The PPE 115900400 Silicone Coupling is expertly designed as a direct replacement for the factory hoses in your 2002-2004 GM 6.6L Duramax, catering to competitive and high-performance applications. Factory hoses can often succumb to the immense stress demanded by racing and competition, but PPE's hoses are engineered to outperform OEM components, capable of withstanding increased pressures.

Each PPE Performance Silicone Hose features a robust construction, reinforced with 5 plies of polyester fibers, making them exceptionally tough. The Fluorocarbon lining enhances lubricity and chemical resistance, while the silicone rubber allows these hoses to endure constant boost pressures across a temperature range from -76 degrees to +437 degrees Fahrenheit. Unlike stock hoses, PPE Performance Silicone Hoses are built to resist blowouts under extreme conditions.

• Resilient to Elements: UV & ozone resistant for durability in harsh environments.
• Robust Construction: 5-ply, 6mm wall thickness ensures strength and longevity.
• OEM Replacement: Directly replaces GM part #15198167.
• Pressure Handling: Rated to work at 70 PSI (BAR 4.8) with a burst pressure of 207 PSI (BAR 14.3).
• Chemical Resistance: Withstands exposure to fuel, oil, and various chemicals.

Note: Due to the 6mm wall thickness, hose clamps must be 1/2" larger in diameter than the hose ID for a proper fit.

Choose the PPE 115900400 Silicone Coupling for a reliable, high-performance upgrade that ensures your Duramax can handle the rigorous demands of competitive driving.