Coyote 3″ Step-Up Adapter (03-1893)

Description

Overview

The Coyote 03-1893 Step-Up Adapter bridges the gap between smaller HVAC outlets and larger duct runs.
Because it expands airflow from 2½″ to 3″, it reduces static pressure and improves overall system efficiency.
It’s a simple, cost-effective solution for adapting mixed-diameter components while maintaining professional fit and finish.

Function and Performance

This step-up adapter features a smooth internal taper that transitions airflow evenly from one diameter to the next.
As a result, it prevents turbulence and backpressure while maintaining full system volume.
In addition, the stepped design ensures a snug compression seal that minimizes air leaks and vibration.
Therefore, the 03-1893 improves both airflow and sound quality inside the HVAC system.

Durability and Design

Coyote manufactures the 03-1893 adapter from heavy-duty black ABS plastic formulated to withstand vibration, heat, and UV exposure.
Because of its precise molding and uniform wall thickness, it maintains dimensional stability through temperature changes.
This rugged yet lightweight construction makes it reliable for both OEM production and field retrofits.

Installation

Installation is quick and straightforward.
Insert the smaller 2½″ end into the existing hose or outlet, then attach the larger 3″ end to the ducting.
The adapter’s stepped shape forms a natural friction fit that holds securely under vibration.
Technicians can add clamps or sealant for permanent installations when needed.

Applications

The Coyote 03-1893 3″ Step-Up Adapter is used across bus, RV, agricultural, off-road, and industrial HVAC systems.
It’s perfect for transitioning smaller evaporator outlets or louvers to larger ducts to boost air movement and coverage.

Specifications

• Series: Step Adapters

• Part Number: 03-1893

• Size: 2½″ (63.5 mm) to 3″ (76 mm)

• Material: Black ABS plastic

• Function: Step-up transition between hose or duct sizes

• Applications: Bus, RV, truck, off-road, and industrial HVAC

• Features: Smooth airflow, tight seal, easy installation, durable ABS construction