SKU: 68615199163

APR T2100004 - K04-15 Turbo System - 1.8T Longitudinal - B6 A4 w/o Injectors

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Description

APR T2100004 - K04-15 Turbo System - 1.8T Longitudinal - B6 A4 w/o InjectorsFits Audi A4 02 06, A4 Quattro 02 05 Overview APR is now proud to release our K04 upgrade kit for the B6 Audi A4 1. 8T. Our kit includes the K04 turbo, the compressor inlet O ring, three turbo outlet studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. This kit is a straight forward turbo swap that makes a big difference in the power output of the car. This kit makes solid gains in both horsepower and torque.

Fits Audi A4 02-06, A4 Quattro 02-05

Overview

APR is now proud to release our K04 upgrade kit for the B6 Audi A4 1.8T. Our kit includes the K04 turbo, the compressor inlet O-ring, three turbo outlet studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. This kit is a straight forward turbo swap that makes a big difference in the power output of the car. This kit makes solid gains in both horsepower and torque. With no other mods than an exhaust, the kit made 247hp/286lb-ft on 93 octane gas. The exhaust is not required. This kit includes software. Injectors sold separately. Injector factory part number: 06A906031J Injector bosch part number: 02801558921

Features:

  • Big power and torque gains
  • OEM K04 drop-in turbo
  • High quality materials and components throughout
  • ECU software included (See tech notes)

Specs

Brand APR
Category Exhaust
ECU Software Included Yes
Emission Code 7
Product Type Turbocharger Systems
Sub Category Service Kits
Turbo Brand Borg Warner
Turbo Type Drop-in Turbo
Turbocharger K04
Version Longitudinal
UPC 810904031587
Part Number T2100004

Emissions

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.

Tech Resources

Instructions - APR_call_support.pdf
Please note: Specific software is required to use this system. Software is included. The software installs to your vehicle's factory ECU. Software can only be installed by an Authorized APR dealer. Software compatibility must be checked before purchase. Injectors required. Injector factory part number: 06A906031J. Injector bosch part number: 02801558921.
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: 68615199163

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Cheila
Whiting, US
★★★★★ 5
Very stylish💜💜
Size: 6, Color: Light Blue, Size: 6, Color: Light Blue
This little suit for boys is very stylish. I bought it for my grandson for a wedding occasion and it looked very nice. The fabric is not too thick so for the summer wedding it was great. I pick the blue color and it looked fantastic!
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Reviewed in the United States on March 16, 2026
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Teresa Stevens
Chelsea, US
★★★★★ 5
Loved it
Fit perfectly
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Reviewed in the United States on December 9, 2025
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Anthony Honny
Draper, US
★★★★★ 4
Boys linen suit
Size: 10, Color: Light Blue
Looks great. Just wish it included a shirt
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Reviewed in the United States on March 21, 2026
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Denise
Battle Creek, US
★★★★★ 5
Great product
Size: 10, Color: Light Champagne, Size: 10, Color: Light Champagne
Not bring the tshirts but fit really good
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Reviewed in the United States on August 10, 2025
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Tania S
Whiting, US
★★★★★ 5
Very comfortable
Size: 14, Color: Light Green
I received so many compliments on my son’s outfit for graduation. 
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Reviewed in the United States on June 26, 2025

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