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REIN AUTOMOTIVE Water Hose - CHE0431

REIN Automotive Coolant Hose (06F121057D) - Fits Audi A4/A4 Quattro 2.0T 2005-2009

REIN AUTOMOTIVE
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UGC 06F121057D
$4.72 - $4.72
$4.72
$4.72 - $4.72
$4.72
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 REIN Automotive coolant hose is a direct replacement for original parts (OEM 06F121057D) on Audi A4 and A4 Quattro models with 2.0L turbo engine from 2005 to 2009. Made from high-quality reinforced rubber, it ensures reliable coolant flow and prevents overheating. Durable construction resists cracking and swelling for long-lasting performance.

Key Features & Benefits

  • Direct Fit: Matches OEM dimensions and bends for easy installation.
  • Durable Material: Reinforced rubber withstands heat and pressure.
  • OEM Reference: Replaces part number 06F121057D.
  • Prevents Leaks: Tight seal at connections.

Vehicle Fitment

Make Model Years Engine
Audi A4 Quattro 2005–2008 2.0L4
Audi A4 Quattro 2009 2.0L4
Audi A4 2005–2008 2.0L4
Audi A4 2009 2.0L4

Technical Specifications

Part Number 06F121057D
Brand REIN Automotive
Material Reinforced Rubber
Position Coolant Hose

Installation Notes

Installation is straightforward; replace clamps recommended.

About REIN AUTOMOTIVE

REIN Automotive is a trusted manufacturer of cooling system parts known for quality and reliability.

This part also goes by the following cross reference.

Cross Reference Part Number: 06F121057D

Fits These Vehicles 4 applications
B7 A4
Make Model Engine Years
Audi A4 Quattro 2.0L4 2005–2008
Audi A4 2.0L4 2005–2008
B8 A4
Make Model Engine Years
Audi A4 Quattro 2.0L4 2009–2009
Audi A4 2.0L4 2009–2009
Fits 4 vehicle applications Check vehicle fitment before ordering View fitment

About this Coolant Hose

The REIN AUTOMOTIVE 06F121057D coolant hose carries coolant between the engine, radiator, heater core or expansion tank. Hoses age from heat and pressure, and a single failed hose can empty the cooling system and overheat the engine within minutes.

Frequently asked questions

What are the signs of a failing coolant hose?

Coolant drips or dried coolant residue, a sweet smell, a hose that feels soft, swollen or cracked, a low-coolant warning, or rising engine temperature. Squeeze hoses when the engine is cold: a healthy hose feels firm but flexible.

What should I replace along with the hose?

Replace any clamps, O-rings or seals at the connections. Many European cars use plastic quick-connect fittings that become brittle with age, so inspect neighbouring hoses and fittings while the system is drained.

What coolant should I use?

Use the coolant type your car's manufacturer specifies, mixed to the correct ratio. Mixing incompatible coolants can cause deposits and reduce protection.

Can I replace a coolant hose myself?

Usually, yes. Let the engine cool completely before opening the system, catch and dispose of old coolant properly, and bleed the air out of the system afterwards following your car's procedure; trapped air can cause overheating.

How do I make sure this coolant hose 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.