Mishimoto B58 Performance Radiator | MMRAD-B58-20
Mishimoto B58 Performance Radiator
Improve engine cooling capacity with the Mishimoto Performance Radiator for compatible BMW B58 applications. The upgraded radiator is designed as a higher-performance replacement for the factory cooling system and is intended for street and modified vehicles that demand greater thermal capacity.
Features: application-specific construction, increased cooling capability and direct-replacement design for compatible B58 platforms.
Fitment: BMW B58 applications. Confirm exact chassis, model year and transmission configuration before ordering.
We stand behind the quality of the products we carry.
Most items sold by FMS Auto Performance, LLC are backed by manufacturer warranties. Because coverage varies by brand, all warranty claims are handled directly through the manufacturer.
While we don’t process warranty claims ourselves, our team is happy to help point you in the right direction and provide any documentation you may need.
Customers are responsible for verifying vehicle compatibility before purchasing.
While FMS Auto Performance, LLC makes every effort to provide accurate fitment information, we do not guarantee compatibility for all vehicles, modifications, or configurations.
Fitment may vary based on factors including but not limited to:
Trim level
Engine type
Production date
Aftermarket modifications
If you are unsure about compatibility, we strongly recommend contacting us before placing your order.
Products that have been installed, modified, or used are not eligible for return due to incorrect fitment.
Some performance products are subject to California emissions regulations and manufacturer sales restrictions. As a result, this item may not be available for purchase or shipment within California.
If you have questions about this restriction, need help verifying fitment, or are looking for a CARB-compliant alternative, our team is here to help.
FMS Auto Performance📞 (559) 740-7953🌐 www.fmsautoperformance.com
CARB EO Status: Please refer to the product specifications for the applicable CARB Executive Order (EO) number, if available. Products without a CARB EO may not be legal for use on emissions-controlled vehicles in California.
Returns & Exchanges
We want you to be fully satisfied with your purchase from FMS Auto Performance, LLC.
Returns and exchanges are accepted within 30 days of delivery. Approved returns are eligible for a refund minus any applicable shipping costs and payment processing fees (including PayPal fees).
Some products may qualify for repair or replacement under the manufacturer’s warranty, at the discretion of the manufacturer.
Return Authorization (RMA Required)
All returns must be approved before being sent back.
A Return Merchandise Authorization (RMA) is required for all returns
The RMA number must be clearly written on the outside of the package
Packages without an RMA will be refused and returned to sender
Non-returnable items include:
Installed or used products
Electrical components
Wheel spacers
COBB Accessport devices
Special order or custom items (including hardware, hoses, fittings, etc.)
Return shipping is the responsibility of the customer and must be shipped Delivered Duty Paid (DDP).
To request an RMA, please contact us with:
Order number
Reason for return
Full contact details
Return Conditions
To be eligible for a return:
Item must be unused and uninstalled
Must be in original packaging
Must include all hardware, accessories, and components
Proof of purchase is required
FMS Auto Performance reserves the right to request photos or additional verification before approving a return.
If returned items are found to be used, installed, or incomplete, we may deny the return or apply additional fees.
Original shipping charges are non-refundable.
Restocking Fees
A 15% restocking fee applies to all approved returns and canceled orders
Fees may increase up to 100% depending on the condition of the returned item
Items deemed unusable will be returned to the customer with no refund issued
Refund Processing
Refunds are issued after inspection and approval
Please allow 12–14 business days for refunds to process
Refunds will be issued via the original payment method, store credit, or company check (determined by FMS)
Damaged or Missing Items
If your order arrives damaged or incomplete:
Notify us within 5 business days of delivery
All damage claims must be filed directly with the shipping carrier
Keep all packaging materials for inspection
FMS Auto Performance does not file shipping claims on behalf of customers.
Contact Us
For return requests or questions, please contact our team with your order details and we’ll get you taken care of.
⚠️WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands.
For more information see: www.P65Warnings.ca.gov/motor-vehicle-parts