Mk4 GTI 1.8T Turbo Replacement

Complete guide to replacing the K04 turbo on your Mk4 GTI.

Tools Needed

• Socket set
• Torque wrench
• Heat gun
• Penetrating oil
• New turbo gaskets

Difficulty: Hard

• Time Estimate: 6-8 hours

Steps

1. Preparation

1. Disconnect battery
2. Support engine from above
3. Remove intercooler pipes
4. Remove catalytic converter

2. Remove Old Turbo

1. Remove oil feed line
2. Remove oil drain line
3. Remove exhaust manifold nuts
4. Remove turbo bolts
5. Lower turbo assembly

3. Install New Turbo

1. Clean mating surfaces
2. Install new gaskets
3. Mount new turbo
4. Reconnect oil lines
5. Reconnect intercooler

4. Fill Oil System

Before starting, prime the turbo with oil.

5. Initial Run

Let idle for 2 minutes. Check for leaks.