Replacement downpipe - To be used in various B6 A4 1.8T Milltek Exhaust Systems - SSXAU305, SSXAU033, SSXAU089, SSXAU510, SSXAU509, SSXAU304
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Manufactured from T304 stainless steel, hand TIG welded and back purged to ensure years of reliable performance
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Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow.
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Brand:
ES#:
4477611
Mfg#:
48-36410-YC
Ships in 1 Business Day
20% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$1441.99
This product was last offered at the strikethrough price on 06-04-2026
Stainless steel 3" downpipe with high flow catalytic converter designed to work with 3" cat-back exhaust systems.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For use with Milltek cat-back exhaust only
An upgraded downpipe is a must-have item for any owner looking to make serious power from their vehicle.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For 4Motion models only
3.0" T304 Stainless system produces gains of up to 15hp.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles up through 2020
Delivers more power, especially in the low and mid rev range while adding a deep sporty sound.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles up through 2020
Seals the turbocharger to the catalytic converter
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Featuring a 200 cell Hi-Flow Race Cat and OE connecting pipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Designed to be fitted with OE exhaust system
A perfect fit, smooth exhaust flow, and excellent sound
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Stage 2 software is required to avoid check engine light.
Contains all of the hardware you need to install a new catalytic converter on your A4
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Brand:
ES#:
2575492
Mfg#:
1H0253115DKT1
In Stock
ON SALE!
SAVE 21%
$69.99
This product was last offered at the strikethrough price on 05-02-2026
The downpipe carries exhaust gas from the hot side of your turbo to the rest of the exhaust system. Replace a faulty catted downpipe with an OEM downpipe or upgrade for more performance with our selection of aftermarket performance downpipe options.
Lifetime Replacement
