bore and stroke, 8.2:1 compression ratio, and a max speed of 3600 RPM, it’s perfect for garden tractors, golf cart conversions, airboats, wood chippers, pelletizers, and agricultural equipment. User-friendly controls ensure easy starting, while the low oil sensor protects the engine by automatically shutting down when oil levels are too low. Fully EPA compliant and built with a 1-in shaft diameter and 3.48-in shaft length, this engine is reliable and ready for demanding applications. Not recommended for generator conversion.

Highlights

• 420cc 4-stroke gas engine delivers 15 maximum horsepower and 18,45 ft lbs of torque at 2500 RPM.
• Built with industrial-grade standards, it features a max speed of 3800 RPM and a 1,2-gal fuel tank for reliable power.
• The shaft is 1-in in diameter and 3,48-in long, end tapped 3/8-in 24 UNF, with a 1/4-in keyway and durable mounting pattern.
• Designed for quiet operation, this engine supports Torch F6TC spark plugs with 0,027–0,031-in clearance.
• Forced air cooling and splash lubrication systems ensure safe, extended engine use under tough conditions.
• Low oil shutdown prevents damage, making it ideal for cement mixers, water pumps, tillers, and more.
• EPA-compliant engine includes a 90-day warranty and is a great replacement for GX340, GX390, CH440, MZ360, and similar models.

Specifications