Coyote 2½″ Flex Hose Defrost Plenum (03-1838)

Description

Overview

The Coyote 03-1838 Defrost Plenum routes warm or cool air from a 2½″ flexible hose to multiple defrost vents.
Because the internal chamber balances air pressure, it clears condensation and frost quickly and evenly across the windshield.
This plenum’s compact body fits neatly behind dashboards and instrument panels.

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Function and Performance

This defrost plenum connects directly to a 2½-inch hose and splits airflow between two molded outlets.
The internal curve ensures smooth air delivery with minimal turbulence.
As a result, operators get clear, quiet airflow for better visibility and faster warm-up times.
In addition, the smooth bore and wide openings reduce static pressure for efficient system performance.

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Durability and Design

Coyote molds the 03-1838 plenum from heat-stable, impact-resistant ABS plastic engineered to handle vibration, temperature extremes, and UV exposure.
Because the material keeps its shape under stress, the plenum maintains a tight, leak-free connection over years of use.
The one-piece molded design prevents seam leaks and provides lasting reliability.

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Installation

Installation is simple and quick.
Connect the 2½″ flexible hose to the inlet and fasten with a clamp or tie.
Align the dual outlets with the defrost duct openings and secure with standard hardware.
Its low-profile shape allows easy placement in tight dashboard or headliner spaces.

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Applications

The Coyote 03-1838 2½″ Flex Hose Defrost Plenum is used in buses, RVs, construction cabs, ag machinery, and heavy-duty HVAC systems.
It’s ideal for defrost and defog applications, dash ducting, and custom cab installations where even airflow and reliability are essential.

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Specifications

• Series: Air Distribution Components

• Part Number: 03-1838

• Inlet Size: 2½″ (63.5 mm)

• Outlet Type: Dual defrost outlets

• Material: Black ABS plastic

• Function: Distributes HVAC airflow to defrost vents

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

• Features: Smooth airflow, balanced distribution, durable construction, compact design