Are injectors included with the APR K04 Turbo System for B6?

No. This version of the APR K04 Turbo System for B6 cars is sold without injectors, and they are required. The factory part number is 06A906031J and the Bosch part number is 0280155892. Contact us if you need help sourcing them.

How much power does the APR B6 A4 K04 kit make?

APR recorded 247 horsepower and 286 lb-ft on 93 octane fuel with an exhaust as the only other modification. The exhaust is not required, but the published figure was measured with one fitted, so a car without it may make a little less.

Who installs the software for the APR A4 1.8T turbo kit?

The software is included and installs to your factory ECU, but only an authorized APR dealer can install it. Software compatibility must be checked before purchase, so contact us with your vehicle details before ordering. Ask us if you need help arranging it.

Is the APR B6 1.8T K04 a bolt-in swap?

Yes. APR describes it as a straightforward turbo swap. The kit includes the compressor inlet O-ring, three turbo outlet studs, a manifold to turbo gasket and a turbo to cat gasket, so the turbo bolts in place of the factory unit.

Which A4 models does the APR K04 turbo kit fit?

APR lists the B6 Audi A4 1.8T from 2002 to 2006 and the B6 A4 quattro 1.8T from 2002 to 2005, both with the longitudinal 1.8T engine. Contact us with your VIN if you are unsure which engine your car has.

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Description

APR K04 Turbo System for B6 Audi A4 1.8T, Without Injectors

The APR K04 Turbo System for B6 Audi A4 1.8T models replaces the factory turbo on the longitudinal 1.8T with a larger K04 drop-in unit for solid gains in horsepower and torque. It is a straightforward turbo swap, and the kit includes APR software for the factory ECU along with the gaskets, O-ring and studs needed to fit the turbo. Larger injectors are required and are sold separately, so this version suits an owner who will source the factory injectors on their own.

Tested Result

On 93 octane fuel, with an exhaust as the only other modification, APR recorded 247 horsepower and 286 lb-ft. The exhaust is not required for the kit to run, though the result above was measured with one fitted.

Features

OEM K04 drop-in turbocharger
APR ECU software included
Compressor inlet O-ring
Three turbo outlet studs
Manifold to turbo and turbo to cat gaskets

What’s Included

K04 turbocharger
Compressor inlet O-ring
Turbo outlet studs (x3)
Manifold to turbo gasket
Turbo to cat gasket
APR ECU software

Applications

Audi A4: B6 | 2002-2006 | 1.8T longitudinal
Audi A4 quattro: B6 | 2002-2005 | 1.8T longitudinal

Notes

Injectors are required and are not included: factory part number 06A906031J, Bosch part number 0280155892
Software is included and installs to the factory ECU, but only an authorized APR dealer can install it. Check software compatibility with us before purchase
APR measured 247 hp and 286 lb-ft on 93 octane with an exhaust as the only other modification

Frequently Asked Questions

Are injectors included with the APR K04 Turbo System for B6? No. This version of the APR K04 Turbo System for B6 cars is sold without injectors, and they are required. The factory part number is 06A906031J and the Bosch part number is 0280155892. Contact us if you need help sourcing them.
How much power does the APR B6 A4 K04 kit make? APR recorded 247 horsepower and 286 lb-ft on 93 octane fuel with an exhaust as the only other modification. The exhaust is not required, but the published figure was measured with one fitted, so a car without it may make a little less.
Who installs the software for the APR A4 1.8T turbo kit? The software is included and installs to your factory ECU, but only an authorized APR dealer can install it. Software compatibility must be checked before purchase, so contact us with your vehicle details before ordering. Ask us if you need help arranging it.
Is the APR B6 1.8T K04 a bolt-in swap? Yes. APR describes it as a straightforward turbo swap. The kit includes the compressor inlet O-ring, three turbo outlet studs, a manifold to turbo gasket and a turbo to cat gasket, so the turbo bolts in place of the factory unit.
Which A4 models does the APR K04 turbo kit fit? APR lists the B6 Audi A4 1.8T from 2002 to 2006 and the B6 A4 quattro 1.8T from 2002 to 2005, both with the longitudinal 1.8T engine. Contact us with your VIN if you are unsure which engine your car has.

About APR Tuning

APR was founded in 1997 and develops performance hardware, software and calibrations for Volkswagen, Audi, SEAT, Skoda and Porsche vehicles, from intakes, intercoolers and turbocharger systems to exhausts, brakes and suspension. It designs and manufactures from an 80,000 square foot headquarters in Opelika, Alabama, which it shares with Dinan as part of Holley Performance Brands, and delivers its software worldwide through a 24-hour automated system run from the same site.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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APR K04 Turbo System for B6 Audi A4 1.8T, Without Injectors [T2100004]

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APR K04 Turbo System for B6 Audi A4 1.8T, Without Injectors

Tested Result

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About APR Tuning

Reviews