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BMW G20 M340i B58 3.0L

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BMW G20 M340i B58 3.0L Exhaust Parts & Accessories

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Downpipe / Catalytic Converter Installation Kit

ES#4780568 - 18328612537KT4 - Downpipe / Catalytic Converter Installation Kit - Everything you need to install a new downpipe/catalytic converter. - Genuine BMW - BMW

Everything you need to install a new downpipe/catalytic converter. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
4780568
Mfg#:
18328612537KT4
In Stock
$110.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Downpipe with Sport Catalytic Converter

ES#3236337 - 524241 - Downpipe with Sport Catalytic Converter - Down pipe with 200 cell catalytic converter - Supersprint - BMW

Down pipe with 200 cell catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3236337
Mfg#:
524241
Ships on Oct 9, 2026
$2940.00 USD
Free Shipping

Racing Dynamics Catted Downpipe

ES#4460574 - 1301058360 - Racing Dynamics Catted Downpipe - Free up your exhaust system and add more power! - Racing Dynamics - BMW

Free up your exhaust system and add more power! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racing Dynamics - Corporate Logo
ES#:
4460574
Mfg#:
1301058360
In Stock
Limited Qty Sale
$1045.00

This product was last offered at the strikethrough price on
05-18-2026

$950.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M Performance Muffler

ES#4056283 - 18302464492 - M Performance Muffler - Genuine BMW M Performance - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW M Performance - Corporate Logo
ES#:
4056283
Mfg#:
18302464492
In Stock
2% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$2830.00

This product was last offered at the strikethrough price on
07-07-2026

$2769.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Cat Back Exhaust System

ES#4759473 - SSXBM127 - Performance Cat Back Exhaust System - Enhance the sound of your BMW's exhaust with this exhaust system from Milltek Sport - Milltek Sport - BMW

Enhance the sound of your BMW's exhaust with this exhaust system from Milltek Sport affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4759473
Mfg#:
SSXBM127
Ships in 3 Business Days
ON SALE!
Starting at $2481.65 USD
Customize

Down pipe with Race Catalytic Converter

ES#3643830 - 524221 - Down pipe with Race Catalytic Converter - Down pipe with 100 cell catalytic converter - Supersprint - BMW

Down pipe with 100 cell catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3643830
Mfg#:
524221
Ships in 4 Business Days
$2460.00 USD
Free Shipping

MAD Exhaust Valve Controller Essential

ES#5426055 - MAD-144 - MAD Exhaust Valve Controller Essential - Manually control muffler valve funtions with the click of a button with this plug and play kit - MAD - BMW

Manually control muffler valve funtions with the click of a button with this plug and play kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with electronic valves only

Brand:
MAD - Corporate Logo
ES#:
5426055
Mfg#:
MAD-144
Ships in 7 Business Days
$159.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

G20/G22 M340/M440 Performance Valved Cat Back-Exhaust & Carbon Fiber Intake System

ES#4876124 - 024779LAEIEBKT - G20/G22 M340/M440 Performance Valved Cat Back-Exhaust & Carbon Fiber Intake System - Transform the power and sound of your M340i! - Enthusiast Bundles - BMW

Transform the power and sound of your M340i! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876124
Mfg#:
024779LAEIEBKT
Ships on Jul 27, 2026
Auto Notify
ON SALE! SAVE 21%
$2596.99

This product was last offered at the strikethrough price on
05-05-2026

$2049.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Muffler Clamp - 80mm

ES#3178430 - 18308635798 - Muffler Clamp - 80mm - Clamp found on the front muffler connecting to the downpipe - Genuine BMW - BMW

Clamp found on the front muffler connecting to the downpipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
3178430
Mfg#:
18308635798
In Stock
14% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$47.33

This product was last offered at the strikethrough price on
07-07-2026

$40.70 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Actuator Drive, Exhaust Flap

ES#4158672 - 18308686640 - Actuator Drive, Exhaust Flap - Genuine BMW - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
4158672
Mfg#:
18308686640
Ships in 3 Business Days
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$165.99

This product was last offered at the strikethrough price on
07-07-2026

$151.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valved Axle-Back Exhuast With Stainless Brushed Tips

ES#4487377 - 11-089 - Valved Axle-Back Exhuast With Stainless Brushed Tips - Get the exhaust growl your car should have came with from the factory! - Active Autowerke - BMW

Get the exhaust growl your car should have came with from the factory! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Active Autowerke - Corporate Logo
ES#:
4487377
Mfg#:
11-089
Ships on Jul 23, 2026
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1999.00

This product was last offered at the strikethrough price on
07-07-2026

$1899.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catback Exhaust System - Carbon Tips

ES#4759961 - MAD-5066 - Catback Exhaust System - Carbon Tips - Transform the sound and performance of your M340i/M440i! - MAD - BMW

Transform the sound and performance of your M340i/M440i! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MAD - Corporate Logo
ES#:
4759961
Mfg#:
MAD-5066
Ships in 7 Business Days
$1899.00 USD

AWE Track Edition Cat-Back Exhaust System

ES#4147598 - 3020G20M340 - AWE Track Edition Cat-Back Exhaust System - Free up power and unleash your BMW's naturally aggressive B58 exhaust tone! - AWE - BMW

Free up power and unleash your BMW's naturally aggressive B58 exhaust tone! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AWE - Corporate Logo
ES#:
4147598
Mfg#:
3020G20M340
Ships on Jul 27, 2026
Starting at $1845.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

G20 M340i Performance Valved Cat-Back Exhaust & Gloss Black Diffuser

ES#4876615 - 024779LAEBKT - G20 M340i Performance Valved Cat-Back Exhaust & Gloss Black Diffuser - Transform the power, sound, and aesthetics of your M340i! - Enthusiast Bundles - BMW

Transform the power, sound, and aesthetics of your M340i! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876615
Mfg#:
024779LAEBKT
Ships on Jul 27, 2026
Auto Notify
ON SALE! SAVE 18%
$2199.94

This product was last offered at the strikethrough price on
05-05-2026

$1799.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Catback Exhaust System - Black Tips

Transform the sound and performance of your M340i/M440i! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MAD - Corporate Logo
ES#:
4766097
Mfg#:
MAD-5066BL
In Stock
ON SALE! SAVE 15%
$1899.00

This product was last offered at the strikethrough price on
05-02-2026

$1614.15 USD

Turner Motorsport Double Wall Slash Cut Exhaust Tip - 2.5 Inlet 3.0 OD - Stepped Right - Brushed Stainless

ES#4146865 - 026732TMS06-02 - Turner Motorsport Double Wall Slash Cut Exhaust Tip - 2.5 Inlet 3.0 OD - Stepped Right - Brushed Stainless - Right - Brushed Stainless Slash Cut Exhaust Tip - 2.5 Inlet - 3.0 OD - Turner Motorsport - BMW MINI

Right - Brushed Stainless Slash Cut Exhaust Tip - 2.5 Inlet - 3.0 OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4146865
Mfg#:
026732TMS06-02
In Stock
ON SALE! SAVE 26%
$125.99

This product was last offered at the strikethrough price on
05-02-2026

$92.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Exhaust Parts & Accessories

From stock exhaust system repairs to polished stainless steel performance exhaust, we have exhaust pipes, mufflers, resonators, and catalytic converters from the most respected suppliers in the business. Go loud, stay soft, look good with exhaust parts and systems from ECS Tuning.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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