Silicone Coupler Reducer 3.50" - 4.00" X 4.00"

🔥 3.50" to 4.00" Silicone Reducer Boot – 4.00" Long, 5-Ply Reinforced for Diesel Boost Applications

This premium 3.50" ID to 4.00" ID silicone reducer boot is engineered for high-boost diesel and performance applications where durability, flexibility, and a leak-free seal are critical. At 4.00" in length and built from high-temp, 5-ply reinforced silicone, this reducer boot delivers exceptional strength to handle extreme heat, vibration, and turbocharger pressure.

Perfect for adapting mismatched piping in intercooler, intake, or charge-air systems, it’s a must-have component for reliable performance in both street and race builds.

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🔧 Key Features:

• Inside Diameter: 3.50" to 4.00"

• Overall Length: 4.00"

• 5-ply reinforced high-temperature silicone construction

• Strength-tested to withstand diesel-level boost pressure

• Smooth inner walls for optimal airflow and easy installation

• Excellent flexibility and heat resistance

• Ideal for turbo outlets, intercooler transitions, and custom charge piping

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📦 What’s Included:

• 1x 3.50" to 4.00" x 4.00" High-Temp Silicone Reducer Boot (Black)

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Get dependable sealing and long-lasting durability with this heavy-duty reducer boot—built to perform under the toughest conditions.