Genuine Audi 4-Bolt to 6-Bolt Water Pump Conversion Kit for Audi EA839 2.9TT/3.0T B9 S4/S5/SQ5/RS5 & More

Overview

Audi EA839 4-Bolt to 6-Bolt Water Pump Conversion Kit

If you own an EA839 2.9T or 3.0T Audi, chances are you’ve heard about — or already experienced — the early 4-bolt water pump failures. Audi eventually revised the design to a stronger 6-bolt configuration, improving durability and reducing the likelihood of repeat failures.

This conversion kit allows you to ditch the weak factory 4-bolt setup and upgrade to the revised 6-bolt water pump design used on later EA839 engines.

Instead of replacing your failed pump with the same outdated design, this kit gives you the parts needed to upgrade the system properly while you’re in there. Whether you're doing preventative maintenance or replacing a leaking pump, this conversion ensures your cooling system is built to handle the demands of daily driving, tuned power levels, and spirited driving. 

If you're servicing the cooling system on an EA839 engine, this upgrade simply makes sense.

Why Upgrade to the 6-Bolt Design?

The original 4-bolt configuration places more stress on the pump shaft and pulley under load. Audi addressed this by redesigning the system with six mounting points, spreading the load more evenly and improving long-term reliability.

✔ Updated Audi 6-bolt water pump design
✔ Improved load distribution and durability
✔ Prevents repeat failures from the early 4-bolt design
✔ Ideal upgrade during water pump replacement

Details

• Converts early EA839 4-bolt water pump systems to the updated 6-bolt configuration
• OE-style components designed for factory fit and reliability
• Preventative upgrade to eliminate the weaker early design
• Perfect for maintenance, repairs, or performance builds

Kit Includes:

*Substitute availabe: Select the TGK Coolant Shut-off Valve Delete Kit for just $100 more. This part replaces the OEM Coolant Shut-Off Valve and will prevent coolant from getting into the vacuum lines in the future with the OEM Coolant Shut-Off Valve! Read more about the TGK Coolant Shut-Off Valve Delete kit here.

When Should You Install This Kit?

This conversion is recommended when:

• Replacing a leaking or failed water pump
• Performing preventative cooling system maintenance
• Upgrading an early EA839 engine to the latest OEM design

Doing the conversion once helps prevent having to tear the front of the engine apart again later.

Fitment

⚠️ Important:
Vehicles originally equipped with the 4-bolt water pump must convert to the 6-bolt design when installing the updated pump. This kit provides the components required to complete that conversion.