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SKU: 19743 | UPC: 690092178680
Vibrant Silicone Reducer Coupler 4.50in ID x 4.00in ID x 4.50in Long - Black - Universal Fit
The Vibrant Performance Aramid Reinforced Silicone Transition Hose Coupler connects 4.50 inch to 4.00 inch pipes in custom air intake intercooler and turbo setups. This black reducer measures 4.50 inches long for smooth transitions in performance applications. It withstands extreme heat and pressure for reliable airflow on any vehicle with compatible piping.
Key Features
- Aramid Reinforcement: Layered fabric between silicone provides high burst strength up to 100 PSI and resists collapse under boost.
- Temperature Range: Operates from -75 Degrees F to 392 Degrees F (-60 Degrees C to 200 Degrees C) for track or street use.
- Exact Dimensions: 4.50in large ID to 4.00in small ID x 4.50in length ensures precise fit in tight engine bays.
- Black Silicone Construction: Durable outer layer matches black powdercoated aluminum pipes for factory-style appearance.
- Multi-Service Rated: Handles air coolant and water without degradation in approved systems.
Product Notes
- Suitable for water coolant and air service only not for fuel or oil.
- Store flat to maintain shape clean with mild soap and water.
- Lightweight design ships compactly in protective sleeve.
Installation Notes
- Professional installation recommended.
- Use 4 inch and 4.50 inch stainless steel worm gear clamps sold separately.
- Heat pipes lightly with heat gun for easier fit on cold engines.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Subaru | STI | Turbo Intercooler Piping |
| Universal | Mitsubishi | Evo | Turbo Kit |
| Universal | Honda | Civic Si | Turbo Kit |
| Universal | All | All | Custom Turbo Intercooler Air Intake Piping |
Why Choose Vibrant Performance?
- Established leader in intake and exhaust components since 1983.
- Hand-layered silicone construction for consistent wall thickness.
- Tested in racing environments for long-term reliability.
Frequently Asked Questions
-
Q: What vehicles does the 19743 coupler fit?
A: Universal design works on any setup with 4.50in to 4.00in piping including Subaru STI Mitsubishi Evo Honda Civic Si turbo kits and custom intercoolers. -
Q: What material makes up this reducer?
A: Multi-ply black silicone with embedded aramid fabric reinforcement for flexibility strength and heat resistance. -
Q: What warranty covers this part?
A: Vibrant Performance limited lifetime warranty against manufacturing defects when installed and used correctly.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective poly sleeve dimensions 6in x 6in x 2in
- Weight: 0.35 lbs
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