King Tech Power Tools Petrol Motor Engine

KingTech 18HP Vertical Shaft Engine

SKU: PTROLMTR55
4.6★ store rating

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was  $874.80 Sale price$648.00 Save $226.80

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42.0 kg
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Description

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 & 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 & Stratton or Honda setups.
  • Low-vibration balance reduces wear on mower frames and belts.
  • 12-month manufacturer warranty backed by KingTech reliability.

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.

Why Choose KingTech

The KingTech 18HP Vertical Shaft Engine isn’t a gimmick — it’s a proper workhorse built for real-world mowing. From weekend yard warriors to small-block operators, this motor drops in easy and runs hard without fuss. The OHV design keeps fuel use low and torque high, while the cast-iron bore handles heat and stress like a champ. Whether you’re replacing a tired Briggs or reviving an old Honda setup, KingTech’s direct-fit layout saves you time and tools. It’s tough, straightforward, and backed by a 12-month warranty — exactly what you’d expect from a brand that builds for Aussie conditions. Power your mower with confidence.

Precision. Power. KingTech.

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Customer Reviews

Based on 32 reviews
84%
(27)
13%
(4)
3%
(1)
0%
(0)
0%
(0)
W
Whylie
Strong performer

Slight vibration on startup but settles quickly. Solid engine for the money.

J
Jeremy
Reliable replacement

Bolted straight onto my mower with no modifications. Starts instantly and runs super smooth. Mowed a full paddock without missing a beat.

G
Gerorge
Works fine but a bit noisy

Solid power output and starts well, but the noise level is higher than I expected at full throttle. Performance-wise its solid, just wish it ran a little quieter. Still a good buy overall.

O
Oliver
Superb product

The engine is powerful and starts smoothly every time. Absolutely a superb product.

A
Angelo
Great engine for heavy mowing

I use my ride-on on a few acres and this engine has been a beast. Loads of torque, reliable start every time, and no vibration issues. The electric start is flawless too.

King Tech Power Tools

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Product typePetrol Motor Engine
Options One configuration
Availability Available
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