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Radiator, Main (OEM) for B6-B7 S4 with Automatic Transmission

SKU: OEM-8E0121251AJ
ATTENTION B6-S4 OWNERS: This is an OEM B7-S4 Radiator. We are now offering this Radiator for B6-S4 owners since we have successfully adapted it to the B6-S4 with only minor tweaks AND it sells for less than half the price of the OEM B6-S4 radiator!!! Once again, JHM offers S4 owners a low cost, OEM replacement solution for their cars. Save over 50% by buying the OEM B7-S4 Radiator for your B6-S4!!!

This is an OEM Main Radiator for your Automatic Transmission B6-B7 S4. This is the central radiator that sits in the middle of the bumper. This is the same radiator that came on the B7-S4 from the factory. The OEM Part Number is 8E0121251AJ or 8E0 121 251 AJ.


The main difference between the B7-S4 Radiator and the B6-S4 Radiator is that the B7-S4 Radiator has a larger driver's side end tank and no relief for the B6-S4 style AC System High Pressure Switch. Additionally, the driver side end tank isn't as smooth on the back side of the tank which means that it doesn't completely close up the seal on the stock B7-S4 core support. After testing this setup for several thousand miles in different conditions, we have yet to see any adverse cooling issues from this.

There are only two minor tweaks you need to make to the parts on your B6-S4 to allow OEM B7-S4 Radiator work on your car. Please note that while the tweaks made to fit the OEM B7-S4 Radiator to your B6-S4 are minor, they are done at your own risk.
1) Bend the AC High Pressure Switch outward towards the front of the car. The AC High Pressure Switch is located on the driver side of the AC Condenser and will need to be moved to clear the larger B7-S4 Radiator drive side end tank.
2) Cut a relief or install a rubber spacer (about 3 inches long) on the driver's side hood stop bracket to keep it from rubbing in the ribs located on the B7-S4 Radiator's driver's side end tank.

Download the ZIP file located HERE to see pictures of these tweaks on our shop installation.

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This product fits the following vehicles:
Make Model Chassis Engine
Audi S4 B6 (2003-2005) 4.2l V8 40v
Audi S4 B7 (2005.5-2009) 4.2l V8 40v
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