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Audi Radiator (Secondary) 4B3121251C – Behr 376765231
Audi Radiator (Secondary) 4B3121251C – Behr 376765231
Audi Radiator (Secondary) 4B3121251C – Behr 376765231
Audi Radiator (Secondary) 4B3121251C – Behr 376765231

Audi Radiator (Secondary) 4B3121251C – Behr 376765231

MAHLE BEHR
Disponibilidad:
Agotado
SKU 376765231
Agotado
$117.95 - $117.95
$117.95
$117.95 - $117.95
$117.95
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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This Behr secondary radiator (376765231) is a direct OEM replacement for the auxiliary cooling system in Audi A6 and S6 models. It provides additional cooling capacity to support the main radiator, particularly for high-output V8 engines. Built to OEM specifications, it ensures reliable performance and longevity.

Key Features & Benefits

  • Direct Fit OE Replacement: Exact match to original part number 4B3121251C for easy installation.
  • High-Quality Construction: Made from durable materials to withstand demanding conditions.
  • Enhanced Cooling: Provides additional cooling capacity for V8 engines in A6 and S6 models.
  • Compatibility: Fits Audi A6 Quattro and S6 with 4.2L V8 (2000-2004).

Vehicle Fitment

Make Model Years Engine
Audi A6 Quattro 2000–2004 4.2V8
Audi S6 2002–2003 4.2V8

Technical Specifications

Part Number 376765231
OEM Cross-Reference 4B3121251C
Material Aluminum core, plastic tanks

Installation Notes

Direct replacement; no modifications required.

About MAHLE BEHR

MAHLE BEHR is a leading OEM supplier of automotive cooling systems, known for high quality and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications
C5 A6
Make Model Engine Years
Audi A6 Quattro 4.2V8 2000–2004
C5 S6
Make Model Engine Years
Audi S6 4.2V8 2002–2003
Fits 2 vehicle applications Check vehicle fitment before ordering View fitment

About this Radiator

The MAHLE BEHR 376765231 radiator releases engine heat to the air flowing through it, keeping the engine at its correct operating temperature. Many European radiators use plastic end tanks that can crack with age and heat cycles.

Frequently asked questions

What are the signs of a failing radiator?

Coolant leaks or white or green residue on the radiator, a cracked plastic tank, frequent low-coolant warnings, or the engine running hotter than normal, especially in traffic or when towing.

What should I replace along with the radiator?

Replace the O-rings, clamps and any brittle hoses or plastic fittings at the connections. If the car has high mileage, it is a good time to consider the thermostat and the expansion tank as well.

What coolant should I use?

Use the coolant your car's manufacturer specifies, mixed to the correct ratio, and flush the old coolant if it looks dirty or contaminated.

How do I refill the system after installation?

Fill with the correct coolant and bleed the air out following your car's procedure, which may include bleed screws or an electric water pump bleed routine. Trapped air can cause overheating even with a new radiator.

How do I make sure this radiator fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.