500303 MAP Rear Heater Core

Review MAP Aluminum Rear Heater Core Direct Fit

Mapco 500303 Rear Heater Core for Select Volkswagen and Audi Models

The Mapco 500303 rear heater core is an essential component in the heating system of select Volkswagen and Audi vehicles. This heater core is designed to provide warmth to the passenger compartment by transferring heat from the engine coolant to the cabin air.

This Mapco heater core is engineered to meet or exceed OEM specifications for fit, form, and function. It is manufactured using high-quality materials, including aluminum fins and copper tubes, to ensure optimal heat transfer and durability. The core's design allows for efficient cooling of the engine coolant, maintaining the optimal operating temperature for optimal engine performance.

- Volkswagen Jetta (MK4) (2001-2004)

- Volkswagen Golf (MK4) (2002-2005)

- Volkswagen New Beetle (1998-2011)

- Audi A3 (8L) (1996-2003)

- Audi A4 (B5) (1996-2000)

Installation of this heater core is relatively straightforward and can be completed as a DIY project for those with some automotive experience. However, for those who prefer professional installation, it is recommended to consult a certified mechanic to ensure proper installation and functioning of the new heater core.

In summary, the Mapco 500303 rear heater core is a high-quality replacement component for select Volkswagen and Audi models. It is engineered to meet or exceed OEM specifications for fit, form, and function, ensuring optimal heat transfer and durability. It is a cost-effective solution for those seeking to repair or upgrade their vehicle's heating system.

Buying a new rear heater core, specifically map number 500303, can be a crucial decision for vehicle owners experiencing heating issues in their cars. To help you make an informed decision, here are some potential pros and cons.

1. Improved Comfort: A faulty heater core can make driving in cold weather uncomfortable. Replacing it with a new one ensures proper heating and enhances overall driving experience.

2. Preventing Further Damage: A malfunctioning heater core can lead to more significant issues if left unattended. By replacing it, you can prevent potential engine damage and save on costly repairs down the line.

3. Enhanced Safety: Proper heating not only ensures comfort but also safety. In freezing temperatures, a functioning heater core can defrost windows, ensuring clear visibility and reducing the risk of accidents.

1. Cost: Replacing a heater core can be an expensive repair, especially if you choose to have a professional do it. The cost includes the price of the new heater core, labor, and potential diagnostic fees.

2. Time Consuming: Depending on your mechanic's schedule and the availability of the specific heater core, the repair process can take several days. If you don't have access to a loaner car, this could be a significant inconvenience.

3. DIY Complexity: Installing a heater core yourself can be a complex process, especially for those without extensive mechanical knowledge. It may require specialized tools and a good understanding of your vehicle's heating system.

Weighing the pros and cons, it's clear that replacing a faulty rear heater core (map number 500303) can provide significant benefits in terms of comfort, safety, and preventing further damage. However, the cost and time commitment may be a deterrent for some. Ultimately, the decision comes down to your personal priorities and budget. If driving comfort and safety are high priorities, replacing the heater core may be worth the investment. If you're on a tight budget or prefer to avoid the time and hassle of the repair, you might consider alternative solutions like driving with the windows open or using portable heaters.

Details:

Units per package: manufacturer part number: 500303. Aluminum rear heater core direct fit: msrp: $83.74.: heater core.

Caution: fitment is for north america vehicles. Number of pieces: condition: new. Features: direct fit.

Material: aluminum. Placement on vehicle: underhood. Position: rear. Tire chains and accessories.

specifications heatercoreco:

• brand: Map
• mpn: 500303
• placement on vehicle: Underhood
• ipn: 91357-98040
• type: Heater Core
• features: Direct Fit
• caution: Fitment Is For North America Vehicles
• position: Rear
• material: Aluminum
• fitment type: Direct Replacement
• modified item: No
• oe/oem part number: Gk3j61a10

offer heatercoreco:

• in stock #: 1
• options: ship-to-home
• price: $64.99
• item condition: New
• availability: in stock
• sold #: 7
• started: march 18, 2026

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• credit card: mastercard
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• transit: 2-6 days
• service: economy
• class: economy
• type: fixed

general heatercoreco:

• category: Auto Parts > Car Truck Accessories > Air Conditioning Heating > Heater Cores

seller heatercoreco:

• rating: 99.9%
• city: portland, oregon
• # reviews: 13639

returns heatercoreco:

• time: 30 days
• policy: returns accepted
• paid by: seller