Pacific Performance Engineering 515353504 3.5" ID x 4" Straight Performance Silicone Hose

The Pacific Performance Engineering 515353504 is a high-performance straight silicone coupler hose designed for custom cooling, intercooler, and intake applications. With a 3.5-inch inner diameter and 4-inch length, this premium hose features heavy-duty 6mm wall thickness with 5-ply Nomex reinforced fiber construction for exceptional durability and reliability.

Heavy-Duty Construction:

• 5-ply Nomex reinforced fiber design for superior strength
• 6mm wall thickness resists blowouts and failures
• Fluorocarbon lining provides excellent lubricity and chemical resistance
• Silicone rubber construction maintains integrity from -76°F to +437°F
• Working pressure: 70 PSI (4.8 BAR)
• Burst pressure: 207 PSI (14.3 BAR)

Performance Features:

• Handles high boost pressures, oil, fuel, and extreme temperatures
• UV and ozone resistant for long-term durability
• Higher flow and better lubricity than standard rubber hoses
• Resistant to fuel, oil, and chemicals
• Ideal for racing, towing, and heavy-duty applications

PPE's Performance Silicone Hoses are engineered to withstand the extreme demands of drag racing, sled pulling, and competitive towing while providing reliable performance for daily driving. Unlike factory hoses that can blow out under high boost pressures, this silicone hose maintains structural integrity in the most demanding conditions.

Important Installation Note: Due to the 6mm wall thickness, hose clamps must be 1/2 inch larger in diameter than the hose inner diameter for proper fit.