CTS TURBO MK4 1.8T TURBO KIT

Applications: Big Turbo Hardware Kit for the MKIV 1.8T Golf and Jetta (99.5-05). Kit Features: - Garrett 50Trim T3/T4 Turbocharger - CTS 1.8T T3 Turbo Manifold - CTS 3" Stainless Steel O2 Housing, compatible with your existing downpipe - CTS 3" Inlet Pipe Kit w/ CTS Re-useable Air Filter - CTS stainless steel oil feed and drain kits - Coolant Relocation Kit - Precision 39mm external wastegate (15psi spring installed, other springs included) - Gaskets, Studs, Nuts, Clamps Note: For turbos with 4" inlet (Precision SP or GT3076R etc) we recommend using heater core fitting part number 1J0122291D to allow for heater core hose clearance. ECU TUNING IS REQUIRED! IF YOU CHOOSE TO SUPPLY YOUR OWN TURBOCHARGER, WE CANNOT GUARANTEE COMPATIBILITY. Note:  This kit has been known to fit Audi TT (180hp front wheel drive), MK2, and MK3 1.8T swaps with some installation innovation as featured in the video below. MADE TO ORDER PARTS, PRODUCTION LEAD TIME IS 4-5 WEEKS. AVAILABLE FOR LHD VEHICLES ONLY, DOES NOT RHD. MKII 1.8T AWP with T3/T4E 50Trim 63ar (344whp @ 22psi on 91 octane) - Unitronic Chipped 630cc Software

Fits These Vehicles 4 applications

GTI

Make	Model	Engine	Years
VW	GTI		1999–2006
VW	GTI (MK4)		1999–2006

JETTA GLI

Make	Model	Engine	Years
VW	JETTA GLI		1999–2005
VW	JETTA GLI (MK4)		1999–2005

Fitment data last updated: 2026-11-12

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