WATER PUMP COVER 2014-2021 YAMAHA YZ450F SUPERCOOLER BOYESEN WPK-38CB
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
Black Supercooler water pump cover and impeller kit engineered to improve coolant circulation and maintain more stable operating temperatures. The hydrodynamic design increases flow across the rev range and reduces cavitation and hydraulic friction. Features increased coolant flow at all rpm ranges. Patented Nautilus-style impeller for hydrodynamic efficiency. Reduces cavitation and hydraulic friction. Seamless hydrodynamic design with high-capacity inlets. Heat-treated 17-4 stainless steel shaft for durability. Extends engine life. Powder-coat finish available in silver, black or magnesium-coloured. Kit type: Water pump cover and impeller kit. Cover material: Aluminium (investment cast). Impeller design: Nautilus-style, high-flow. Shaft material: Heat-treated 17-4 stainless steel. Finish: Black powder-coat.
- SKU
- 05-075.BK
- Brand
- Boyesen
- Availability
- In Stock (1)
Fitments (22)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 450F | 2016 |
| YAMAHA | WR 450F | 2017 |
| YAMAHA | WR 450F | 2018 |
| YAMAHA | WR 450F | 2019 |
| YAMAHA | YZ 450F | 2014 |
| YAMAHA | YZ 450F | 2015 |
| YAMAHA | YZ 450F | 2016 |
| YAMAHA | YZ 450F | 2017 |
| YAMAHA | YZ 450F | 2018 |
| YAMAHA | YZ 450F | 2019 |
| YAMAHA | YZ 450FX | 2016 |
| YAMAHA | YZ 450FX | 2017 |
| YAMAHA | YZ 450FX | 2018 |
| YAMAHA | YZ 450FX | 2019 |
| YAMAHA | YZF 450 | 2014 |
| YAMAHA | YZF 450 | 2015 |
| YAMAHA | YZF 450 | 2016 |
| YAMAHA | YZF 450 | 2017 |
| YAMAHA | YZF 450 | 2018 |
| YAMAHA | YZF 450 | 2019 |
| YAMAHA | YZF 450 | 2020 |
| YAMAHA | YZF 450 | 2021 |
- General Colour C
- Black
- General Product Group
- Cooling Systems & Parts
- General Product Type
- Water Pump Cover
- Variant Id
- 208004
FULL DESCRIPTION
Boyesen Supercooler Water Pump Cover and Impeller Kit
Enhance your motorcycle's cooling system with the Boyesen Supercooler Water Pump Cover and Impeller Kit. This advanced kit is engineered to significantly improve coolant circulation, leading to more stable operating temperatures and potentially extending engine life. The hydrodynamic design promotes increased flow across the entire RPM range, effectively reducing cavitation and hydraulic friction for optimal performance.
Key Features:
- Increases coolant flow across all RPM ranges for superior engine cooling.
- Features a patented Nautilus-style impeller designed for maximum hydrodynamic efficiency.
- Reduces damaging cavitation and hydraulic friction within the cooling system.
- Boasts a seamless hydrodynamic design with high-capacity inlets for optimal coolant intake.
- Equipped with a heat-treated 17-4 stainless steel shaft for enhanced durability and longevity.
- Aims to extend the overall life of your engine by maintaining consistent temperatures.
- Available in a durable black powder-coat finish for a sleek appearance.
Specifications:
- Kit Includes: Water pump cover and impeller.
- Cover Material: Investment cast aluminum for strength and light weight.
- Impeller Design: High-flow Nautilus-style impeller.
- Shaft Material: Heat-treated 17-4 stainless steel for robust performance.
- Finish: Black powder-coat.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.