

Atmospheric Dump Valve for Audi S4 B9 and Audi S5 B9
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Description
Forge Motorsport Atmospheric Dump Valve for Audi S4 B9, S5 B9 & SQ5 FY is a solenoid-operated billet valve that integrates with the factory electronics while replacing the OEM diaphragm/plastic-piston design. It is intended to improve durability on tuned or standard cars and provide an atmospheric release sound without fault codes when correctly installed.
Key features
- Billet alloy piston-based valve
- Vehicle-specific solenoid operation
- OEM electronic integration
- Designed to withstand additional tuning
- Uprated spring supplied
Vehicle fitment
- Audi S4 B9 (2017-2025)
- Audi S5 B9 (2017-2024)
- Audi SQ5 FY 3.0 TSI (2018-2025)
Forge recommends servicing the valve every three years or 20,000 miles, whichever comes first. A recirculating alternative is available as Forge FMDV13R.
What's included
- FMDV13 valve
- Wiring harness
- Solenoid, bracket and screws
- Uprated blue spring
- Vacuum hose and cable ties
- Instructions
Browse more Forge Motorsport products at Nineteen72 Performance.
More information
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Warranty, Shipping and Returns
Warranty: Products are supplied with the applicable manufacturer warranty.
Shipping: We offer UK and worldwide shipping. Delivery estimates are shown above.
Returns: Eligible unused items can be returned within 14 days in accordance with our returns policy.
Finance Options
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Specifications
- Brand
- Forge Motorsport
- Product type
- Chargepipe & Valves
- SKU:
- FMDV13A-BLK
- Barcode
- 5056721238012
- Colour
- Anodised Black
- Vehicle make
- Audi
- Vehicle model
- S4
- Vehicle variant
- B9 (2017-2025)

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Need help?
Forge Motorsport FAQs
Helpful answers before you order. Need more detail? Our team can help.
How do I confirm this part fits my vehicle?
Check the model, year, engine, chassis and any exclusions in the product description. Select the required option before adding to your basket. The vehicle selector helps narrow your search; contact us if your car has different factory options or existing modifications.
Will I need any other parts?
Check the included components and fitting notes for your engine and current setup. Connections, sensors, pipework or supporting changes may differ between options. Ask us to confirm the requirements for your chosen part.
When will my order arrive?
Select your required option and check the live availability message above. Dispatch is when your order leaves us; delivery takes additional time and depends on the service and destination. If no verified lead time is shown, or you need the item for a fitting appointment or event, contact Nineteen72 Performance before ordering.
What is included in the price?
Check the product description, selected option and stated quantity before ordering. Images may show optional equipment or an example installation. If you need a matching pair, a complete kit or additional hardware, ask us to confirm exactly what is included.
How do I get help before ordering?
Contact Nineteen72 Performance with a link to this product and your question. For vehicle-specific parts, include your model, year, engine and any modifications that may affect compatibility.
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