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MAHLE BEHR Coolant Expansion Tank 376730734 – Fits Audi A6/S6/RS7/A7 (2012–2018)

MAHLE BEHR Coolant Expansion Tank 376730734 – Fits Audi A6/S6/RS7/A7 (2012–2018)

MAHLE BEHR
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SKU 376730734
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$31.95 - $31.95
$31.95
$31.95 - $31.95
$31.95
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We show live inventory for in-stock items. Products may sell out due to high demand but are restocked regularly. Out-of-stock items can still be ordered and usually arrive within a few weeks.

This MAHLE BEHR coolant expansion tank (part 376730734) is a direct OE replacement for Audi A6, S6, RS7, and A7 models from 2012 to 2018 (C7 generation). It stores coolant and regulates system pressure to prevent overheating, ensuring reliable cooling system operation. Built with high-quality materials to withstand extreme temperatures and pressures.

Key Features & Benefits

  • OEM Number: Replaces Audi part 4G0121403G (supersedes 4G0121403AC).
  • Direct Fit: Exact replacement for the factory expansion tank.
  • Durable Construction: Resistant to heat, pressure, and corrosion.
  • Includes Cap: Often sold with integrated cap (check application).

Vehicle Fitment

Make Model Years Engine
Audi A6 Quattro 2012–2018 3.0V6
Audi A6 2012–2018 2.0L4
Audi S7 2013–2017 4.0V8
Audi S6 2013–2017 4.0V8
Audi RS7 2014–2017 4.0V8
Audi A7 Quattro 2012–2017 3.0V6
Audi A6 Quattro 2013–2017 2.0L4

Technical Specifications

Part Number 376730734
OEM Cross-Reference 4G0121403AC / 4G0121403G
Brand MAHLE BEHR

Installation Notes

Simple replacement; professional installation recommended.

About MAHLE BEHR

Mahle Behr is a leading global supplier of thermal management systems and original equipment for many automakers, ensuring OE-grade quality.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 7 applications
C7 A6
Make Model Engine Years
Audi A6 Quattro 3.0V6 2012–2018
Audi A6 2.0L4 2012–2018
Audi S6 4.0V8 2013–2017
Audi A6 Quattro 2.0L4 2013–2017
C7 A7
Make Model Engine Years
Audi S7 4.0V8 2013–2017
Audi A7 Quattro 3.0V6 2012–2017
C7 RS7
Make Model Engine Years
Audi RS7 4.0V8 2014–2017

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