3.75" Black/Red 3-Ply Silicone Hose - Straight
K2 Industries
3.75" Black/Red 3-Ply Silicone Hose - Straight
Check fitment before ordering
Match the year, make, model, trim and engine in the product details. Review mounting requirements and vehicle modifications. Ask us about this part.
Eligible returns within 30 days of receipt. Items must be unused, with tags and original packaging. Contact Lee Mods before sending anything back. Lee Mods pays return shipping for eligible U.S. returns; no restocking fee. See Returns & Exchanges for full conditions.
3.75" Black/Red 3-Ply Silicone Hose — Straight
High-temperature silicone hose designed for coolant, intercooler, and boost applications. The 3-ply construction handles sustained heat and pressure spikes without cracking or splitting. Black exterior with red inner core identifies it instantly on the engine bay.
Key Features
- 3-Ply silicone blend - Resists oil, coolant, and extreme temperatures without degradation
- Straight configuration - No bends; pairs with elbows and adapters for custom routing
- 3.75" diameter - Matched to medium-flow cooling and turbo applications
Specs
- Material: Silicone
- Configuration: Straight section
- Diameter: 3.75"
- Ply Count: 3-ply
- Color: Black exterior, red interior
What's Included
- 1x Silicone hose straight section
Frequently Asked Questions
What clamps work with this hose?
T-bolt or band clamps rated for 3.75" diameter. Stainless steel or zinc-plated clamps prevent corrosion. Tighten in a cross pattern to avoid pinching the silicone.
Does this hose come with end fittings or adapters?
Straight hose section only—no fittings included. You'll source elbows, barbed adapters, or threaded couplers separately to connect your coolant or boost lines.
Can I use this for both coolant and boost lines?
Yes. The 3-ply silicone handles coolant loop temperatures and intercooler boost pressure. Confirm your system's max pressure rating against the hose's burst tolerance before final installation.
Your vehicle
Select a vehicle to check the supplied application records for this part.
Choose or change vehicle →Product reference & ordering help
Supplier & part identification
K2 Industries
| Option | SKU / part reference |
|---|---|
| Standard | K2-1509-UNV-006-TSARK |
Vehicle compatibility
Read the application years, model, trim, engine and exclusions in the description above. A make-level collection or product recommendation alone does not confirm fitment.
Request fitment help →Installation & specifications
Review the manufacturer’s specifications and installation notes above. Confirm required mounting hardware, tools and modifications before ordering. If instructions are not supplied, contact us with the part reference.
Shipping expectations
Processing and delivery vary by product, supplier and destination. Contact us to confirm timing for your part before planning an installation.
Shipping & delivery informationManufacturer warranty
Coverage and exclusions vary by manufacturer and part. Review the supplied product documentation or ask us for the applicable terms.
Warranty information