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Kiam KM3700PR Petrol High Pressure Washer Jet Cleaner - Gearbox Version (14HP)

Kiam 14 HP petrol pressure washer with gearbox pump

Kiam KM3700PR Petrol High Pressure Washer Jet Cleaner - Gearbox Version (14HP)

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£1,075.00Save £100.00

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Kiam KM3700PR Petrol High Pressure Washer Jet Cleaner - Gearbox Version (14HP) Kiam KM3700PR Petrol High Pressure Washer Jet Cleaner - Gearbox Version (14HP) £1,075.00

Recommended with this

GEARBOX BRASS PUMP • TANK-FEED READY

  • 3700 PSI (255 bar) maximum pressure
  • 15 litres per minute
  • 14 HP Loncin 4-stroke petrol engine
  • Gearbox-driven brass pump
  • German Parker seals and thermal relief valve
  • Tank-feed ready with suction hose and filter
  • 5 quick-release nozzles
  • Low-oil shutdown protects the engine
Read the full description

Full Description

KIAM® Logo

GEARBOX BRASS PUMP • TANK-FEED READY

KM3700PR, 15 LPM Petrol Pressure Washer

14 HP Loncin 4-stroke with gearbox-driven brass pump, German Parker seals & TRV, built for daily pro use.

MAX PRESSURE

3700 PSI (255 bar)

FLOW RATE

15 LPM

ENGINE POWER

14 HP Loncin

Tank-Feed Ready

Draw from tanks/butts/mains with suction hose & filter.

Built to Last

Gearbox-driven brass pump + Parker seals + TRV.

Quick-Swap Control

5 quick-release nozzles for instant mode changes.

Why Professionals Choose the KM3700PR

  • Gearbox drive reduces pump RPM for cooler, longer life.
  • German Parker seals for superior sealing & durability.
  • Thermal Relief Valve protects pump against heat build-up.
  • Low-pressure detergent mode for chemical application.

Working pressure appears in the technical specs for consistency.

Feeding from a tank? Our guide: Tank/Butt Feeding

Use-Case Intensity

Light wash Domestic patios Driveways Heavy rinse

Trade & Site Work

Durable setup for daily jobs.

Fleets & Plant

Cut downtime with fast rinsing.

Chem Rinse

Perfect after downstreaming.

Key Features

  • Gearbox-driven brass pump for longevity & smoother operation.
  • Low-oil shutdown protects the engine automatically.
  • Includes 10 m HP hose, pro trigger gun & steel lance.
  • 5 quick-release nozzles: 0°, 15°, 25°, 40°, soap.
  • Detergent pickup via low-pressure nozzle.
  • Tank-feed ready: suction hose + inline filter included.

In the Box

  • KM3700PR petrol pressure washer unit
  • 10 m high-pressure hose & detergent pipe
  • Professional trigger gun & steel lance
  • 5 × quick-release steel spray nozzles
  • Water suction hose with inline filtration
  • Tool kit & user manual

Technical Specifications

Feature Details
Model KIAM KM3700PR
Max Pressure 3700 PSI / 255 bar
Working Pressure 3400 PSI / 234 bar
Rated Flow 15 L/min
Pump Gearbox-driven brass pump with TRV & German Parker seals
Engine 14 HP Loncin OHV 4-stroke (air-cooled)
Engine Speed 3400 rpm
Fuel Type Unleaded petrol
Displacement 420 cc
Max Torque 26.5 N·m
Dimensions (L×W×H) 79 × 50 × 60 cm
Weight 68 kg

More info & manuals: Instruction Manuals

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Pro-grade pressure with gearbox longevity, Choose the KM3700PR for your next serious clean.

Tracked UK delivery, price shown at checkout.Delivery details

Delivery and collection

Full Delivery Information

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Key features

  • 3700 PSI
  • 15 L/min
  • 14 HP Petrol
  • Gearbox Pump
  • Tank-Feed Ready

The Drivers HQ

Expert Notes

The Kiam KM3700PR is a petrol pressure washer built for daily professional use. A 14 HP Loncin 4-stroke engine drives a brass pump through a gearbox, which lowers pump speed for cooler running and a longer life, and German Parker seals and a thermal relief valve protect it further. It gives up to 3700 PSI (255 bar) at 15 litres per minute, with 3400 PSI working pressure. It is tank-feed ready with a suction hose and inline filter, and comes with a 10 m hose, trigger gun, steel lance and 5 quick-release nozzles, including a soap nozzle for low-pressure detergent. Low-oil shutdown protects the engine. It weighs 68 kg.

Perfect For / Suitable Surfaces

  • Driveways
  • Patios
  • Site work
  • Fleet vehicles
  • Plant machinery
  • Rinsing after chemical application

Caution: Never point the jet at people, animals or the machine, run the engine only outdoors, and let it cool before refuelling.

Technical Specifications

Product Type
Petrol Pressure Washer
Brand
Kiam Power Products
Model
KM3700PR
Max Pressure
3700 PSI / 255 Bar
Working Pressure
3400 PSI / 234 Bar
Flow
15 L/min
Engine
14 HP Loncin OHV 4-Stroke, Air-Cooled, 420 cc
Fuel
Unleaded Petrol
Pump
Gearbox-Driven Brass Pump, TRV, German Parker Seals
Nozzles
0°, 15°, 25°, 40° And Soap
Dimensions
79 x 50 x 60 cm
Weight
68 kg

How To Use

Before starting

  1. Check the engine oil level, as low oil stops the engine.
  2. Fill up with unleaded petrol.
  3. Connect the 10 m hose, trigger gun and steel lance.
  4. Connect the water supply, or the suction hose and inline filter if feeding from a tank.
  5. Squeeze the trigger to purge air before starting.

Cleaning

  1. Start with the widest 40° nozzle.
  2. Move to 25° or 15° for tougher dirt.
  3. Use the soap nozzle for low-pressure detergent.
  4. Rinse with the 40° nozzle after applying chemicals.
  5. Release the pressure before swapping nozzles.

Top Tip: The gearbox drive lowers the pump speed, which keeps it cooler and gives it a longer life.

Performance Benefits

  • Built for daily pro use
  • Cooler, longer pump life
  • Quick nozzle changes
  • Low-pressure detergent mode
  • Low-oil shutdown
  • Works from tanks or mains

Frequently Asked Questions

How powerful is it?

Up to 3700 PSI (255 bar) maximum and 3400 PSI (234 bar) working pressure, at 15 litres per minute.

What engine does it use?

A 14 HP Loncin OHV 4-stroke air-cooled petrol engine of 420 cc, running on unleaded petrol.

Why a gearbox pump?

The gearbox lowers the pump speed for cooler running and a longer life, and German Parker seals and a thermal relief valve protect the brass pump.

Can it feed from a tank?

Yes, it is tank-feed ready and comes with a suction hose and inline filter for drawing from tanks, butts or mains.

Which nozzles come with it?

Five quick-release steel nozzles: 0°, 15°, 25°, 40° and soap for low-pressure detergent.

What is in the box?

The machine, a 10 m high-pressure hose and detergent pipe, a trigger gun and steel lance, 5 nozzles, the suction hose with inline filter, a tool kit and the manual.

Who makes it?

It is a Kiam Power Products machine from Equip2clean, sold by The Drivers HQ.

Do you deliver across the UK?

Yes, The Drivers HQ offers UK-wide delivery.

HQ Suggests Tips & Insights

  1. Check the oil before every start.
  2. Purge air from the pump before starting.
  3. Start with the 40° nozzle on delicate surfaces.
  4. Keep the 0° nozzle for stubborn dirt only.
  5. Use the inline filter when feeding from a tank.
  6. Release the pressure before changing nozzles.
  7. Let the engine cool before refuelling.
  8. Order online with UK-wide delivery from The Drivers HQ.

The Brand

Kiam Power Products

Kiam Power Products makes professional cleaning equipment for valeters, detailers, workshops and building sites: KV60 wet and dry vacuums, SiteVac dust extractors, the Aquarius steam cleaner and carpet extraction machine, and pressure washer accessories such as the 4000 PSI turbo nozzle. The KV60 vacuums have stainless steel tanks, and the SiteVac range covers M-Class and L-Class dust extraction for 240V and 110V supplies.

At The Drivers HQ we stock Kiam online with UK-wide delivery, including the KV60-2 wet and dry vacuum, the Aquarius Pro Valet and the SiteVac 240V M-Class 30L.

Shop all Kiam Power Products
Kiam vacuums and dust extractors

Kiam vacuums and dust extractors

KV60 wet and dry vacuums. The KV60-2 has twin 1200W motors, 2400W in all, and the KV60-3 triple 1000W motors, 3000W in all. Both have a 60 litre stainless steel tank, a 2.5m hose and a trolley base on castors with storage points for accessories. They suit vehicles, car washes, workshops and warehouses, and the KV60 is also widely used for gutter cleaning with Kiam gutter poles. At about 80cm tall it fits in most estate cars and small vans.

SiteVac 240V M-Class. The 20L and 30L models have a 1500W motor, a HEPA filter and M-Class dust extraction to EN 60335-2-69, for hazardous fine dusts such as wood, plaster and concrete. Kiam lists 170mbar maximum vacuum, 1.86 cubic metres a minute of airflow, 80dB and 6.7kg for the 30L. A power take-off socket starts and stops the vacuum with your power tool, a manual button cleans the filter, and a float valve stops suction when the tank is full.

SiteVac 110V. For sites on a 110V supply there are the M-Class 1000W 20L and 30L, and the L-Class 2000W 60L and 80L with a twin-motor system for low-risk hazardous dust. These carry Kiam's W.A.S.P. mark, short for Worksite Approved Specialist Product.

Shop more vacuums and hoovers.

Kiam steam, extraction and pressure washer accessories

Kiam steam, extraction and pressure washer accessories

Aquarius Pro Valet. The Aquarius Pro Valet is a spray extraction machine for car upholstery and carpets, rugs and sofas. It sprays cleaning solution and extracts it again in one pass, with separate tanks for clean solution, 6.5 litres, and dirty water, 7 litres. Kiam lists a 1100W motor, a 50W pump at 4 bar, 2 litres a minute of solution flow and a 3m hose.

Aquarius Pro Steam. The Aquarius Pro Steam is a dry steam cleaner with a 2000W heating core, for chemical-free cleaning of grease and grime in vehicle interiors and around the workshop.

Turbo nozzle. The Kiam 4000 PSI Turbo Nozzle spins a concentrated jet for heavy dirt, moss, green algae and block paving, and will even shift flaking paint from brickwork. It fits standard lances with a 1/4 inch male thread or a 1/4 inch quick release outlet, up to 4000 PSI, 280 bar, at 100°C. It is for hard surfaces, so keep it off car paint and trim.

Shop more extractors and steam cleaners and nozzles, wands and extensions.

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