New Beetle Transverse 1.8T K04-001 Bolt-on ...

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Skip to content Home/Audi, TT, Passenger Car Turbos, Performance, Volkswagen, Golf, Golf GTI, GTI, Jetta, New Beetle/Audi/VW 1.8T K04-001 Bolt-On Turbo Upgrade – TT, Golf, Jetta, New Beetle (300 WHP) PDZX-183T Audi TT / Golf / Jetta / New Beetle Transverse 1.8T STAGE 3 Bolt-on 350hp Upgrade Turbocharger PACKAGE

PDZX-183T Audi TT / Golf / Jetta / New Beetle Transverse 1.8T STAGE 3 Bolt-on 350hp Upgrade Turbocharger PACKAGE

Audi/VW 1.8T K04-001 Bolt-On Turbo Upgrade – TT, Golf, Jetta, New Beetle (300 WHP)

$995.00

Unleash up to 300 wheel horsepower with this K04-001 bolt-on turbo upgrade for transverse VW and Audi 1.8T engines. Built and precision-balanced in Michigan, USA, it features a billet compressor wheel, high-efficiency turbine wheel, and high-heat turbine housing for extreme durability. The fast-spooling design delivers instant throttle response, while the direct-fit installation makes upgrading simple. Supporting mods are recommended for maximum performance. Includes install gaskets and studs. Free Ground Shipping within the continental U.S.

Audi/VW 1.8T K04-001 Bolt-On Turbo Upgrade – TT, Golf, Jetta, New Beetle (300 WHP) quantity Add to cart SKU: 34044 Categories: Audi, Golf, Golf GTI, GTI, Jetta, New Beetle, Passenger Car Turbos, Performance, TT, Volkswagen Tags: Audi, Golf, GTI, Jetta, New Beetle, TT, Volkswagen

Description

Description

Audi TT / Golf / Jetta / New Beetle 1.8T K04-001 Bolt-On 300 WHP Turbocharger Upgrade

The Turbo Concepts K04-001 bolt-on turbocharger is engineered for transverse-mounted VW/Audi 1.8T engines, delivering faster spool, strong mid-range torque, and reliable high-RPM power. Capable of up to 300 WHP with proper fueling and tuning, it’s the perfect upgrade for enthusiasts seeking responsive, everyday drivability with race-ready performance

Key Features

Bolt-On Upgrade – Fits transverse 1.8T engines without major modifications.
60mm TCS Extended-Tip Billet Compressor Wheel – Delivers a wide, solid powerband from low to high RPM.
50mm High-Flow Turbine Wheel – Reduces back pressure and maintains power deep into the rev range.
Custom High-Heat Ductile Steel Turbine Housing – Enlarged wastegate flapper minimizes boost creep.
Billet Adjustable Actuator Upon request – The unit comes with a Standard 6 psi spring; A 0.8 or 1.0 bar available by request.
Fast Spool – Full boost potential at just 2,850 RPM for instant throttle response.
OE-Quality Build – All components checked for exact specifications, material integrity, and heat treatment.
Built in Michigan, USA – Balanced and assembled by experienced turbo technicians.

Performance Output on Pump Gas

3,000 RPM – 143.3 g/s = 131.6 WHP
4,000 RPM – 186.7 g/s = 182.9 WHP
5,000 RPM – 238.3 g/s = 233.5 WHP
6,000 RPM – 268.7 g/s = 262.3 WHP

With proper fueling and tuning, this turbo is capable of 300 WHP.

Installation Notes

Direct bolt-on for most transverse VW/Audi 1.8T setups.
AWP engine models may require an upgraded silicone intake hose for easier installation.
CHRA can be adapted for longitudinal 1.8T engines upon request.
Includes turbine inlet & outlet gaskets, oil drain gasket, studs (x4), and crush washers (x3).

Recommended Supporting Upgrades for 300 WHP

Performance ECU tune
Upgraded fuel injectors
High-pressure fuel pump
Larger intercooler
High-octane fuel

Call our toll-free line to order if: 1) You require express air delivery. 2) You are not 100% sure this is the correct unit for your vehicle. 3) You are outside the lower 48 states, USA. 4) You are not sure why your turbo failed and our technical support will help you diagnose the cause of failure to ensure the successful installation of your replacement unit.

Vehicle Fitment

Audi TT MKI 1.8T (2000–2006)
VW Golf / GTI IV 1.8T (2000–2005)
VW Jetta / GLI IV 1.8T (1999–2005)
VW New Beetle 1.8T (1999–2005)

OEM / Part Numbers: 06A145705HP, 06A 145 705 HP, 5304 950 0001, 25654011248, 53039880058, 53039880053, 06A145704L, 06A145704LS, 06A145704LX, 06A145704S, 06A145713B, 06A145713BX, 06A145713M, K0353C, K03053C, 53039700052, 53039880052, 06A145704T, 06A145713D, 06A145713DV, 06A145713DX, 06A145713F, 06A145713FX.

Why Choose Turbo Concepts?

Unlike many bargain overseas turbos, every unit we produce is 100% built and balanced in our Michigan facility. We use upgraded internals to improve oil flow, thrust handling, and longevity — so you get factory reliability with serious performance gains.

FAQ

Q: Will this fit my car?A: Yes, if you have a transverse-mounted VW/Audi 1.8T listed in the fitment section. For AWP engine models, an upgraded silicone intake hose is highly recommended.

Q: Do I need other upgrades?A: It’s bolt-on ready, but for the full 300 WHP potential, we recommend a tune, injectors, fuel pump, and intercooler.

Q: How fast does it spool?A: Full boost potential is reached at just 2,850 RPM for lightning-fast throttle response.