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Audi 4M SQ8 Quattro 4.0T

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Audi 4M SQ8 Quattro 4.0T Exhaust Parts & Accessories

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Valved Cat-back Exhaust System With OE Exhaust Trim

ES#4858687 - SSXAU1027 - Valved Cat-back Exhaust System With OE Exhaust Trim - Increase the sound of your ride without needing to cut your OE exhaust system - Milltek Sport - Audi

Increase the sound of your ride without needing to cut your OE exhaust system

Brand:
Milltek Sport - Corporate Logo
ES#:
4858687
Mfg#:
SSXAU1027
Ships on Oct 21, 2026
ON SALE! SAVE 10%
$6326.99

This product was last offered at the strikethrough price on
09-18-2026

$5694.22 USD

Large Bore Downpipes And Hi-Flow Sports Cats

Heat wrapped to keep temperatures down. 3.00" outlet Requires Stage 2 ECU Remap
OPF Models Only

Brand:
Milltek Sport - Corporate Logo
ES#:
4349792
Mfg#:
SSXAU901
Ships on Oct 21, 2026
ON SALE! SAVE 10%
$5098.00

This product was last offered at the strikethrough price on
09-18-2026

$4588.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Downpipes With High Flow Cats

ES#4419989 - EXH-DP-0048-CAT - Downpipes With High Flow Cats - This is the best bolt-on modification that will increase exhaust flow, improve turbocharger spool time and drastically change the sound of your sport SUV. - CTS - Audi

This is the best bolt-on modification that will increase exhaust flow, improve turbocharger spool time and drastically change the sound of your sport SUV. Requires Stage 2 ECU Remap

Brand:
CTS - Corporate Logo
ES#:
4419989
Mfg#:
EXH-DP-0048-CAT
Special Order: No Guaranteed ETA
ON SALE! SAVE 15%
$1899.99

This product was last offered at the strikethrough price on
09-29-2026

$1614.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sound Enhancing Resonator Kit

ES#4136103 - 4M0071904 - Sound Enhancing Resonator Kit - It's the symphony of high-performance Audi vehicles across the globe. - Genuine Volkswagen Audi - Audi

It's the symphony of high-performance Audi vehicles across the globe.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4136103
Mfg#:
4M0071904
In Stock
4% off MSRP

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

$1500.99

This product was last offered at the strikethrough price on
09-30-2026

$1437.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#3015657 - 8W0253115D - Exhaust Gasket - Priced Each - Between the exhaust manifold and downpipe, requires 2 - Genuine Volkswagen Audi - Audi

Between the exhaust manifold and downpipe, requires 2

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3015657
Mfg#:
8W0253115D
In Stock
$6.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo 4M Audi SQ7/SQ8/RSQ8 Resonator Delete

ES#4908532 - CTS-EXH-TP-0027 - CTS Turbo 4M Audi SQ7/SQ8/RSQ8 Resonator Delete - This upgrade delivers a deeper, throatier exhaust tone while maintaining drivability and minimizing drone! - CTS - Audi

This upgrade delivers a deeper, throatier exhaust tone while maintaining drivability and minimizing drone!

Brand:
CTS - Corporate Logo
ES#:
4908532
Mfg#:
CTS-EXH-TP-0027
Special Order: No Guaranteed ETA
ON SALE! SAVE 15%
$899.99

This product was last offered at the strikethrough price on
09-29-2026

$764.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3.0" Stainless Steel 3-Bolt Flange - Priced Each

ES#4007189 - 028092ecs10aKT - 3.0" Stainless Steel 3-Bolt Flange - Priced Each - Universal 3-Bolt flange for your custom exhaust project. Extra thick 10mm flange to avoid warping. - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Universal 3-Bolt flange for your custom exhaust project. Extra thick 10mm flange to avoid warping. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4007189
Mfg#:
028092ECS10AKT
In Stock
ON SALE! SAVE 25%
$27.99

This product was last offered at the strikethrough price on
06-13-2026

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Manifold Gasket - Priced Each

ES#3707302 - 0P2253039C - Exhaust Manifold Gasket - Priced Each - Fits the left and right side - Genuine Volkswagen Audi - Audi

Fits the left and right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3707302
Mfg#:
0P2253039C
Ships in 1 day
9% off MSRP

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

$74.99

This product was last offered at the strikethrough price on
08-31-2026

$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Manifold Gasket - Priced Each

ES#5340925 - 0P2253039C - Exhaust Manifold Gasket - Priced Each - Fits the left and right side - Elring - Audi

Fits the left and right side 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340925
Mfg#:
0P2253039C
Ships on Oct 30, 2026
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#4745717 - 8W0253115D - Exhaust Gasket - Priced Each - Between the exhaust manifold and downpipe, requires 2 - Elring - Audi

Between the exhaust manifold and downpipe, requires 2 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4745717
Mfg#:
8W0253115D
Special Order: No Guaranteed ETA
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
Scratch and Dent Item

Sound Enhancing Resonator Kit *Scratch And Dent*

ES#5504910 - 4M0071904SD - Sound Enhancing Resonator Kit *Scratch And Dent* - ***Please see photos and description prior to ordering, all sales final.*** - Scratch & Dent - Audi

***Please see photos and description prior to ordering, all sales final.*** ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product!

Brand:
Scratch & Dent - Corporate Logo
ES#:
5504910
Mfg#:
4M0071904SD
In Stock
ON SALE!
$330.99 USD
Free Shipping
on orders $49 and up

Performance High Flow Downpipes With Sport Cats

These downpipes are fabricated with a larger diameter than standard OEM parts, meaning that there is significantly more space for more gas to exit the engine and pass through, increasing efficiency. Requires Stage 2 ECU Remap
For Non OPF / GPF Equipped Models

Brand:
Milltek Sport - Corporate Logo
ES#:
4418931
Mfg#:
SSXAU956
Ships on Oct 21, 2026
ON SALE! SAVE 10%
$5987.99

This product was last offered at the strikethrough price on
09-18-2026

$5388.95 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Flow Downpipes

Gain up to 80hp and 90flb of torque with these downpipes. Requires Stage 2 ECU Remap

Brand:
VF Engineering - Corporate Logo
ES#:
4507866
Mfg#:
VF.AUD.SQ8.SC
Ships on Oct 16, 2026
$4695.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Charger Exhaust Manifold - Cylinders 5-8

Fix your leaking or restricted exhaust

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3693706
Mfg#:
0P2253033A
Ships in 6 Business Days
6% off MSRP

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

$1192.99

This product was last offered at the strikethrough price on
08-31-2026

$1117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Charger Exhaust Manifold - Cylinders 1-4

Fix your leaking or restricted exhaust

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3693707
Mfg#:
0P2253034A
Ships in 6 Business Days
6% off MSRP

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

$1192.99

This product was last offered at the strikethrough price on
08-31-2026

$1117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Performance Downpipes

ES#4781307 - UH078-EXA - Unitronic Performance Downpipes - Bolt-on upgrade, designed to optimally eliminate unwanted restrictions in the factory downpipes, reduce turbo lag, and enhance the exhaust note. - Unitronic - Audi Porsche

Bolt-on upgrade, designed to optimally eliminate unwanted restrictions in the factory downpipes, reduce turbo lag, and enhance the exhaust note.

Brand:
Unitronic - Corporate Logo
ES#:
4781307
Mfg#:
UH078-EXA
Back Ordered
$4849.99 USD
Free Shipping

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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