Vibrant Performance 2839 4-Ply Silicone Reducer Coupler, 3-1/4 in to 4 in ID, 3 in Long, Black

The Vibrant Performance 2839 tubing coupler is a straight reducer designed to connect tubing with different inside diameters. It transitions from a 3-1/4-inch inside diameter to a 4-inch inside diameter and provides a dependable connection for custom intake, turbo, intercooler, and other high-performance tubing systems. Its black silicone construction delivers flexibility while helping maintain a secure seal under demanding operating conditions.
The 4-ply reinforced design offers added strength and durability compared with standard single-layer couplers. The straight reducer profile supports clean, practical installations where tubing sizes need to be adapted without complex fabrication. With a 3-inch overall length, the coupler provides sufficient engagement for clamps and tubing while helping maintain a compact layout in tight engine compartments.
Ideal for automotive performance applications, the Vibrant Performance 2839 reducer coupler can be used with compatible tubing and properly sized clamps. Its smooth interior promotes consistent airflow, while the flexible silicone material helps accommodate minor alignment differences during installation. Inspect all mating surfaces and secure both ends with suitable clamps for the best results.
Feature: Straight reducer coupler
Feature: Connects 3-1/4-inch and 4-inch inside-diameter tubing
Feature: 4-ply reinforced silicone construction
Feature: Black finish
Feature: 3-inch overall length
Feature: Designed for custom automotive tubing and performance applications
Feature: Sold individually

Features:

• Straight reducer coupler

• Connects 3-1/4-inch and 4-inch inside-diameter tubing

• 4-ply reinforced silicone construction

• Black finish

• 3-inch overall length

• Designed for custom automotive tubing and performance applications

• Sold individually