HomeBelts and Cooling > Radiators, Coolers and Related ComponentsURO 4F0121403N Engine Coolant Reservoir
Part #: 4F0121403N

URO 4F0121403N Engine Coolant Reservoir

⚙️ 17 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$43.16Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, A6 and A6 Quattro
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Reservoir for Audi A6 and A6 Quattro

The URO Engine Coolant Reservoir with part number 4F0121403N is designed specifically for Audi A6 and A6 Quattro models. This replacement reservoir ensures proper coolant storage and system pressure management to maintain optimal engine temperature.

Key Features of URO Engine Coolant Reservoir 4F0121403N

  • Compatible with Audi A6 and A6 Quattro vehicles
  • Durable construction for long-lasting performance
  • Exact fit replacement for part number 4F0121403N
  • Maintains proper coolant levels and system pressure
  • Manufactured to meet OEM specifications

Detailed Description of the Engine Coolant Reservoir

The URO 4F0121403N engine coolant reservoir is engineered to match the original equipment specifications for Audi A6 and A6 Quattro models. It serves as a critical component in the vehicle’s cooling system by storing excess coolant and allowing for thermal expansion. This reservoir helps prevent overheating by maintaining the correct coolant volume and pressure within the system. Constructed from high-quality materials, it resists cracking and deformation caused by heat and pressure fluctuations, ensuring reliable operation over time.

Common Issues Addressed by This Coolant Reservoir

  • Coolant leaks due to cracked or damaged reservoir
  • Overheating caused by insufficient coolant storage
  • Pressure loss in the cooling system affecting engine temperature regulation
  • Coolant contamination from reservoir deterioration
  • Warning lights related to coolant level sensor malfunctions

Installation Notes and Tips

When installing the URO 4F0121403N engine coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. Carefully remove the old reservoir and inspect hoses and clamps for wear or damage, replacing them if necessary. Secure the new reservoir firmly and refill the cooling system with the appropriate coolant type recommended for Audi A6 and A6 Quattro models. Bleed the system to remove air pockets and verify there are no leaks after installation.

Quality Assurance and Warranty Information

URO parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. While specific warranty details for part number 4F0121403N may vary, URO typically offers limited warranties covering defects in materials and workmanship. Refer to the product documentation or supplier for exact warranty terms.

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011AudiA6N/A
2011AudiA6 Quattro4.2LV8N/A
2010AudiA6N/A
2010AudiA6 Quattro4.2LV8N/A
2009AudiA6N/A
2009AudiA6 Quattro4.2LV8N/A
2008AudiA6N/A
2008AudiA6 Quattro4.2LV8N/A
2008AudiA6 Quattro3.2LV6N/A
2007AudiA6N/A
2007AudiA6 Quattro4.2LV8N/A
2007AudiA6 Quattro3.2LV6N/A
2006AudiA6N/A
2006AudiA6 Quattro4.2LV8N/A
2006AudiA6 Quattro3.2LV6N/A
2005AudiA6 Quattro4.2LV8N/A
2005AudiA6 Quattro3.2LV6N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

118 04003 0363767371414F0 121 403C4F0 121 403G4F0 121 403N4F0 121 403R4F0121403NURO-013442V10-0979

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.