Heavy-Duty HVAC Heater Hose, OE-Standard Build. The World American WA911-24-0003 is a blue heater hose designed for commercial and heavy-duty truck HVAC heating circuits. Featuring a 1-inch inner diameter and 25-foot length, it is produced to strict OE standards to match original equipment performance. Each hose undergoes rigorous pre-shipment quality control to verify fitment, accuracy, and reliability, supporting fewer comebacks and consistent field performance. Supplied by World American—the heavy-duty division of Midwest Truck & Auto Parts, Inc.—this hose is built for demanding fleet service and weighs 8.13 lb.

Fleet Serviceability & Fit. The 1-inch ID provides compatibility with common heavy-duty heater cores and fittings, while the 25-foot length offers flexibility to cut to required runs and minimize splices. The blue color provides fast visual identification of the heater circuit during troubleshooting and repairs. For sourcing and cross-reference, this hose aligns with Newstar KW-HE3950. Its OE-aligned engineering approach and controlled manufacturing process help maintain reliable cabin heat flow and support uptime in vocational, regional haul, and long-haul applications.

Trusted Heavy-Duty Supply. Backed by World American’s rigorous manufacturing oversight and final inspection, WA911-24-0003 delivers consistent quality for replacement programs and preventive maintenance. Specify this hose when standardizing heater plumbing across mixed fleets that require 1-inch ID, ensuring repeatable installation and inventory efficiency from a single 25-foot length.