SKU: 86862226203

034Motorsport High Flow Performance Downpipe - Audi A4 B5 & Audi B6 1.8T - 034-105-4021

Sale price$447.75 Regular price$497.50
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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

034Motorsport High Flow Performance Downpipe - Audi A4 B5 & Audi B6 1.8T - 034-105-4021034 Motorsport High Flow Performance Downpipe Audi A4 B5 & Audi B6 1. 8T 034 105 4021 034Motorsport High Flow Catalytic Converters are designed to replace the restrictive factory catalytic converter, and allow for quicker spool while increasing horsepower and torque throughout the powerband. We construct them from stainless steel tubing, and utilize a high performance 250 cell stainless steel matrix cat. They feature precision flanges to prevent

034 Motorsport - High Flow Performance Downpipe - Audi A4 B5 & Audi B6 1.8T - 034-105-4021 

034Motorsport High-Flow Catalytic Converters are designed to replace the restrictive factory catalytic converter, and allow for quicker spool while increasing horsepower and torque throughout the powerband.

We construct them from stainless steel tubing, and utilize a high-performance 250-cell stainless-steel-matrix cat. They feature precision flanges to prevent warping and expansion, factory-correct exhaust hanger location, and 2 oxygen sensor bungs in the proper locations for the factory sensors. Full 3" tubing is used throughout.

Complete drop-in upgrade; will bolt up to any stock/stock-fit turbo and stock/stock-fit exhaust. Professionally assembled in-house, TIG-welded.

Fits both Manual and Automatic transmissions.

Features:

  • Stainless Steel Tubing
  • TIG Welded
  • Application-Specific Flanges
  • Factory Oxygen Sensor and Exhaust Hanger Placement
  • Installation Hardware Included!
  • Dyno-Proven Horsepower and Torque Gains!
  • We've seen gains of over +26 WTQ and +15WHP on our dyno on stock turbo tunes.
Fitment:
  • 1997 - 2001 Audi A4 1.8T (B5)
  • 2002 - 2005 Audi A4 1.8T (B6)
  • 1997 - 2005 Volkswagen Passat 1.8T (B5/B5.5)

*** Direct bolt-in for OEM cat-back exhaust, or aftermarket cat-back exhaust systems designed to fit with the OEM catalytic converter. Will fit 4Motion/Quattro and FWD B5/B6 Audi A4 1.8T, and B5/B5.5 Volkswagen Passat 1.8T models equipped with manual, Tiptronic, or CVT transmissions***

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86862226203

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4.7 ★★★★★
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TallerThanAverage
Lowell, US
★★★★★ 5
Gorgeous blue color, fits me very well, nicely made and comfortable
Size: Large, Color: Dusty Blue, Size: Large, Color: Dusty Blue
I'm 6'1" 180lbs, sleeve normally 34" and neck 16", and this fits me pretty much perfectly. The material looks really good, I find this particular shade of blue (pattern) to just look really cool. Slightly darker than a typical men's blue shirt, with a slight bit of sheen. Its a medium thickness fabric, not flimsy feeling at all. I find this comfortable. Its smooth to the touch although I always would wear an undershirt personally. Claims to be Italian design? The cut to me seems to be a very standard look, no frills but "sharp" to my eye. The packaging did a good job of protecting the shirt, though it did show up with some extra creases. But that doesn't really matter since it would have needed an ironing before first wearing it regardless. And I do appreciate that the packaging was not excessively wasteful of plastic etc. I haven't worn it a zillion times yet so I can't comment on longevity. Given the price around 22 bucks I'd say this is a good value. Not sure why this color was slightly more expensive (10%) than white or regular blue. Review for "Alimens & Gentle Mens Oxford Shirts Stretch Long Sleeve Dress Shirt for Men Casual Business Work Solid Button Down Shirts"
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Reviewed in the United States on January 24, 2026
M
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Michael Kulp
Port Orchard, US
★★★★★ 5
Highly Recommended Dress Shirt
Fit Type: Regular Fit, Color: White, Size: Medium
Honestly, I Love It. Fits Great, Neck Isn't Too Tight Like Most Shirts, And It's Comfortable. It Is 100% Cotton, So Dont Forget To Iron It Before Wearing It. High Quality Dress Shirt. Highly Recommended.
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Reviewed in the United States on October 21, 2025
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Jim
Houston, US
★★★★★ 5
Surprisingly good shirt for the price
Fit Type: Regular Fit, Color: White, Size: XX-Large
I’m generally pleased with my purchase. I got a 2XL because the website it would fit my neck. Around the waist it fit similar to Amazon Essentials work shirts (like mechanics use which I find comfortable). It was snug around the waist when sitting, but I can’t complain because I have a belly. I did find the neck snug when buttoning the top button so it means the neck is 18 or 18.5 and I wear a 19/19.5 to have 1-2 fingers space in the collar. The shirt is surprisingly thick like Amazon’s work shirts, much thicker than other dress shirts from another brand. And I am pleased that this shirt has button holes like other Amazon shirts does, all vertical button holes except the last one at the bottom which is horizontal. That feature keeps the shirt from unbuttoning itself during daily movement at the office. A very nice feature! I was a little disappointed in how it was packaged however but I have to press and wash it anyway.
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Reviewed in the United States on February 24, 2023
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NORBERT YOUNG
Carnegie, US
★★★★★ 4
Nice shirt, excellent quality, nice cloth and buttons. No pockets A+
Fit Type: Regular Fit, Color: White, Size: Large
Nice quality shirt cut a little small. The shirt kind of needs to be pressed before wearing however at this price point and quality its a buy!
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Reviewed in the United States on May 19, 2026
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PAMELA
Massapequa, US
★★★★★ 5
Fits perfect
Fit Type: Regular Fit, Color: Grey, Size: X-Large
This shirt is a perfect fit. I would buy it again in other colors.
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Reviewed in the United States on May 9, 2026

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