Coolant Bypass Tube

Water Pump to Thermostat Housing

2011-2016 6.6L Duramax LML

Features

• Polished 304 stainless steel
• Hydroformed for exact fitment
• Comes with both upper and lower O-rings

The OEM mild steel tube rusts and contaminates the coolant system. The OEM O-rings can also harden and lose compression over time, causing coolant leaks. Replace with the PPE

Stainless-Steel Coolant Bypass Tube for a permanent fix.