Drivers/Passenger Side OEM Louver Hose Adapter

The VINTAGE AIR Drivers/Passenger Side OEM Louver Hose Adapter (part number 49870-VCI) is a precision duct adapter engineered to connect AC and heating system hoses in custom climate control installations. This adapter transitions from 2.5-inch to 3-inch duct hose sizing, making it essential for retrofitting modern HVAC systems into classic and vintage vehicles where original louver configurations require size standardization. Built from durable black plastic, this adapter maintains structural integrity under the thermal cycling and pressure fluctuations typical of automotive air conditioning systems.

The 2.5-inch to 3-inch bore transition accommodates both driver and passenger side installations, offering flexibility in vehicle retrofit applications. Measuring 3.65 x 2.25 x 5.25 inches and weighing just 0.04 pounds, the adapter integrates seamlessly into tight dashboard and heating duct pathways without adding significant weight or bulk to the system. The plastic construction provides excellent thermal stability while resisting corrosion from moisture exposure common in automotive HVAC environments. This is a single-unit adapter, allowing builders to source individual components as needed rather than committing to larger hose kits.

Hot rod builders, classic car restoration professionals, and vintage vehicle enthusiasts rely on VINTAGE AIR hose adapters to bridge compatibility gaps between modern climate control components and original vehicle designs. Whether upgrading a 1950s muscle car with contemporary A/C functionality or retrofitting a truck with period-correct heating, this louver adapter provides the precise sizing transition needed to connect dissimilar duct diameters. It addresses a common challenge in restoration work: modern aftermarket HVAC systems often use standardized 3-inch ducting, while original vehicle louver openings and ductwork require 2.5-inch connections.

VINTAGE AIR has established itself as the leading manufacturer of custom climate control systems for classic vehicles, and their OEM adapter components are engineered to work reliably within the broader ecosystem of their HVAC kits. This specific louver hose adapter is commonly paired with ductwork upgrades and dash outlet modifications when installing climate control into vehicles originally equipped with manual heating or non-functional systems. The black finish complements under-dash installations where visibility is limited, and the compact design minimizes interference with steering columns, brake lines, and other critical under-dash components.