HomeBelts and Cooling > Radiators, Coolers and Related ComponentsVaico V10-4478 Engine Coolant Reservoir
Part #: V10-4478

Vaico V10-4478 Engine Coolant Reservoir

VAICO
⚙️ 30 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦VAICO
🚗Fitment: Audi and Porsche, A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, Macan, and Q5
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Overview of the VAICO Engine Coolant Reservoir V10-4478

The VAICO Engine Coolant Reservoir V10-4478 is designed for reliable cooling system performance in select Audi and Porsche models. This reservoir supports efficient coolant storage and circulation, helping maintain optimal engine temperature.

  • Dimensions: 305 mm length, 290 mm width, 145 mm height
  • Lightweight design at 0.576 kg
  • Durable construction suitable for Audi A4, A5, Q5 and Porsche Macan models
  • Part number V10-4478 for precise identification
  • Part of the VAICO brand line known for quality automotive cooling components

Detailed Product Description

The VAICO Engine Coolant Reservoir V10-4478 measures 305 mm in length, 290 mm in width, and 145 mm in height, providing ample capacity for coolant expansion and storage. Weighing just 0.576 kg, this reservoir is engineered to integrate seamlessly into the cooling systems of Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, Q5, and Porsche Macan vehicles. The precise dimensions ensure compatibility and proper fitment, reducing the risk of leaks or coolant loss.

This reservoir is part of the VAICO product line, which focuses on delivering reliable and durable cooling system components. VAICO parts are designed to meet or exceed OEM specifications, ensuring consistent performance and longevity in demanding automotive environments.

Compatible Vehicles and Common Applications

  • Compatible with Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, and Q5 models
  • Compatible with Porsche Macan models
  • Used to replace worn or damaged engine coolant reservoirs
  • Helps prevent coolant leaks and overheating issues
  • Supports proper coolant circulation and engine temperature regulation

Installation Notes and Tips

When installing the VAICO Engine Coolant Reservoir V10-4478, ensure the vehicle is cool and the cooling system is depressurized. Verify the part number V10-4478 matches your vehicle’s requirements before installation. Properly secure all hose connections and check for leaks after installation. It is recommended to inspect the entire cooling system for wear or damage during replacement.

Quality Assurance and Warranty

VAICO products are manufactured to meet stringent quality standards, ensuring durability and reliable performance. The Engine Coolant Reservoir V10-4478 undergoes rigorous testing to comply with OEM specifications. Warranty details are provided by the manufacturer and should be confirmed at the time of purchase.

BrandVaico
Part NumberV10-4478
PositionVAICO
Height [mm]145
Length [mm]305
Packaging height [cm]14,5
Packaging width [cm]29
Weight [kg]0.576
Width [mm]290

This part fits 30 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersFuel TypePositionNotes
2017AudiA5 QuattroConvertible2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2017PorscheMacan2.0LL4N/AGrade: Aftermarket; Deleted without replacement; With OE No. 8K0121403Q; VAICO
2016AudiA4 allroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2016AudiA5 Quattro2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2016Audiallroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2016AudiQ52.0LL4ELECTRIC/GASN/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2015AudiA42.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2015AudiA4 allroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2015AudiA4 Quattro2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2015AudiA5 Quattro2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2015Audiallroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2015AudiQ52.0LL4ELECTRIC/GASN/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2014AudiA42.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2014AudiA4 allroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2014AudiA4 Quattro2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2014AudiA52.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2014AudiA5 Quattro2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2014Audiallroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2014AudiQ52.0LL4ELECTRIC/GASN/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2013AudiA42.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2013AudiA4 allroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2013AudiA4 Quattro2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2013AudiA52.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2013AudiA5 Quattro2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2013Audiallroad2.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2013AudiQ52.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2012AudiA52.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2012AudiA5 Quattro2.0LL4N/AGrade: Aftermarket; PR-TD1,TG6,TL6,TM4,TQ6; With OE No. 8K0121403Q; VAICO
2012AudiQ52.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO
2011AudiQ52.0LL4N/AGrade: Aftermarket; With OE No. 8K0121403Q; VAICO

* 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:

8K0 121 403 D8K0 121 403 G8K0 121 403 H8K0 121 403 Q8K0 121 403 T8K0121403AC

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