CTS Turbo BorgWarner K04 Turbo Upgrade Kit | B7 / B8 A4 2.0
SKU: 35155730357

CTS Turbo BorgWarner K04 Turbo Upgrade Kit | B7 / B8 A4 2.0

Sale price$826.20 Regular price$918.00
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

CTS Turbo BorgWarner K04 Turbo Upgrade Kit | B7 / B8 A4 2.0CTS Turbo is proud to announce an official release of our new K04 Turbocharger Upgrade for B7, B8, and B8. 5 Audi A4 A5 ALLROAD 2. 0T cars. This unit features a full frame K04 CHRA installed into our proprietary, in house designed compressor cover and turbine housing. Based on the turbo which comes stock on a MK6 Golf R, this upgrade kit is made to fit directly in place of factory Borg Warner or IHI turbo found in B7 A4, B8 A4 A5 AllRoad and B8. 5 A4

CTS Turbo is proud to announce an official release of our new K04 Turbocharger Upgrade for B7, B8, and B8.5 Audi A4/A5/ALLROAD 2.0T cars.

This unit features a full-frame K04 CHRA installed into our proprietary, in-house designed compressor cover and turbine housing. Based on the turbo which comes stock on a MK6 Golf R, this upgrade kit is made to fit directly in place of factory Borg Warner or IHI turbo found in B7 A4, B8 A4/A5/AllRoad and B8.5 A4/A5/AllRoad 2.0T.

Our engineers designed the compressor cover and exhaust housing to work with the larger K04 CHRA, exactly how intended. While other manufacturers simply install a larger CHRA into a small factory-spec housing. Beware of these hybrid builds, they are not made to provide optimal flow for the larger turbine wheel and can lead to poor performance and premature failure.

High-quality castings are CNC machined to replace your factory turbocharger and do not require any additional parts to be installed. All you need to run this K04 Upgrade is a tune for your ECU.

To make installation even easier, we supply OEM gaskets and installation hardware.

Features:

  • CTS-spec K04 CHRA with heavy-duty thrust bearings
  • Billet compressor wheel (MFS – machined from solid)
  • K04-specific compressor and turbine housing. NOT A HYBRID!
  • OEM+ manufacturing tolerances
  • VSR high-speed balanced
  • Direct-fit factory replacement
  • OEM installation kit included
  • Compatible with any K04-specific tune
  • With supporting mods this turbo is capable of producing 350HP/340TQ on a 2.0T

Fitment:

  • 2006 – 2009 Audi A4 2.0T
  • 2009 – 2015 Audi A4 2.0T
  • 2009 – 2015 Audi A5 2.0T
  • 2009 – 2015 Audi Allroad 2.0T

Note:

  • Aftermarket High-flow catalytic converter recommended
  • K04-specific tuning required (B7 A4 required upgraded HPFP and fuel injectors)
  • Bracket on coolant line may require trimming on some models
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: 35155730357

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ajn
Louisville, US
★★★★★ 5
Excellent athletic socks
Size: Large, Color: (100) White / White / Black
Solid athletic socks at a great price. Not too thick, not too thin. Second time I've purchased them. They last longer than most socks I've used in the past too. Only concern is the sizing. I may be reading the sizing chart wrong, but for my size 13 feet it says XL are the correct sock size. I've ordered Large twice and they're perfect. I would imagine the size Large socks would also fit up to size 14 shoe, but probably need to go with XL if foot is lager than 14.
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Reviewed in the United States on April 12, 2026
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Kevin March
Pawtucket, US
★★★★★ 4
Great product
Size: Large, Color: (035) Steel / White / Black
Comfortable fit perfect
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Reviewed in the United States on March 15, 2026
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Wesley
Grantham, US
★★★★★ 5
Quality No Show Socks That Are Comfortable and Durable
Size: Large, Color: (100) White / White / Black
These Under Armour no show socks are great for everyday training and casual wear. The cotton blend feels comfortable and they stay in place throughout the day. Getting six pairs in a pack is solid value for a quality brand. They hold up well after multiple washes and the no show style works great with most athletic shoes. A reliable go-to sock.
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Reviewed in the United States on April 30, 2026
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Hanson
Fort Morgan, US
★★★★★ 5
Comfortable
Size: Large, Color: (001) Black / Black / White
I recently picked up a pair of Under Armour socks, and they’ve quickly become my go-to choice for daily wear and workouts. From the first wear, the fit felt snug and supportive without being too tight. The fabric is lightweight yet durable, and it does a great job wicking sweat — keeping my feet dry even during longer runs or intense gym sessions. One of the things I appreciate most is the arch support and cushioning in the right places. It adds just enough padding where I need it, especially under the ball and heel of the foot, which makes a noticeable difference on days when I’m on my feet a lot. The socks also have a nice breathable mesh pattern that improves airflow.
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Reviewed in the United States on January 4, 2026
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Andrew B
Dallas, US
★★★★★ 5
High Quality
Number of Items: 6, Color: Black (6-pairs), Size: Large
High quality and fit great
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