4.00" 90 Degree Silicone Hose - 3-Ply Blue
Specifications Part numbers, fitment codes and shipping
- Brand
- K2 Industries
- Speedzone SKU
- K2-1521-UNV-006-TSARK
- Manufacturer part number
- K2-1521-UNV-006-TSARK
- UPC
- SH-4-90-BL
- Category
- Tool Sets and Repair Kits
- Shipping weight
- 2.0 lb
4.00" 90 Degree Silicone Hose — 3-Ply Blue
Reinforced silicone elbow rated for coolant, boost, and intake applications. The 3-ply construction handles temperature swings and pressure spikes without splitting or collapsing. Smooth bore ID minimizes turbulence and flow restriction in tight engine bay routing.
Key Features
- 90-degree elbow shape — Saves space in cramped engine bays where straight hose won't fit.
- 3-ply construction — Resists bursting under sustained boost and thermal cycling.
- 4.00" diameter — Matches high-flow cooling and intake manifold ports without adapter confusion.
Specs
- Material: Silicone
- Configuration: 90 Degree Elbow
- Bore Diameter: 4.00"
- Construction: 3-Ply Reinforced
- Color: Blue
What's Included
- 1x 4.00" 90 Degree Silicone Hose
Frequently Asked Questions
Will this hose work for both coolant and boost applications?
Yes. Silicone handles coolant temps and turbo boost pressure equally well. Just confirm your specific application matches the 4.00" diameter before ordering — this is the hose only, no adapters or fittings included.
Do I need clamps, and what size should I use?
Clamps are not included. You'll need hose clamps sized for a 4.00" OD hose — most builders use band clamps or T-bolt clamps in the 4.5–5.0" range. Test-fit your setup before tightening.
Can I use this as a direct OEM replacement, or does it need modification?
This is a universal silicone elbow — it's not a plug-and-play swap for any specific vehicle. Measure your existing hose routing and port locations to confirm the 4.00" diameter and 90-degree angle work for your setup.
Full details on shipping times, returns, warranty and cancellations are on our policy page.
Market conditions after 2020 have changed the landscape of automotive parts. Although we stock thousands of items across multiple warehouses and distribution channels, back-orders are unavoidable in today's market. If you need a product quickly, email, message or call us to check availability so we can explore your options.
Email Sales@Speedzoneweb.com
Call 407-846-8430
Text 407-749-6314
Answers to common questions are on our FAQ page.
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