Search  for anything...
STIGAN

K04 Performance Upgrade Turbo Turbocharger For Audi A4 & Volkswagen VW Passat 1.8T B5 B6 1997-2006 - Stigan 847-1435 New

    • Based on 58 reviews
Condition: New
Checking for product changes
$300.10 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 19 left in stock
Fulfilled by BuyAutoParts
Arrives Thursday, May 9
Order within 9 hours and 20 minutes
Available payment plans shown during checkout

Features

  • Two year, unlimited-mileage warranty. Guaranteed Exact Fit for easy installation
  • Direct bolt-in replacement for the factory BorgWarner K03 unit, with larger K04 style compressor housing and wheel.
  • This is NOT LEGAL for sale or use in California, Colorado, or anywhere else that requires CARB emissions certification
  • Fits all US-spec 1997-2006 Audi A4 & VW Passat 1.8T. Does NOT fit VW Golf, Jetta, Beetle or Audi TT due to different mounting points. This Turbocharger is NOT CARB-approved and not legal for sale in California.
  • This is a K04-style bolt-in high performance upgrade turbocharger. Please note that your results may vary depending on which supporting mods are done to your vehicle. It is HIGHLY recommended that you upgrade your fuel injectors, intercooler, and have the vehicle professionally tuned for maximum potential and reliability

Manufacturer: ‎Stigan


Brand: ‎STIGAN


Item Weight: ‎13 pounds


Product Dimensions: ‎12 x 10 x 9 inches


Manufacturer Part Number: ‎847-1435


OEM Part Number: ‎030TC14082000 030TC14306000, 033TC10082000 058 145 703, 058145703E 058145703EX, 703L 058145703C 058145703D, J 058 145 703J 058 145


Date First Available: March 20, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • For the price well worth it
Review Image by Ethan K. Ethan K.
Let me start by saying this is a wonderful product. I purchased this turbo to put on my 97 Audi A4 Quattro. It shipped to my home with in 4 days. The installation Itself went very smooth, only took a few hours. This may have been because I had the whole front end off while I did a timing belt, water pump, turbo and FMIC. Even when I did my turbo install the second time it took less than 3 hours by my self. Either way this part was a direct fit and bolted up with ease. After installation the car ran great for about 300 miles and then one day I got in it and it was just not running right and smoking so I thought I blew the turbo. So I called the Stigan company talked to a representative (who was wonderful I wish I remembered her name to shout her out) with in 2 days I had a brand new turbo at my door. That same day I put the new turbo in started the car still had the same issue. I then realized I had a bad Maf swapped it out and the car ran great. In the process I realized I probably didn’t even blow the original one up. As of now I have about 600 miles on this new turbo with no issues. My car is currently running on a stock tune. The car does have a number of supporting modes though. This list includes 3” catless down pipe, Rks Diverter valve, CX front mount, a silicone turbo inlet and a few more random things. The car runs great and the boost kicks in quickly. This is a great upgrade for someone who has a worn out turbo like I did. I will add more to this review in a few months after the turbo has about 3,000 miles on it and I put my GIAC PC16 Tune on. I’ll let you know how it does after get to push it a lot more so far though a great product!!! *Update have put 10,000miles on this thing and it’s still boosting no issues. About 1000 miles ago I added my pc16 tune and clutch upgrade I’m hitting 18psi before 3k you really feel the pull in the car now **** Update part 2 I’m at 20,000 miles now with the tuned set up of me just BEATING on this thing and I’m still boosting great ... show more
Reviewed in the United States on February 26, 2020 by Ethan K. Ethan K.
    • So far so good
It's only been about 10 days since I installed it but running very well. Very good improvement on power versus my old K03s turbo that started to have a waste gate leak. Still a stock tune though I'm running straight through "test pipe" and removed the cat. There is no emissions cert required where I live and the test pipe should help with flow and an additional 10-15 HP on top of the upgraded K04 style turbo upgrade. It sure does pull like a 1.8t 225 HP TT Quattro I once had. 12/20/23 - Still working well off stock tune. Hope to get a tune on it, maybe beginning of next year. ... show more
Reviewed in the United States on November 22, 2023 by Dayton Car Care
    • this has been a great replacement. The only issue with this kit
I have been warned not to purchase and install an aftermarket turbo and I payed that price buying a k04-015 turbo off eBay, made by Rev9. The cartridge blew out within' two days. Screwed up my MAF sensor, shot oil through my new FMIC and torched my up/downstream o2 sensors. Not to mention wasting $100 on synthetic oil and G12 coolant. I am an ASE certified mechanic and I know what I'm doing. With today's economy, I couldn't afford to spend over $1k on the stock replacement, nor a more expensive route. APR, ECStuning, etc etc... So, I took a chance on this model. The kit has the thicker, premium gaskets and a set of exhaust studs that work well. A set of high quality vacuum lines and a oil pre filler that I kept for future use. So far, this has been a great replacement. The only issue with this kit; should come with new crush washers (at least an assortment) to swap oil feed and coolant feed adapter ports. Instead, paper gaskets "ghetto washers", I call them. They are very hard to find locally. I pulled a decent set from an LKQ turbo which worked out well. The kit comes with pre-ignition steps to ensure the turbo is properly lubricated and has a steady oil feed to prevent premature cartridge failure. All and all, so far, I'm very pleased with this product and manufacturer. Spooling 20 psi under 3k Rpms. Who doesn't appreciate that!? My ride: 2001 VW Passat 1.8t AWM. 386cc 2 1/2" FMIC 4bar FPR (adjustable) Forge Splitter RBV Giac Stage 2+ .... bunch of other crap ... show more
Reviewed in the United States on March 13, 2017 by Sue Duvall
    • Great turbo cant wait to buy supporting mods!
Great price for a great turbo! Installed this as the base to my slight build of my 1.8t in my passat and to fix the chattering Wastegate from the worn out ko3. Install was super easy if you are mechanically inclined. Took me about 4 hours with the help of a friend. Make sure to get about 4 extra crush washers. The coolant return line from the turbo bolts to the block, it's easier to remove the banjo bolt from the block and take of hose off with the turbo instead of trying to take the banjo bolt off at the turbo as there is a small bolt that holds that banjo bolt on and is inaccesible with the turbo on the car you will see what I mean when you do it. Overall this turbo is great, spools fast, sounds mean (I have a silicone turbo inlet pipe and cone filter with heat shield) and makes full boost (8psi) on a stock ko3 program. So YES you can swap this turbo in and run it on a stock tune but a k04 tune and supporting mods would be way better. Only problem I'm having is I think my catalytic converter is restricting the exhaust flow (it's partially melted or clogged or something) and putting my ecu into limp mode. I'm only making 5psi and the ecu is requesting more boost than it's actually getting. I'll report back once I find the problem. Edit: after replacing the hoses to the N75 valve and backing off the tension of my diverter valve spring, along with a host of other tests, the problem has been solved! This turbo now spikes at about 10-12psi then drops to about 8-9psi and holds steady all the way to redline! Love this little turbo ... show more
Reviewed in the United States on October 6, 2018 by RJ
    • AMAZING turbo.
The ko3 was blown so I replaced it with this and have put over 5k miles on since then and it runs strong! No tune needed. Right now I’m pushing 20-24psi on the high end, hasn’t blown up yet 😂🙏🏼
Reviewed in the United States on September 30, 2023 by Brandyn White
    • Bolt on replacement fit right no problems
Liked how this fit right in
Reviewed in the United States on September 23, 2022 by Humberto garcia
    • Shaft Play in 5k Miles
My turbo was not spoiling correctly so I decided to check the turbo shaft to make sure it had no play. It had in and out play in under 5k miles. Good turbo otherwise. Also cannot contact stigan, never replied for the lifetime warranty.
Reviewed in the United States on September 11, 2021 by Amazon Customer

Can't find a product?

Find it on Amazon first, then paste the link below.