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SKU: 19738 | UPC: 690092178635
Vibrant Silicone Reducer Coupler 4.00in ID x 3.00in ID x 4.50in Long - Black
This Vibrant Performance aramid reinforced silicone transition hose coupler smoothly reduces from 4.00 inch ID to 3.00 inch ID over 4.50 inches for seamless connections in custom setups. It handles air intake systems intercooler piping and coolant lines with reliable performance across extreme conditions. Engineered for high boost applications it maintains flexibility and seal under pressure.
Key Features
- Aramid Reinforcement: Four layers of high temperature resistant aramid fabric between silicone provide superior burst strength flexibility and resistance to cracking under boost
- Temperature Range: Functions from -75 Degrees F to 392 Degrees F (-60 Degrees C to 200 Degrees C) for hot engine bays cold weather and track abuse
- Precise Sizing: 4.00in large ID to 3.00in small ID over 4.50in length with 0.240in wall thickness fits tight spaces in turbo inlets throttle transitions and piping
- Black Silicone Construction: Professional matte black finish resists UV ozone abrasion and weathering for long lasting appearance and function
- Service Compatibility: Rated for water coolant and air applications in performance plumbing ensures airtight seals without degradation
Product Notes
- Use constant tension spring clamps or T-bolt clamps rated for silicone sold separately for secure hold
- Inspect regularly and replace if exposed to fuel or oil as silicone is not compatible
- Compact design ships flat in protective packaging to arrive ready to install
Installation Notes
- Professional installation recommended.
- Lubricate with silicone safe spray apply clamps evenly torqued to 50 in-lbs for leak free seal
- Works with aluminum mandrel bent pipes stainless steel and plastic composites common in intakes
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Applications | Air Intake Intercooler Coolant Piping |
Why Choose Vibrant Performance?
- Proven in NHRA drag racing and street performance for decades
- Hand layered construction exceeds SAE J200 standards for durability
- USA manufactured with exact molds for consistent shape and wall thickness
Frequently Asked Questions
-
Q: Will this coupler work on my turbo intake setup?
A: Yes as a universal part it fits any 4in to 3in reduction needs like turbo compressor outlets throttle bodies or intercooler pipes on boosted vehicles -
Q: What material makes up the reinforcement?
A: High temperature aramid fabric similar to Kevlar layered between silicone plies for 100 PSI burst resistance and full flexibility -
Q: What warranty coverage applies?
A: Limited lifetime warranty against material and manufacturing defects when installed and used as intended for air water coolant
Shipping & Handling
- Method: UPS Ground USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective poly bag in 6in x 6in x 2in mailer
- Weight: 0.42 lbs
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