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Flat Rate $9.99 Shipping - Express ONLY - (1-4 Days Delivery) - No Account Needed
Flat Rate $9.99 Shipping - Express ONLY - (1-4 Days Delivery) - No Account Needed
034 - Stainless Steel Racing Catalyst Down pipe, Audi B9 S4/S5 - 034-105-4045

034 Motorsport - Audi B9 S4/S5 Stainless Steel Downpipe with Racing Catalyst - 034-105-4045

$2,922.50 - $2,922.50
$2,922.50
$2,922.50 - $2,922.50
$2,922.50
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034-105-4045
IN STOCK (3)
1-4 days express
Same or next day
FLAT rate $9.99
Express & premium only
Local stock in Sydney
Genuine parts 2 years*

Customer Reviews

Based on 1 review
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K
Kane
big boy pants for your turbo

its a very nice looking piece of hardware. I didnt have the tools so got it installed - about 3 hours according to the workshop. paired with a stage 2 034 tune, it sounds great. it was actually a bit too loud for me in dynamic mode so I turned off the soundaktor with OBDeleven, and now its perfect. in comfort you barely notice any difference, and in dynamic the extra sound depth and crackles are amazing. it used to annoy me that C43s sounded that little bit more aggressive in comparison, but that isnt the case anymore. I dont have any tinny sounding vibrations - which can happen with some cats.

performance wise, its not a massive step up from stage 1 if you already have an intercooler and intake. its a prerequisite for stage 3, which is something I will get around to some day, but if you dont ever plan on going that far its a questionable investment for performance alone. I am running the stock exhaust so I dont know what difference it would make to an aftermarket one sound wise.

one thing that I wasnt expecting, the first run after installation when it heats up some of the chemicals from the heat wrap will burn off - which I know now is completely normal - but it smells like burning plastic. you just need to put your aircon on recirculation for a while until it burns off - only took 1-2 drives of the car for me.

also since this is my daily driver, from a roadworthiness perspective the downpipe has an EU4 200cpsi cat, and I have not noticed any obvious change in smell leaving the car running in the garage for a few minutes, EU6 300cpsi cats will set you back at least another grand, and a catless would obviously stink and be illegal - so this was the middle ground that worked for me.

I also didnt get any CEL driving around in stage 1 for at least 1/2 a day. I would assume most people who fit this would have a mechanism to clear faults, but the less often the better I guess. once you go to stage 2 the CEL is supressed, so it doesnt matter.

034 Motorsport Australia - Audi B9 S4/S5 Stainless Steel Downpipe with Racing Catalyst - 034-105-4045.

The 034 Motorsport Stainless Steel Racing Catalyst Downpipe for B9 Audi S4/S5 is designed as a drop-in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note. This upgrade eliminates the primary flow limitation in the factory exhaust system, allowing you to maximize the potential of your turbocharged engine.

Optimized for increased flow and maximum performance, the Stainless Steel Racing Catalyst features a massive 148mm diameter Euro 4 racing catalytic converter in the factory location. This complete drop-in solution includes an integrated v-band flange at the turbine outlet, integrated oxygen sensor bung after the catalyst, integrated 3-bolt downpipe flanges, and a complete gasket/hardware kit to allow for precise fitment and ease of installation. The Stainless Steel Racing Catalyst for B9 Audi S4/S5 vehicles is constructed from 304 stainless steel for maximum durability and corrosion resistance, is TIG-welded, and includes an integrated OE style heat isolation barrier  to minimize exhaust heat transferred into the engine bay.

034Motorsport's Stainless Steel Racing Catalyst was developed entirely in-house on 034Motorsport's Development B9 Audi S4 utilizing the latest in 3D Scanning Technology, CAD Software, and Rapid Prototyping Techniques. Final production units were then tested extensively on track in B9 Audi S4 vehicles before release.

FEATURES:

  • Increased Horsepower & Torque Throughout the Powerband (+ 21 HP / + 33 TQ Peak)
  • Quicker Turbocharger Spool & Faster Transient Response (150-300 RPM Quicker Spool)
  • Enhanced Exhaust Note & Turbocharger Sounds
  • Direct, Bolt-In Upgrade for Factory Catalytic Converter
  • Engineered In-House by 034Motorsport's Engineering Team
  • Factory-Location 148mm Euro 4 Racing Catalytic Converter
  • 304 Stainless Steel Construction with Integrated Inlet/Outlet Flanges & O2 Sensor Bung
  • Precision CNC-Machined Flange Mating Surfaces
  • OE Style Heat Isolation Barrier
  • TIG Welded & Backpurged

WHAT'S INCLUDED:

  • 034Motorsport Stainless Steel Performance Downpipe
  • Integrated Euro 4 Racing Catalytic Converter
  • Factory Turbocharger Outlet Gasket
  • Factory Catalyst to Downpipe Gaskets (2)
  • M8 Locknuts (6)
  • M8x30 Socket Head Cap Screws (4)
  • M8 Washers (4)

SUPPORTED VEHICLES

  • 2017 - Present Audi S4 (B9)
    • 3.0 TFSI
  • 2017 - Present Audi S5 (B9)
    • 3.0 TFSI

The installation of your 034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 for the B9 Audi S4/S5 3.0 TFSI is an moderately involved process that will take approximately three hours to complete. 

Download the 034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 for the B9 Audi S4/S5 Install Guide

A back order product means we do not have this in our local warehouse. We will have to 'back order' this in for you. This can take anywhere from 4 to 6 weeks. Popular items can go on back order but are often restocked in a short time such as 1 week.

FLAT rate $9.99

We use Australia post EXPRESS yellow and star track premium (dynamic pricing).

We ship from Western Sydney.

We ship every working day. Shipping cut off time is 2pm.

We are working on an average 5 to 6 working hours for dispatch.

Yes we have a trade program with exclusive trade discounts.

Yes it is in stock, we hold local stock we don't drop ship.

All new genuine parts have a 2 year warranty.

Yes we only sell new parts, we do not sell used or reconditioned parts.

YES if the part number has a Volkswagen or Audi part number it is a genuine part. If if is an aftermarket part we will label it as such.

Minimum amount of time is 4 weeks.

Please contact us by the website chat or or use any of the contact forms or email us and we will get back to you as soon as we can.

We work normal business hours and we don't have someone manning our website chat at 4am.

If you have purchased a part under our fitment data and direction we will gladly exchange it or refund it. If you have purchased the wrong part we can provide a store credit or 20% restocking fee.

Please email us to discuss any warranty issues. We normally need a mechanics report to prove a part has failed. If it has failed and it is under warranty we will replace it. We cannot warrant hearsay from home mechanics.

We are unique in that we import our own genuine parts and this enables us to pass the savings onto you.

You will save up to 30% with genuine parts.

That can range from 100% down to 20% - The savings will generally be 30% to 50%.

Yes we can provide discounts for 034 motorsport customers who wish to purchase a lot of products in one go

We pick and ship EVERY working day. 12pm is the daily cut off time. Common times for dispatch are 5 to 6 hours on working days. We normally dispatch last night's orders the next morning.

Shipping is FLAT rate $9.99

We ship from Western Sydney, Australia wide. We only use EXPRESS shipping from Aus Post express (yellow) or star track premium. Please see below for estimated shipping times.

For Sydney customers next day shipping is available if you place your order before 12pm.

STAR TRACK PREMIUM customers get EXPRESS dispatch, purchase this option for the fastest shipping

You will receive SMS and email notifications when the item is dispatched. You will then be able to track your order. We use SHIPPIT for order tracking and management. You will be updated via SMS and email with progress on your shipping. You will receive notifications on the morning of the day of the delivery to notify you the package is 'on-board for delivery'

Location 

Post Codes 

Estimated delivery time in working days 

NSW & ACT 

Sydney Metro 

2000-2234 

2745-2751 

1 Day 

NSW Other Metro including ACT (Canberra, Newcastle, Wollongong, Bathurst, Orange, Dubbo, etc.) 

 

1-2 days 

NSW Country 

 

2-4 Days 

VIC 

Melbourne Metro 

3000-3208 

1 Day 

VIC Other Metro (Albury, Bendigo, Shepparton) 

 

2-3 Days 

VIC Country 

 

2-4 Days 

QLD 

Brisbane Metro 

 

1 Day 

QLD Metro Other (Gold Coast, Sunshine Coast, Mackay,  

 

1-2 Days 

TAS 

Hobart & Launceston Metro 

 

1 Day 

TAS Country 

 

2-3 Days 

SA 

Adelaide Metro 

 

1 Day 

SA Country 

 

2-3 Days 

WA 

Perth Metro 

 

2 Days 

WA Metro Other (Bunbury, Albany) 

 

2-3 Days 

WA Country 

 

3-5 days 

NT 

Darwin Metro 

 

1-2 Days 

NT Country 

 

3-5 Days 

Did you know VAGPARTS Australia has a trade program? Sign up for exclusive trade pricing and discounts on Volkswagen & Audi Parts. If you are a mechanic, tuner or have an automotive business this program is for you!

Our trade only pricing is typically 30% lower than dealer trade prices. Our exclusive trade pricing is hard to beat!

You will receive exclusive industry discount, priority customer service, help with parts interpretation and you can drop ship to your customers if you wish to resell our items. We have access to millions of SKU's and can source anything for you.

Trade only discounted pricing
Premium & Express shipping only
Priority fulfilment
Dedicated parts specialist support
Free listing in our trade directory
Drop shipping enabled
Custom Part support - send us your part number we will source it
FREE SHIPPING over $50 or $12.95
Help to source hard to find products
Trade portal (password protected)
Access to 034 Motorsport at trade pricing

This is a great service for the astute workshop owner who wishes to purchase high grade parts at competitive prices.

We express ship ONLY – every single working day from our Western Sydney warehouse.

Join the trade program today!

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
K
Kane
big boy pants for your turbo

its a very nice looking piece of hardware. I didnt have the tools so got it installed - about 3 hours according to the workshop. paired with a stage 2 034 tune, it sounds great. it was actually a bit too loud for me in dynamic mode so I turned off the soundaktor with OBDeleven, and now its perfect. in comfort you barely notice any difference, and in dynamic the extra sound depth and crackles are amazing. it used to annoy me that C43s sounded that little bit more aggressive in comparison, but that isnt the case anymore. I dont have any tinny sounding vibrations - which can happen with some cats.

performance wise, its not a massive step up from stage 1 if you already have an intercooler and intake. its a prerequisite for stage 3, which is something I will get around to some day, but if you dont ever plan on going that far its a questionable investment for performance alone. I am running the stock exhaust so I dont know what difference it would make to an aftermarket one sound wise.

one thing that I wasnt expecting, the first run after installation when it heats up some of the chemicals from the heat wrap will burn off - which I know now is completely normal - but it smells like burning plastic. you just need to put your aircon on recirculation for a while until it burns off - only took 1-2 drives of the car for me.

also since this is my daily driver, from a roadworthiness perspective the downpipe has an EU4 200cpsi cat, and I have not noticed any obvious change in smell leaving the car running in the garage for a few minutes, EU6 300cpsi cats will set you back at least another grand, and a catless would obviously stink and be illegal - so this was the middle ground that worked for me.

I also didnt get any CEL driving around in stage 1 for at least 1/2 a day. I would assume most people who fit this would have a mechanism to clear faults, but the less often the better I guess. once you go to stage 2 the CEL is supressed, so it doesnt matter.

Service & Maintenance Guide

Minor Service - Oil Service

Every 10k is a minor service - oil and filter. Do not follow the factory 15K and go 7k for tuned vehicles. Oil is cheap, engines are not!

Intermediate Service

Every 30k is an intermediate service - oil and filter, cabin filter & air filter, brake fluid flush, remote batteries.

Major Service

Every 60k is a major service - oil and filter, cabin filter & air filter, remote batteries, brake fluid flush, fuel filter, DSG gearbox oil and filter (unless automatic, manual, tiptronic or multitronic), spark plugs and haldex oil.

Additional: Water pump & timing belt and poly belt on belt driven engines should be done every 60k.

Intermediate Service

Every 90k is another intermediate service - same as 30k plus a poly belt / accessory belt.

Minor Service - Oil Service

Every 10k is a minor service - oil and filter. Do not follow the factory 15K and go 7k for tuned vehicles. Oil is cheap, engines are not!

Intermediate Service

Every 30k is an intermediate service - oil and filter, cabin filter & air filter, brake fluid flush, remote batteries.

Major Service

Every 60k is a major service - oil and filter, cabin filter & air filter, remote batteries, brake fluid flush, fuel filter, DSG gearbox oil and filter (unless automatic, manual, tiptronic or multitronic), spark plugs and haldex oil.

Additional: Water pump & timing belt and poly belt on belt driven engines should be done every 60k.

Intermediate Service

Every 90k is another intermediate service - same as 30k plus a poly belt / accessory belt.

Replace Haldex fluid every 30k rather than 60k, Gearbox oil change at 40k for DSG is advised. Front and rear differential oils are "longlife" but replace every 60k to be safe.
See: Transmission & drivetrain

Vagparts Australia

You may be interested to find out more about VAGPARTS Australia. We started our business to solve one problem. Getting genine parts at decent prices. We import a huge range of genuine only parts so you don't have to! We warehouse in Western Sydney and ship daily with Aus post Express and Star track premium. Our typical times to fulfil orders is 1 day and typical shipping times are 3 to 4 days Australia wide.

We have a growing trade program and welcome mechanics and tuners to join with significant discounts on offer. We can also source any product you need with hard to find parts.

For home enthusiasts we welcome you to purchase the parts yourself and have them shipped direct to your front door. You can also purchase these parts and have them shipped to any mechanic or our approved workshop partners.