Genuine BMW
Genuine BMW G80/G81 M3, G82/G83 M4, G87 M2, F97 X3M & F98 X4M S58 OEM Exhaust Valve Actuator
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Spread the cost of your order. Choose your provider at checkout — nothing to set up here.
KLARNA FINANCE
Part 1: How it works
Shop now. Pay later with Klarna.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
Step 1: Add products to your cart and select “Klarna” when you check out
Step 2: Enter a few personal details and you’ll know instantly if you’re approved
Step 3: Klarna will send you an email confirmation and reminders when it’s time to pay and you can manage your orders and payments in the Klarna app.
Part 2: Payments information
Pay in 30 days
Make your purchase today so you can try before you buy. Only pay for what you keep. Pay up to 30 days later. No interest. No fees. No impact to your credit score.
Paying after delivery allows you to try before you buy and is the easiest way to shop online.
- Complete the payment in full after purchase at no added cost.
- Report returns directly in our app and only pay for the items that you keep.
- Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort
You must be 18+ and a UK resident to be eligible for this credit offer. Pay Later Terms and Conditions
Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
Part 3: About Klarna
Pay online or in the app
Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
● Log in online: https://app.klarna.com/login
● Chat with customer service: https://www.klarna.com/uk/customer-service/
Safe and secure
With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
Choose options
BACKORDER - AVAILABLE
Pay later options
Spread the cost of your order. Choose your provider at checkout — nothing to set up here.
KLARNA FINANCE
Part 1: How it works
Shop now. Pay later with Klarna.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
Step 1: Add products to your cart and select “Klarna” when you check out
Step 2: Enter a few personal details and you’ll know instantly if you’re approved
Step 3: Klarna will send you an email confirmation and reminders when it’s time to pay and you can manage your orders and payments in the Klarna app.
Part 2: Payments information
Pay in 30 days
Make your purchase today so you can try before you buy. Only pay for what you keep. Pay up to 30 days later. No interest. No fees. No impact to your credit score.
Paying after delivery allows you to try before you buy and is the easiest way to shop online.
- Complete the payment in full after purchase at no added cost.
- Report returns directly in our app and only pay for the items that you keep.
- Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort
You must be 18+ and a UK resident to be eligible for this credit offer. Pay Later Terms and Conditions
Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
Part 3: About Klarna
Pay online or in the app
Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
● Log in online: https://app.klarna.com/login
● Chat with customer service: https://www.klarna.com/uk/customer-service/
Safe and secure
With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
BACKORDER - AVAILABLE
Pay later options
Spread the cost of your order. Choose your provider at checkout — nothing to set up here.
KLARNA FINANCE
Part 1: How it works
Shop now. Pay later with Klarna.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
Step 1: Add products to your cart and select “Klarna” when you check out
Step 2: Enter a few personal details and you’ll know instantly if you’re approved
Step 3: Klarna will send you an email confirmation and reminders when it’s time to pay and you can manage your orders and payments in the Klarna app.
Part 2: Payments information
Pay in 30 days
Make your purchase today so you can try before you buy. Only pay for what you keep. Pay up to 30 days later. No interest. No fees. No impact to your credit score.
Paying after delivery allows you to try before you buy and is the easiest way to shop online.
- Complete the payment in full after purchase at no added cost.
- Report returns directly in our app and only pay for the items that you keep.
- Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort
You must be 18+ and a UK resident to be eligible for this credit offer. Pay Later Terms and Conditions
Pay in 3 interest-free instalments
Spread the cost of your purchase into 3 interest-free instalments. The first payment is made at point of purchase, with remaining instalments scheduled automatically every 30 days. No interest or fees. Select the Klarna option and enter your debit or credit card information. To check your eligibility, Klarna will perform a soft search with a credit reference agency. This will not affect your credit score.
No interest. No fees. No impact to your credit score.
- A new way to pay that's an alternative to a credit card.
- 3 instalments gives you flexibility to shop without interest or hidden fees. - Not making your payment on time could affect your ability to use Klarna in the future.
- Debt collection agencies are used as a last resort.
You must be 18+ and a UK resident to be eligible for this credit offer. Pay in 3 Terms and Conditions
Part 3: About Klarna
Pay online or in the app
Review your latest purchases and make payments in the Klarna app or online.
● Download the Klarna app: https://www.klarna.com/app
● Log in online: https://app.klarna.com/login
● Chat with customer service: https://www.klarna.com/uk/customer-service/
Safe and secure
With Klarna, you are always covered through Klarna’s Buyer Protection policy. Modern safeguards protect your information to prevent unauthorized purchases.Frequently asked questions
Visit our FAQ (https://www.klarna.com/uk/customer-service/) page to find out more about using Klarna.About Klarna
At Klarna, we have a relentless focus on creating the best shopping experience in the world. We believe payments are so much more than just a way to send money. That’s why our smooth checkout options give you more time and control so you can focus on the things you love.● More than 90 million shoppers are using Klarna.
● 200,000 retailers are working with us worldwide.
● We’re one Europe’s largest banks and we’ve been powering online checkouts for over 15 years.
Please spend responsibly. Borrowing more than you can afford could seriously affect your financial status. Make sure you can afford to make your monthly repayments on time.
R44 Performance Ltd. is not a lender and acts only as an introducer. The credit product is provided by Klarna Bank AB (publ). Credit is only available to permanent UK residents aged 18 and over, depending on their status. Terms and conditions apply. Please note that Pay in 30 days and Pay in 3 instalments are not regulated by the FCA.
Restore the correct operation of your BMW's factory exhaust valve system with the Genuine BMW S58 OEM Exhaust Valve Actuator, part number 18308746829. Designed for a wide range of S58-powered BMW M cars, including the G80/G81 M3, G82/G83 M4, G87 M2, F97 X3M and F98 X4M, this is a genuine replacement for a faulty or damaged original exhaust flap actuator.
The actuator is an electronically controlled component responsible for operating the valve within the exhaust system. Depending on the vehicle's operating conditions and selected driving mode, the actuator opens or closes the exhaust flap as commanded by the vehicle's electronic control systems.
A failed exhaust valve actuator can prevent the flap from operating correctly, potentially leaving it permanently open or closed and affecting exhaust sound or triggering exhaust-valve-related fault codes. Replacing a failed unit with the correct Genuine BMW 18308746829 actuator restores the system using a component manufactured to BMW's original specification.
Key Features
- Genuine BMW OEM exhaust valve actuator
- BMW part number 18308746829
- Designed for S58-powered BMW M models
- Direct replacement for the original factory component
- Electronically operates the factory exhaust flap
- Restores correct exhaust valve functionality
- Manufactured to BMW OEM specifications
- Ideal replacement for a failed, damaged or malfunctioning actuator
- Suitable for selected G80/G81 M3, G82/G83 M4, G87 M2, F97 X3M and F98 X4M models
What Does the BMW Exhaust Valve Actuator Do?
Modern BMW M exhaust systems use electronically controlled exhaust flaps to alter the route and flow of exhaust gases through the rear silencer.
The exhaust valve actuator, sometimes referred to as an exhaust flap actuator or exhaust valve motor, receives commands from the vehicle's electronic control system and physically moves the exhaust flap between its required positions.
On S58-powered BMW M models, operation of the exhaust valves can vary depending on factors such as engine load, engine speed and selected driving settings. Opening the valve can provide a more direct exhaust path and a more pronounced exhaust note, while closing it helps reduce exhaust volume under appropriate driving conditions.
The actuator is therefore an important part of maintaining the factory operation of your BMW M exhaust system.
Signs of a Faulty Exhaust Valve Actuator
Like any electronic and mechanical component exposed to heat, moisture and road debris, an exhaust valve actuator can eventually develop a fault.
Common symptoms can include:
- Exhaust flap remaining permanently open or closed
- Exhaust sound no longer changing as expected
- Rattling or abnormal noises from the exhaust valve area
- Actuator failing to move the exhaust flap
- Exhaust valve or actuator-related fault codes
- Warning messages depending on the vehicle and nature of the fault
Before replacing the actuator, we recommend confirming the cause of the problem, as faults can also originate from the exhaust flap mechanism, wiring, connectors or other associated components.
Why Choose a Genuine BMW Exhaust Valve Actuator?
The exhaust valve actuator operates as part of an electronically controlled factory system, making correct compatibility and operation particularly important.
Choosing Genuine BMW part number 18308746829 ensures you're replacing the original component with an OEM BMW part designed for the relevant exhaust system and vehicle electronics.
Benefits of choosing Genuine BMW include:
- Original BMW component
- Correct electrical connection and operation
- Designed specifically for compatible BMW exhaust systems
- Factory-quality construction
- Direct replacement for the original actuator
- No need to rely on an unknown aftermarket equivalent
For owners looking to repair rather than modify their factory exhaust valve system, a Genuine BMW actuator is the straightforward replacement solution.
S58 Engine Compatibility
This exhaust valve actuator is used across several BMW M vehicles powered by the 3.0-litre S58 twin-turbocharged straight-six engine.
Compatible applications include:
- BMW G80 M3
- BMW G81 M3 Touring
- BMW G82 M4
- BMW G83 M4 Convertible
- BMW G87 M2
- BMW F97 X3M
- BMW F98 X4M
This can include standard, Competition and selected special-edition derivatives where BMW part number 18308746829 is specified.
As BMW part compatibility can vary according to model year, market and vehicle specification, we recommend confirming the part number against your vehicle before ordering.
Genuine BMW Part Number
BMW OEM Part Number: 18308746829
Also commonly searched as:
18 30 8 746 829
When replacing an existing actuator, checking the BMW part number is the most reliable way to confirm that you are ordering the correct replacement component.
Why Buy From R44 Performance?
R44 Performance specialises in BMW performance parts, Genuine BMW components, servicing parts and aftermarket upgrades, with extensive knowledge of modern BMW M platforms and the S58 engine.
When you purchase your Genuine BMW exhaust valve actuator from R44 Performance, you'll benefit from:
- 100% Genuine BMW component
- Correct OEM BMW part number
- Specialist knowledge of S58-powered BMW M models
- Support with product and vehicle compatibility
- Fast UK and worldwide shipping
- Secure, carefully packaged delivery
- Access to an extensive range of BMW exhaust and replacement components
- Trusted by BMW enthusiasts around the world
Whether you're repairing a faulty exhaust valve on a G80 M3, G81 M3 Touring, G82/G83 M4, G87 M2, F97 X3M or F98 X4M, Genuine BMW exhaust valve actuator 18308746829 provides the correct OEM replacement for restoring factory exhaust flap operation.
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.