Boost Leak Killing Your TDI's Performance? Fix It Here.

The lower intercooler hose on the MK4 1.9L TDI is one of the most common sources of boost leaks. A cracked or collapsed hose means lost turbo pressure, sluggish acceleration, hissing under boost, and a check engine light. This is a high-impact, low-cost fix.

What You're Getting

• Lower intercooler hose/pipe for MK4 1.9L TDI
• Part number: 1J0145840G
• Cross-references: 1J0145840K, 1J0145762T
• Direct OEM-spec fit — no modifications needed
• Restores full boost pressure and turbo response

Fits

• VW Golf MK4 1.9L TDI 1999–2007
• VW Jetta MK4 1.9L TDI 1999–2005
• VW Jetta Variant 1.9L TDI 2002–2006
• Confirm fitment by part number before ordering

Why Replace It?

Intercooler hoses on the MK4 TDI harden, crack, and split with age and heat cycles. Even a small boost leak here robs your engine of power and efficiency. Left unchecked, it puts extra load on the turbocharger. A straightforward DIY swap that delivers immediate results.

Seal the leak. Get your boost back. Order today.