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Genuine VW/Audi 078109243S - Engine Timing Belt Tensioner Pulley
Product Overview
The Genuine VW/Audi Engine Timing Belt Tensioner Pulley part number 078109243S is essential for maintaining the performance and reliability of your Audi's engine. This tensioner pulley is designed to meet OEM specifications, ensuring a precise fit and dependable operation. Proper tensioning of timing belts is crucial for optimal engine functionality and longevity, making this part a necessary upgrade or replacement for your vehicle.
Manufactured from high-quality materials, the timing belt tensioner pulley is engineered to endure extreme engine conditions, providing exceptional durability and performance. Whether you are a DIY enthusiast or a professional technician, you can rely on this component to restore your Audi's engine to its best performance level.
Choose Genuine VW/Audi078109243S for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Genuine VW/Audi078109243S is equivalent to or replaces the following part numbers: 078109243A, 078109243B, 078109243C
Vehicle Compatibility
- Audi Allroad Quattro 2.7 V6 (2001–2005)
- Audi A6 2.7 V6 (2001–2005)
- Audi A6 Quattro 2.7 V6 (2001–2005)
- Audi A4 2.8 V6 (2000–2001)
- Audi A4 Quattro 2.8 V6 (2000–2001)
- Audi A4 Quattro Avant 2.8 V6 (2000–2001)
- Audi S4 2.7 V6 (2000–2001)
- Audi A6 Quattro Avant 2.8 V6 (2000–2001)
- Audi A4 Avant 2.8 V6 (1998–2000)
- Audi A6 2.8 V6 (1998–2001)
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
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- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
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Frequently Asked Questions
What does the Genuine VW/Audi 078109243S Engine Timing Belt Tensioner Pulley do?
The timing belt tensioner pulley is responsible for maintaining the correct tension on the timing belt, which is essential for synchronizing the engine's components. This part ensures that the timing belt operates smoothly, preventing slippage and potential engine damage.
How do I know if my Engine Timing Belt Tensioner Pulley needs replacement?
Common signs that the timing belt tensioner pulley may need replacement include unusual engine noise, difficulty starting the engine, misfiring, or a check engine light indicating timing issues. If you notice any of these symptoms, it's advisable to inspect this component.
Can I install the Genuine VW/Audi 078109243S myself?
This timing belt tensioner pulley can be installed by DIY enthusiasts with basic mechanical skills. However, it is recommended to consult a repair manual and follow proper procedures to ensure correct installation and avoid potential engine damage.
What are the symptoms of a faulty Engine Timing Belt Tensioner Pulley?
Symptoms of a faulty timing belt tensioner pulley include excessive noise from the engine compartment, timing belt slippage, and engine misfires. If you experience any of these issues, it is advisable to have the timing belt tensioner pulley inspected and potentially replaced.
Why should I choose Genuine VW/Audi for my Engine Timing Belt Tensioner Pulley needs?
Choosing Genuine VW/Audi ensures that you are getting a high-quality, factory-correct replacement part that meets OEM standards. Order Genuine VW/Audi078109243S today for a factory-correct replacement that restores safety and performance.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandGenuine VW/Audi
- ManufacturerGenuine VW/Audi
- MPN078109243S
- Part TypeEngine Timing Belt Tensioner Pulley
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1997 | Audi | A4 | Base (2.8 V6 GAS) | Engine: AHA |
| 1998 | Audi | A4 | Avant (2.8 V6 GAS) | |
| 1998 | Audi | A4 | Base (2.8 V6 GAS) | |
| 1998 | Audi | A4 Quattro | Base (2.8 V6 GAS) | |
| 1998 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | |
| 1998 | Audi | A6 | Base (2.8 V6 GAS) | |
| 1998 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 1999 | Audi | A4 | Base (2.8 V6 GAS) | |
| 1999 | Audi | A4 Quattro | Base (2.8 V6 GAS) | |
| 1999 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | |
| 1999 | Audi | A6 | Base (2.8 V6 GAS) | |
| 1999 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 1999 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 2000 | Audi | A4 | Base (2.8 V6 GAS) | |
| 2000 | Audi | A4 Quattro | Base (2.8 V6 GAS) | Engine: ATQ |
| 2000 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | |
| 2000 | Audi | A6 | Base (2.8 V6 GAS) | |
| 2000 | Audi | A6 Quattro | Base (2.7 V6 GAS) | |
| 2000 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 2000 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 2000 | Audi | S4 | Base (2.7 V6 GAS) | |
| 2001 | Audi | A4 | Base (2.8 V6 GAS) | |
| 2001 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | |
| 2001 | Audi | A4 Quattro | Base (2.8 V6 GAS) | |
| 2001 | Audi | A6 | Base (2.8 V6 GAS) | |
| 2001 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | |
| 2001 | Audi | A6 Quattro | Base (2.7 V6 GAS) | |
| 2001 | Audi | A6 Quattro | Base (2.8 V6 GAS) | |
| 2001 | Audi | Allroad Quattro | Base (2.7 V6 GAS) | |
| 2001 | Audi | S4 | Avant (2.7 V6 GAS) | |
| 2001 | Audi | S4 | Base (2.7 V6 GAS) | |
| 2002 | Audi | A6 Quattro | Base (2.7 V6 GAS) | |
| 2002 | Audi | Allroad Quattro | Base (2.7 V6 GAS) | |
| 2002 | Audi | S4 | Avant (2.7 V6 GAS) | |
| 2002 | Audi | S4 | Base (2.7 V6 GAS) | |
| 2003 | Audi | A6 Quattro | Base (2.7 V6 GAS) | |
| 2003 | Audi | Allroad Quattro | Base (2.7 V6 GAS) | |
| 2004 | Audi | A6 Quattro | Base (2.7 V6 GAS) | |
| 2004 | Audi | Allroad Quattro | Base (2.7 V6 GAS) | |
| 2005 | Audi | Allroad Quattro | Base (2.7 V6 GAS) |
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.




