Subtotal:$0.00
![]() |
Genuine VW/Audi 7H0820749 - A/C Refrigerant Pressure Sensor O-Ring
O-Ring (A/C Line) 7H0820749
Product Overview
The Genuine VW/Audi O-Ring (A/C Line) is a crucial component for maintaining the efficiency of your vehicle's air conditioning system. This high-quality O-ring, with the Manufacturer Part Number: 7H0820749, is designed specifically for Audi and VW vehicles, ensuring a reliable seal that prevents refrigerant leaks.
Product Description
An O-ring, also known as a packing or toric joint, is a mechanical gasket shaped like a torus. It is a loop of elastomer with a round cross-section, engineered to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. This O-ring is suitable for both static and dynamic applications, making it versatile for various uses within your vehicle.
O-rings are among the most common seals used in machine design due to their cost-effectiveness, ease of manufacture, reliability, and simple mounting requirements. They are capable of sealing significant pressure, ensuring your vehicle operates smoothly.
Why Choose eEuroparts.com?
At eEuroparts.com, we have been the trusted source for European car parts since 2000. Heres why you should choose us:
- Fast Shipping: We ensure your parts arrive quickly so you can get back on the road.
- Accurate Cataloging: Our extensive catalog makes finding the right parts simple and straightforward.
- Honest Pricing: We offer transparent pricing with no hidden fees, providing you with the best value for your money.
- Deep Industry Expertise: With over 25 years of experience, we understand European vehicles and their specific needs.
Cross Reference Numbers
Other part numbers associated with this O-ring include:
- 7H0820749
FAQ
What is the function of the O-ring in the A/C system?
The O-ring seals the connection points in the A/C system, preventing refrigerant leaks and ensuring optimal performance of the air conditioning system.
Is this part compatible with my vehicle?
This O-ring is designed for use in various Audi and VW models. Please refer to your vehicle's specifications or consult with us for compatibility confirmation using our vehicle selector tool.
What should I do if my A/C system is not working properly?
If your A/C system is not functioning well, it may be due to a failing O-ring leading to refrigerant leaks. Consider checking for diagnostic trouble codes that may indicate low refrigerant levels.
How do I install the O-ring?
Installation involves removing the A/C line and replacing the old O-ring with the new one. Ensure a proper seal before reassembling the components. Always consult professional repair resources or expert documentation for detailed instructions.
What DTCs should I be aware of related to A/C system failures?
Common diagnostic trouble codes related to A/C failures may indicate issues that could be resolved by replacing the O-ring. Consult your vehicle's service documentation for more information.
- BrandGenuine VW/Audi
- ManufacturerGenuine VW/Audi
- MPN7H0820749
- Part TypeA/C Refrigerant Pressure Sensor O-Ring
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2014 | Audi | Q7 | TDI Prestige (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
| 2014 | Audi | Q7 | TDI Premium Plus (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
| 2014 | Audi | Q7 | TDI Premium (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
| 2014 | Audi | Q7 | Premium Plus (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2014 | Audi | Q7 | Premium (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2014 | Audi | Q7 | Prestige (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | TDI Premium Plus (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | Premium (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | TDI Premium (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | Premium Plus (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | Prestige (3.0 V6 GAS) | Notes: 17.2 x 1.82mm |
| 2015 | Audi | Q7 | TDI Prestige (3.0 V6 DIESEL) | Notes: 17.2 x 1.82mm |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.




