Precision Pumps for Precision Engines: Choosing the Right Pierburg Pump for BMW’s N47D20 Engine
January 8, 2025
In the BMW N47D20 four-cylinder diesel the tandem pump combines vacuum and oil pressure management in one unit, keeping everything running smoothly. But not just any pump will fit the bill.
| When it’s time for a replacement, choosing the right model is key. The wrong pump can mean low oil pressure, reduced performance, and even serious engine damage down the line. First of all, we recommend Pierburg—a brand trusted for precision-engineered parts built to meet BMW’s exact standards. In this article, we’ll explore four Pierburg pump models to inform which is the perfect match for your N47D20. |  |
For overhaul professionals, selecting the right pump for the BMW N47D20 engine is essential. While many pumps may appear similar, each model is designed with specific details to suit various engine variations. An incorrect model can lead to issues like insufficient oil flow, premature wear, and costly repairs.
Pierburg’s Four Essential Pump Models for the BMW N47D20 Engine
Let’s examine the four Pierburg pumps designed for the various N47D20 configurations. Each model comes with unique features and compatibility factors to ensure peak performance when matched with the right engine:
 |
| WG1925019
This pump is designed without the O-ring and the design. The vacuum pump’s outlet opening is different from other types of this pump, making it a precise fit for the OE number 11 41 8 508 629 for the BMW N47D20 C (N47TU) engine. |
| |
| WG2043293
This pump features a design without the O-ring and the design of the vacuum pump’s outlet opening is different from other types of this pump, ensuring an exact match for the OE number 11 41 8 518 405 for the BMW N47D20 C (N47TU) engine. |
 |
| WG2396085
This pump includes an O-ring, making it specifically designed for OE numbers 11 41 7 810 451 and 11 41 7 798 014 for the BMW N47D20 engine. |
 |
| WG2396086
This pump includes an O-ring, making it specifically designed for OE number 11 41 7 810 823 for the BMW N47D20 C engine. |
Pierburg Has A Century of Engineering Excellence
For more than a hundred years, Pierburg has set the standard in automotive component manufacturing, known for its engineering precision and dedication to quality. Specializing in systems like tandem pumps and EGR (exhaust gas recirculation), Pierburg consistently meets the exacting standards of European automakers, including BMW. As part of the same company as the renowned brand Kolbenschmidt, Pierburg shares a legacy of excellence that customers have trusted for generations.
Pierburg’s tandem pumps are built to meet the tough demands of oil and vacuum management in BMW’s N47D20 engines. With durable materials and a commitment to rigorous testing, Pierburg delivers the kind of dependable performance that overhaul pros rely on every day. When it comes to replacing critical components, mechanics and wholesalers alike know that Pierburg products are made to withstand the demands of the road, providing long-lasting support to BMW’s powerful engines.
Making the Right Choice for BMW’s N47D20 Engine
In BMW’s high-performance engines, every part matters, and the tandem pump is no exception. Choosing the right Pierburg pump helps keep the engine running smoothly and reliably. Selecting the correct pump isn’t just a routine replacement; it’s a must to ensure the right installation.
If you need assistance selecting the right model, our team is here to help—reach out to us at export@wilminkgroup.com.