18HP Vertical Shaft Lawn Mower Engine Petrol Motor 4 Stroke OHV Ride On V379-PTROLMTR55
When your mower’s heart gives out, drop in the KingTech 18HP Vertical Shaft Engine and bring it back to life. This 550cc 4-stroke OHV petrol motor packs serious grunt with smooth, dependable power that gets the job done every time. Built for ride-on mowers, this motor slots in where most Briggs and Stratton or Honda mounts sit — no fuss, just fit and fire. Designed for Aussie yards and conditions, it’s got the torque to cut thick grass and the reliability to run season after season. If you want a straight-talking upgrade that just works, KingTech’s got your back.
Key Features
- 18 Horsepower output delivers strong, steady performance for ride-on mowers.
- 550 cc 4-stroke OHV engine for efficient combustion and low fuel burn.
- Vertical shaft design ideal for mower decks and garden tractors.
- Electric start system with electronic ignition for quick, reliable starts.
- Cast-iron cylinder bore adds durability and long engine life.
- 1” (25.4 mm) output shaft with keyway for secure PTO connection.
- 8.7:1 compression ratio for balanced power and smooth operation.
- Mechanical governor maintains consistent engine speed under load.
- Transistorized magneto ignition for clean, spark-steady performance.
- Universal bolt pattern fits many Briggs and Stratton or Honda setups.
- Low-vibration balance reduces wear on mower frames and belts.
Specifications
| Engine type | 4-stroke, single-cylinder OHV petrol engine |
| Displacement | 550 cc |
| Bore × Stroke | 94.5 mm × 78 mm |
| Compression ratio | 8.7 : 1 |
| Rated output | 13.2 kW @ 3600 rpm (18 HP) |
| Max torque | 39.5 Nm @ 2500 rpm |
| Shaft type | Vertical, 25.4 mm (1”) keyway |
| Rotation | Counter-clockwise (PTO view) |
| Starting system | Electric start |
| Ignition | Transistorized magneto |
| Governor system | Centrifugal mechanical |
| Oil capacity | 1.5 L |
| Weight | 41 kg |
Installation Bolt Details
• Mounting interface includes 3 through holes of Ø 8.8 mm and 1 blind hole of Ø 8.8 mm for secure attachment.
• Bolts for the solenoid valve are not required for installation.
For returns due to change of mind, a 20% restocking fee will be applied.
Note: We don't use postage calculator but we offer a flat rate postage.
Free shipping is for the capital cities CBD area only (10 kilometers form the CBD) excluding Perth, Darwin, Hobart and ACT. If your post code is not in CBD area, you can still place the order but our support team will contact you for the delivery cost which could be between $20 to $25 maximum for post codes near a capital city, $25 to $45 maximum for TAS and WA metro. Bulky items will attract extra cost. You can then decide to pay for the postage or cancel the order. You can contact us for NT, WA regional and remote/outback/rural areas for the postage quote. Postage to New Zealand is not included.