Coolant Bypass Tube - Water Pump to Thermostat Housing 2011-2016 GM 6.6L Duramax LML Pacific Performance Engineering 2020 It's a direct bolt-on enhancement

It's a direct bolt-on enhancement with no cutting or modifications needed

Includes two stainless steel band clamps

5 Inch ID Performance Silicone Hose - 90 Degree (515151590)

Complete with bearing

The best part about the PPE Standard Xcelerator is that it will optimize a stock engine's performance

Coolant Bypass Tube - Water Pump to Thermostat Housing 2011-2016 GM 6.6L Duramax LML Pacific Performance Engineering 2020 It's a direct bolt-on enhancementThe OEM mild steel tube is prone to rust, which can lead to coolant system contamination and eventual leaks. Over time, factory O rings also tend to harden and lose compression, increasing the risk of failure. PPEs upgraded bypass tube is specifically designed to work with the factory water pump and is crafted from high grade 304 stainless to prevent corrosion and ensure reliable, long term performance. OEM PN for Reference: GM 12633704 Features: