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High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54
High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54
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High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54
High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54
Stewart is the final word in high-performance pumps for BMW cooling, providing up to 20% increase in water flow and twice the efficiency of the stock pump with a limited lifetime warranty.
High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54
Item #: 6891306

High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 (6 Cyl.) M50/52/54

88% of respondents would recommend this to a friend

Item #: 6891306

RWF 436063

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*All items will import from US

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Only 13 items left in stock.
Order now and get it around Tuesday, September 22
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Stewart is the final word in high-performance pumps for BMW cooling, providing up to 20% increase in water flow and twice the efficiency of the stock pump with a limited lifetime warranty.
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What Stands Out

High Performance
Designed for high-efficiency operation, the EMP STEWART pump maximizes water flow, ensuring optimal engine cooling and performance in BMW E36, E46, E39, X5, and Z3 models.
Durable Construction
Built with premium materials, this water pump promises longevity and reliability, minimizing the risk of failure and maintaining consistent performance in demanding driving conditions.
Easy Installation
Engineered for direct fit, the pump simplifies installation with its user-friendly design, saving time and effort for DIY enthusiasts and professionals working on BMW six-cylinder engines.

Product Details

Upgrade your BMW cooling system with our high performance water pump. Increase water flow, reduce drag, and get a limited lifetime warranty. Shop now at Ubuy Rwanda!
  • High performance water pump for BMW E36, E46, E39, X5, Z3 6 cyl. models
  • Fits BMW 1991-2005 models with 6 cylinder engines (M50, M52, M54)
  • Replaces part numbers: 11 51 7 527 799 / 11 51 7 509 985
  • Brand new, premium quality
  • Up to 20% increase in water flow over stock pump
  • Limited lifetime warranty from Stewart
Brand NameJUSTSWAGDDEEFF
Model NumberEMP STEWART
Manufacturer Part NumberHengulus
ManufacturerEMP STEWART
UPC704438516705
Part Interchange Inforeplaces part
Compatible with Vehicle TypeCar
OEM Equivalent Part Number11 51 7 527 799 / 11 51 7 509 985
Automotive Fit TypeVehicle Specific Fit
Material TypeStainless Steel
Weight ClassHeavy Weight
BrandJUSTSWAGDDEEFF
MaterialStainless Steel
Vehicle Service TypeCar
OEM Part Number11 51 7 527 799 / 11 51 7 509 985
Package Weight3.3 Pound

Who Should Buy?

Suitable For
  • Performance Enthusiasts

    Ideal for users seeking enhanced cooling performance in their BMW's M50/52/54 engine during high-stress driving conditions.

  • Track Racers

    Perfect for those participating in motorsports or track days, needing reliable cooling to maintain optimal engine performance.

  • Car Modifiers

    Suited for owners upgrading their vehicles for improved performance, ensuring better coolant flow in modified engines.

Not Suitable For
  • Casual Drivers

    Not necessary for daily drivers who do not push their vehicles to high performance or racing conditions.

Product Description

About This Item

Introducing the High Performance Water Pump EMP STEWART for BMW E36 E46 E39 X5 Z3 6 Cyl. M505254. When it comes to cooling, Stewart is the final word in high-performance pumps.

Designed specifically for BMW vehicles, this water pump is the ultimate solution to keep your engine cool and running at optimal performance levels. With a limited lifetime warranty, you can trust the reliability and durability of this high-performance water pump. It is a direct replacement for your stock pump and accepts the factory fan clutch, making installation quick and easy.

The front of the pump is stock appearing, providing a clean and seamless look under the hood. However, don't let its appearance fool you. The back of the pump is all business, offering up to a 20% increase in water flow over the stock pump.

This means improved cooling efficiency and maximum performance for your BMW. Not only is the EMP STEWART water pump more efficient than the factory pump, but it also has much less parasitic drag compared to other pumps on the market. This means you can enjoy improved horsepower and fuel economy.

Designed for both racing and stock factory replacement applications, this water pump features a heavy-duty stainless steel impeller and larger bearings for enhanced durability. The high-quality water seal made from carbon graphite ensures a reliable and long-lasting performance. Upgrade your BMW's cooling system with the EMP STEWART water pump.

Experience the difference in performance and reliability with this high-performance water pump. With a limited lifetime warranty from Stewart, you can have peace of mind knowing that your investment is protected. Don't settle for anything less than the best.

Choose the EMP STEWART water pump for BMW and take your vehicle's cooling system to the next level. Upgrade, install, and maintain your water pump with ease.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are the benefits of using the High Performance Water Pump EMP STEWART for my BMW?

    Answer: The High Performance Water Pump EMP STEWART is designed to optimize cooling efficiency in BMW models like E36, E46, E39, X5, and Z3. Its robust construction and superior materials ensure enhanced durability and reliability under high-stress conditions. By maintaining optimal engine temperature, this water pump helps prevent overheating, which is crucial for performance and longevity. Many users report improved engine responsiveness and performance in both daily driving and high-performance scenarios.
  • Question: How does the EMP STEWART water pump compare to stock pumps?

    Answer: Compared to stock water pumps, the High Performance Water Pump EMP STEWART boasts superior flow rates and thermal management. This means it can cool the engine more effectively, especially during heavy use, such as racing or demanding off-road conditions. The pump's design minimizes cavitation and increases efficiency, translating to better engine performance and lower chances of overheating. Many performance enthusiasts prefer this upgrade to extract maximum potential from their BMW.
  • Question: Is the installation of the EMP STEWART water pump complex?

    Answer: Installation of the EMP STEWART water pump requires some mechanical skill and can be moderately complex. It is recommended to have a basic understanding of BMW engine components and cooling systems. Although it may take a bit more time than a standard replacement, the performance benefits realized are substantial. For those not comfortable with DIY projects, seeking a professional mechanic is often worthwhile to ensure proper installation and optimal performance.
  • Question: What models are compatible with the EMP STEWART water pump?

    Answer: The EMP STEWART water pump is specifically designed for several BMW models including E36, E46, E39, X5, and Z3 with a 6-cylinder engine. It is essential to verify your vehicle’s specifications before purchasing to ensure compatibility. This pump is engineered to fit seamlessly, providing significant cooling performance enhancements, particularly for drivers engaging in spirited driving or racing. Check your vehicle’s engine type to confirm fitment.
  • Question: Does the EMP STEWART water pump require any special maintenance?

    Answer: The High Performance Water Pump EMP STEWART requires standard cooling system maintenance, such as regular coolant checks and changes. While its design minimizes wear and extends life, it’s prudent to inspect for leaks or signs of wear during regular vehicle maintenance. Using the correct type of coolant is crucial for maintaining peak performance. In high-performance applications, checking the pump more frequently is advisable to avoid cooling issues.
  • Question: What materials are used in the construction of the EMP STEWART water pump?

    Answer: The EMP STEWART water pump is made using high-grade aluminum and high-performance composite materials, ensuring lightweight but durable construction. This choice of materials helps in optimizing thermal conductivity while being resistant to corrosion. The enhanced engineering allows for efficient coolant flow, making it perfect for regular driving and challenging conditions alike. Users appreciate the reliability and performance that these materials bring to their BMW engines.
  • Question: Will upgrading to the EMP STEWART pump affect my vehicle's performance?

    Answer: Yes, upgrading to the High Performance Water Pump EMP STEWART can significantly enhance your vehicle's performance. By providing better cooling, it allows your engine to run more efficiently, resulting in improved power output and responsiveness. This is particularly noticeable during high-stress conditions like track days or long-distance drives where optimal cooling is crucial. Many drivers have reported increased torque and throttle response after installation.
  • Question: Can I use the EMP STEWART water pump for racing applications?

    Answer: Absolutely! The High Performance Water Pump EMP STEWART is specifically designed for enthusiasts who engage in racing and other performance applications. Its superior flow rate and cooling efficiency make it a favored choice for competitive sports, where engine durability under stress is vital. Many racers find that its capacity to maintain optimal temperatures enhances their overall performance during intense driving situations.
  • Question: What is the expected lifespan of the EMP STEWART water pump?

    Answer: The lifespan of the High Performance Water Pump EMP STEWART can vary based on usage and maintenance, but it is designed for long-term durability in performance settings. Drivers who maintain their cooling systems and monitor engine health can expect a significant performance lifespan, even under demanding conditions. Regular checks and proper coolant management can further enhance its longevity, making it a smart investment for enthusiasts.
  • Question: Where can I buy the High Performance Water Pump EMP STEWART for BMW in Rwanda?

    Answer: You can buy the High Performance Water Pump EMP STEWART for your BMW from Ubuy in Rwanda. Ubuy offers a reliable platform for purchasing automotive performance parts, ensuring you receive a genuine product backed by user-friendly service. With various shipping options and a commitment to customer satisfaction, Ubuy is a smart choice for accessing high-quality car components.

JUSTSWAGDDEEFF Water Pumps EMP STEWART Editorial Review

If you're looking for a high-quality water pump for your BMW, the Stewart EMP water pump is an excellent choice. It is suitable for all BMWs with the M52 or M54 engine, including the 1999 BMW 323i. The pump comes with a gasket, making it easy to install. Additionally, it has a metal propeller and an upgraded bearing to ensure longer service, and a more clever design with additional slits to improve flow rates. This pump is durable, well-built, and great value for money.

Customer Reviews & Ratings

73 customers ratings
  • 5 Star
    88%
  • 4 Star
    5%
  • 3 Star
    3%
  • 2 Star
    0%
  • 1 Star
    4%

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Pros

  • High-quality metal Construction
  • Improved flow rates
  • Durable and long-lasting
  • Comes with a gasket
  • Easy to install
  • Suitable for a wide range of BMWs

Cons

  • Not compatible with E46 M3 with SMG Overall, the Stewart EMP water pump is an excellent choice for anyone looking for a high-quality and long-lasting water pump for their BMW. It is easy to install, reasonably priced and comes with a gasket.

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9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

RWF 436063

Order now and get it around Tuesday, September 22

QTY:

Only 13 items left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

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Fastest cross-border delivery

Features & Benefits

  • Stewart is the ultimate in BMW cooling with high-performance water pumps.
  • It offers a 20% increase in water flow over the stock pump.
  • Twice as efficient and has less parasitic drag than other pumps.
  • Stainless steel impeller, high-quality water seal, and larger bearing.
  • Limited lifetime warranty offered by Stewart.
  • The pump is designed for racing or stock factory replacement applications.

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