411 Works Silicone Reducer Coupler

411 Works Silicone Reducer Coupler | High-Temperature Durable | Silicone Coupler

Overview

The 411 Works Silicone Reducer Coupler is engineered for Subaru enthusiasts and fabricators who require a reliable, high-performance connection between charge pipes, intercoolers, water systems, and other critical components. Designed to withstand demanding environments, this coupler ensures a secure and flexible fit where durability and temperature resistance are paramount.

Constructed with a 4- and 5-ply design featuring three reinforced silicone layers, the coupler balances strength and flexibility to handle the rigors of boost pressure and thermal cycling. Rated for extreme temperature ranges from -120°F to +360°F, with peak performance up to +390°F (-60°C to +200°C), it stands out as a premium solution for both street and track applications. The in-house testing and burst pressure data underline 411 Works’ commitment to quality and reliability.

For Subaru owners, especially those running turbocharged WRX, STI, or Forester models, maintaining airtight and durable connections in the intake and cooling systems is critical to consistent performance. This silicone reducer coupler’s robust construction and precise sizing options provide peace of mind, ensuring your boost and cooling systems operate efficiently under all conditions.

Features & Specifications

This 411 Works Silicone Reducer Coupler is engineered for universal automotive applications and features a multi-ply reinforced silicone construction. Constructed from high-grade silicone with multiple reinforcement layers, it delivers exceptional durability and temperature resistance for Subaru enthusiasts seeking reliable and flexible hose connections.

• Brand: 411 Works
• Product: Silicone Reducer Coupler
• Part Number: 411-RC5X6
• Fitment: Universal / N/A
• Material: Reinforced Silicone
• Finish: Smooth Silicone Surface
• Construction: 4- and 5-Ply with 3 Reinforced Layers
• Origin: Not Specified
• Temperature Range: -120°F to +360°F (Peak +390°F)
• Wall Thickness: 5mm for 2" - 2-¾" sizes
• Sizes Available: ½” - 6” with varying wall thickness
• Burst Pressure Data: Available upon request

Key Benefits

• Durability: Multi-ply reinforced silicone construction resists cracking, splitting, and degradation under high heat and pressure.
• Temperature Resistance: Rated for extreme temperatures, ideal for turbocharged Subaru applications where heat cycling is common.
• Flexibility: Silicone material and layered design allow for vibration absorption and slight misalignment without failure.
• Fitment Versatility: Wide range of sizes accommodates various hose diameters, making it suitable for intercooler piping, charge pipes, and coolant lines.
• Reliability: Tested in-house to ensure consistent performance and burst pressure reliability for demanding setups.
• Subaru Compatibility: Perfect for WRX, STI, Forester, and other turbocharged Subaru models requiring robust coupler solutions.

What's Included

• 1× 411 Works Silicone Reducer Coupler (Size per SKU)

Installation & Compatibility

Installation of the 411 Works Silicone Reducer Coupler is straightforward for anyone familiar with intercooler or charge pipe work. The coupler is designed for universal fitment and requires standard hose clamps (sold separately) to secure connections. No special tools are necessary beyond typical hand tools for clamp tightening. While the coupler fits a broad range of sizes, verifying the exact diameter for your application is essential to ensure a proper seal. This product is compatible with most Subaru turbocharged platforms but is not vehicle-specific. No tuning is required for installation, but proper clamp torque and inspection for leaks after installation are recommended.

• Professional Installation: DIY-Friendly
• Modifications Required: None
• Verify Compatibility: Confirm size and application fitment before purchase

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