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Audi Radiator 4D0121251R – Behr

Audi Radiator 4D0121251R – Behr

MAHLE BEHR
Availability:
Out of stock
SKU 376735341
Sold out
$251.95 - $251.95
$251.95
$251.95 - $251.95
$251.95
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 Audi radiator (OEM part 4D0121251R) by MAHLE Behr is a high-quality direct replacement for the engine cooling system. It efficiently transfers heat from coolant to air, keeping engine temperatures optimal. Designed to meet or exceed OE specifications, it provides reliable cooling for Audi A8 and S8 models from 2000-2003.

Key Features & Benefits

  • OEM Quality: Manufactured by MAHLE Behr, a leading OE supplier, ensuring exact fit and performance.
  • Direct Replacement: Designed to bolt in with no modifications required.
  • Efficient Cooling: Multi-tube aluminum core with plastic tanks for maximum heat dissipation.
  • Durable Construction: Corrosion-resistant materials for long service life.
  • Rigorous Testing: Meets strict OEM standards for reliability.

Vehicle Fitment

Make Model Years Engine
Audi S8 2001–2002 4.2V8
Audi S8 2003 4.2V8
Audi A8 Quattro 2000–2002 4.2V8
Audi A8 Quattro 2003 4.2V8

Technical Specifications

Part Number 376735341
OEM Part Number 4D0121251R
Material Aluminum core with plastic tanks

Installation Notes

Direct fit replacement; professional installation recommended.

About MAHLE Behr

MAHLE Behr is a world-renowned OE supplier of thermal management systems, trusted by leading automotive manufacturers.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 4 applications
D2 S8
Make Model Engine Years
Audi S8 4.2V8 2001–2002
D3 S8
Make Model Engine Years
Audi S8 4.2V8 2003–2003
D2 A8
Make Model Engine Years
Audi A8 Quattro 4.2V8 2000–2002
D3 A8
Make Model Engine Years
Audi A8 Quattro 4.2V8 2003–2003
Fits 4 vehicle applications Check vehicle fitment before ordering View fitment

About this Radiator

The MAHLE BEHR 376735341 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.