3.00" to 4.00" Silicone Reducer Hose 3-Ply Red

$79.99
$79.99
$100.00
Sold Out
Best Price Promise Found an eligible lower retail price? We'll match it.
Your order qualifies for FREEexpedited shipping
Free Returns Eligible items in the contiguous U.S. 60-day return policy.
Earn 79 points with this purchase GCA Rewards ›
3.00" to 4.00" Silicone Reducer Hose — 3-Ply Red

Stepped silicone hose for smooth diameter transitions in coolant, vacuum, and boost lines. 3-ply construction handles heat and pressure spikes without collapse. Red compound resists ozone and UV degradation in engine bays.

✓ Ships from FL Warehouse ✓ 3-Ply Reinforced ✓ Direct-from-Warehouse
Key Features
  • 3.00" to 4.00" step - Bridges mismatched hose or fitting sizes without adapters or coupling rings
  • 3-ply silicone core - Resists high-temp coolant, vacuum draw, and light boost pressure without pinching
  • Red compound - Withstands prolonged UV and ozone exposure; visibility in engine bay
Specs
  • Material: Silicone
  • Configuration: Reducer (stepped bore)
  • Ply: 3-ply reinforced
  • Color: Red
What's Included
  • 1x Silicone Reducer Hose (3.00" to 4.00")
Frequently Asked Questions

Do I need clamps for this hose?

Yes. Use worm-gear or spring hose clamps sized for both the 3.00" and 4.00" ends — one at each diameter to seal properly. Clamps are sold separately.

Can I use this for boost lines on a turbo setup?

This hose handles light boost pressure, but confirm your system's PSI rating before install. For sustained high-boost applications, verify the 3-ply rating matches your turbo's spec sheet.

What's the length of this reducer?

Length not specified in the product data — measure your application before ordering to ensure it bridges your gap. Test-fit length against your intake tract or coolant routing before final clamping.