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One Piece Aisin Engine Water Pump with Cast Housing

This pump comes as a one piece with backing housing casting - bolts back to the block

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100 % of 100
£74.40 £62.00

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Product Code:
CWP004
Order before 15:00 GMT weekdays for same day dispatch.

Order by 15:00 mon-fri for same day dispatch.

28 Day returns or exchange.

28 Day returns or exchange.

1 Year Parts Warranty

1 Year Parts Warranty

A brand new One-Piece Aisin engine water pump for the Hilux Pickup KUN25 & KUN26 (2KDFTV & 1KDFTV engine) complete with backing housing designed to bolt back to the block, manufactured by Aisin who is the original manufacturer for Toyota. 

  • KUN25 & KUN26 Mk6/7 Hilux 1KDFTV & 2KDFTV engines were only ever originally fitted with this one piece type water pump.
  • Aisin manufacture for Toyota, therefore this engine water pump is as per the original fitment of the original water pump fitted from factory.

The water pump is bolted to the engine, the viscous fan and fan blade then bolts to the water pump. The water pump is complete with a new mounting gasket and mounting studs to mount the viscous fan to the water pump. This controls the engines cooling system by spinning the fan and cooling the radiators which in turn cools the engine down.

Aisin manufacture for Toyota, therefore this engine water pump is as per the original fitment of the original water pump fitted from factory.

RoughTrax are now direct agents for Aisin, therefore pleased to be able to supply this quality Original Equipment (OE) product at a much discounted price.

About Aisin:
Aisin's advanced aluminium die-casting technology allows for size and weight reductions without sacrificing cooling performance. The highest quality materials are used, creating stronger body design and resistance to corrosion. Advanced technological design produces smooth coolant flow channels, efficient rotors, ball bearings, and carbon ceramic mechanical sealing for optimum cooling performance and longevity.

More Information
Weight 4.000000
Manufacturer Aisin
MPN (Manufacturer Part Number) WPT-166V
OE Equivalent Part Number 16100-69355, 16100-69356, 16100-69357, 16100-39485, 16100-39486, 16100-09260, 16100-09261
Warranty Options 1 Year Parts Warranty
Fitting Position Bolts to the engine block
Unit of Sale Individually (x1)
Specs & Fitment

Compatible Engine Codes: 2KDFTV, 1KDFTV, 1KZT & 1KZTE

Fuel Type: Diesel Engines Only

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Delivery Information - Cut-off Time 15:00 Monday-Friday

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PLEASE NOTE: Orders placed before 15:00 weekdays will be dispatched on the same day subject to stock and points below. Orders placed after 15:00 on Friday or over the weekend will be dispatched on the following Monday.

If you wish to make any additions or alternations to your initial order you will need to let us know before 12.00 noon.

We are closed over Bank Holidays.

For full details please visit to our Deliveries page.


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  • All products must be re-sellable and returned along with the original packaging and documents. (Stock to order or Special order items are non-returnable).
  • Goods must be returned within 28 days of purchase as per our Terms and Conditions
  • Products must be returned to RoughTrax at RoughTrax Ltd, Units 4-7 Pixash Business Centre, Pixash Lane, Keynsham, Bristol. BS31 1TP United Kingdom

If Returned parts that qualified for Free Delivery.

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Please visit our Returns page to download a returns form and for further information.

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Questions & Answers for One Piece Aisin Engine Water Pump with Cast Housing


Do I need anything else when fitting a pump?
You may want to use a thin film of silicone sealant either side the gasket and of course, new coolant is always a good idea.

My pump appears smaller than this pump?
Some earlier models had a separate small pump that fitted into an alloy backing housing behind, this then fitted to the block. Aisin (for Toyota) redesigned this setup to a more efficient one piece pump that simply bolts straight to the block. It's a direct replacement and becomes obvious once the old one is removed.


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