Exhaust› Mufflers and Resonators

BMW

Rear Muffler with Exhaust Flap

$1,493.31

SKU: 18308744801

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Genuine BMW 18308744801 is a direct replacement rear muffler with an exhaust flap. It is designed and manufactured by BMW using reliable materials to ensure long-lasting performance and tolerance for heavy use.

It is offered with the assurance of BMW's factory warranty, ensuring its quality and reliability.
Show original supplier description
The Genuine BMW 18308744801 is a rear muffler equipped with an exhaust flap, designed as a direct replacement part. This genuine BMW part serves as a direct replacement for the original muffler, ensuring proper fitment and function. It is located at the rear of the vehicle and comes with the backing of BMW's factory warranty, providing peace of mind regarding its quality and reliability. Fitment is confirmed for the 2020-2025 BMW 840i Gran Coupe (G16) and the 2020-2025 BMW 840i xDrive Gran Coupe (G16). The part is also referred to by various other names including Exhaust Pipe, Muffler, Tail Pipe, and Exhaust Resonator.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandBMW
Part Number18308744801
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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