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  2. sku: 11407919112369631
  3. AUDI 4E0819371M

AUDI 4E0819371M Heater Coolant Supply Hose Line 4.2L

fits model: A8, D3. make: Audi. year: 2004–2010.

4e0819371m Audi 2004-2010 A8 D3 4.2l - Heater Coolant Supply Hose / Line

( Manufacturer Part Number: 4E0819371M ), ( Part Type: Line Heater Supply Hose ), ( Manufacturer Warranty: 30 Day ), ( Tested: Tested, Cleaned And Inspected ), ( Fitment Type: Direct Replacement )

Review AUDI 4.2l Heater Coolant Supply Hose Line fits A8 D3 2004–2010

The Audi 4E0819371M heater coolant supply hose line is an essential component of the cooling system in Audi A8 (D3) models manufactured between 2004 and 2010, equipped with a 4.2L engine. This heater coolant supply hose line is designed to transport coolant from the engine to the heater core, allowing the vehicle's heating system to function correctly.

This hose line is made of high-quality materials, ensuring durability and resistance to the harsh conditions that coolant systems are exposed to. It features an inner rubber hose, reinforced with a layer of stainless steel braiding that protects against abrasion and damage from the engine's heat. The outer layer is a thermally insulated jacket, which helps maintain the temperature of the coolant and reduces heat loss.

The Audi 4E0819371M heater coolant supply hose line features a secure, O-ring sealed connection at both ends. These connections ensure a tight seal, preventing coolant leaks and maintaining the integrity of the cooling system. The hose line is also equipped with a pressure relief valve that helps protect the engine from overheating in case of a cooling system malfunction.

This heater coolant supply hose line is an essential replacement part for any Audi A8 (D3) with a 4.2L engine that exhibits signs of a leaking or damaged hose line. Installing a new hose line can help prevent further damage to the engine and improve the overall performance and efficiency of the cooling system.

When replacing the heater coolant supply hose line, it's essential to follow the proper installation procedures to ensure a secure and leak-free connection. This may involve draining the coolant system, disconnecting the old hose line, and installing the new hose line according to the manufacturer's instructions. It's also recommended to use new O-rings and coolant when installing a new hose line to ensure a proper seal and adequate cooling system performance.

In summary, the Audi 4E0819371M heater coolant supply hose line is a crucial component of the cooling system in Audi A8 (D3) models with a 4.2L engine. Made of high-quality materials and featuring secure connections, this hose line ensures efficient coolant transport and proper heating system function. When replacing a damaged or leaking hose line, it's essential to follow the proper installation procedures to ensure a secure and leak-free connection and proper cooling system performance.

The Audi 4E0819371M heater coolant supply hose line is a critical component of the cooling system in Audi A8 cars with 4.2L engines manufactured between 2004 and 2010. Replacing this hose line can help prevent coolant leaks, overheating, and potential engine damage. Here are some pros and cons of buying this part.

Pros:

1. Improved coolant flow: A new hose line ensures proper coolant circulation between the engine and heater core, enhancing the overall performance of the cooling system.

2. Prevention of leaks: A worn-out or damaged hose line can result in coolant leaks, which could lead to significant engine damage. Replacing the hose line with a new one helps prevent such leaks.

3. Enhanced safety: Driving with a faulty cooling system can be risky, as it may cause the engine to overheat, leading to potential accidents. Replacing the heater coolant supply hose line is a proactive measure to ensure safety.

Cons:

1. Cost: Replacing the Audi 4E0819371M heater coolant supply hose line can be an expensive repair, as it is a specialized part that requires an Audi dealer or a reputable mechanic to install.

2. Time-consuming: The repair process for this part can be time-consuming, as the technician needs to drain the coolant, remove the old hose, install the new one, and refill the coolant.

3. Availability: This specific hose line might not be readily available at local auto parts stores, and you may need to order it from an Audi dealer or a specialized auto parts supplier, which could add to the wait time.

Conclusion:

The Audi 4E0819371M heater coolant supply hose line is an essential component of the cooling system in Audi A8 cars with 4.2L engines. While the repair process can be costly and time-consuming, the benefits of improving coolant flow, preventing leaks, and ensuring safety make it a worthwhile investment for car owners. It is recommended to replace this hose line at the recommended maintenance intervals to avoid potential engine damage and ensure the longevity of the vehicle.

Details:

Part Fitment and Compatibility. Remember LEFT means the Drivers side of vehicle and RIGHT Passengers in our listings.

part #: 4e0819371m prices

  • $62.00-$74.89

specifications radiatoranch:

  • for models: A8, D3
  • for makes: Audi
  • for years: 2004-2010
  • mpn: 4e0819371m
  • part type: Line Heater Supply Hose
  • manufacturer warranty: 30 Day
  • tested: Tested, Cleaned And Inspected
  • fitment type: Direct Replacement

offer radiatoranch:

  • started: January 19, 2026
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • sold: 0

general radiatoranch:

  • condition: Used
  • Car Truck Parts Accessories > Engine Cooling Components > Radiators

shipping radiatoranch:

  • transit: 3-7 Days
  • service: USPS Ground Advantage, FedEx 2Day, FedEx Standard Overnight, USPS Priority Mail
  • cost: $0.00
  • class: Standard, Expedited, One-day
  • type: Calculated
  • carrier: USPS, FedEx

returns radiatoranch:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 30 Days

payments radiatoranch:

  • credit card: Visa
  • wallet: Apple-pay
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seller radiatoranch:

  • # reviews: 86725
  • rating: 99.7%
  • city: Waverly, Minnesota
for models: a8, d3, for makes: audi, for years: 2004-2010, part type: line heater supply hose, manufacturer warranty: 30 day, tested: tested, cleaned and inspected, fitment type: direct replacement,
category: auto parts > car truck parts accessories > engine cooling components > radiators, sku: 11407919112369631,

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