Dayco 78225GL Radiator Coolant Hose

Overview

Dayco 78225GL is a straight radiator coolant hose from the Straight Radiator Hose - H.D. Silicone line. It is built for heavy-duty cooling system service and cut-to-fit applications across select commercial trucks and medium-duty vehicles.

Compatible With Peterbilt 330, Peterbilt 337, Peterbilt 348, Peterbilt 567, Kenworth T270, Kenworth T370, International 7400, International WorkStar 7600, Freightliner M2 106, Freightliner M2 112, and Mack CHN/LEU applications listed below.

Key Features

• Straight radiator coolant hose for cooling system routing and replacement.
• Heavy-duty silicone construction for demanding engine bay temperatures.
• Cut-to-fit design for application-specific hose length matching.
• Fits multiple upper and lower coolant, pipe, radiator, and cooler connections.
• Dayco 78225GL is cross-referenced to common aftermarket numbers for the same application.

Detailed Description

Dayco 78225GL is a straight radiator coolant hose intended for heavy-duty cooling system service where a straight silicone hose is required. The Straight Radiator Hose - H.D. Silicone product line focuses on durable hose construction for commercial-duty cooling circuits, including engine-to-pipe, pipe-to-radiator, and cooler-to-radiator routing. This part number, 78225GL, is listed across a wide range of Peterbilt, Kenworth, International, Freightliner, and Mack fitments, making it a practical replacement choice when the original hose route and dimensions match the application.

Fits 2022-2023 Peterbilt 548, lower engine to pipe; Fits 2023 Peterbilt 567, lower pipe to oil cooler; Fits 2022 Kenworth T270, lower pipe to oil cooler; Fits 2021-2022 Kenworth T370, upper engine to pipe; Fits 2021-2022 Peterbilt 330, lower cooler to radiator; Fits 2018-2022 Peterbilt 337, lower oil cooler to radiator; Fits 2020-2022 Peterbilt 348, upper engine to pipe; Fits 2021 Kenworth T270, lower pipe to radiator; Fits 2021 Peterbilt 567, lower engine to pipe; Fits 2017 Peterbilt 567, lower engine to pipe; Fits 2019-2020 Kenworth T370, lower pipe to cooler; Fits 2012-2020 Peterbilt 330, lower oil cooler to radiator; Fits 2019-2020 Peterbilt 567, upper engine to pipe; Fits 2018-2019 International 7400, upper pipe to engine; Fits 2017 Kenworth T270, upper engine to pipe; Fits 2012 Freightliner M2 112, upper pipe to engine; Fits 2010 Freightliner M2 112, upper pipe to engine; Fits 2011 Mack LEU, lower engine to pipe; Fits 2010 International WorkStar 7600, upper engine to pipe; Fits 2007-2009 International 7400, upper engine to pipe; Fits 2007 Freightliner M2 106, upper reservoir to radiator; Fits 2005 Mack CHN, upper pipe to engine.

What It Helps Address

• Cracked or deteriorated coolant hose material.
• Leaks at straight hose routing sections.
• Cooling system service on heavy-duty trucks.
• Replacement needs for cut-to-fit hose applications.
• Routing changes where a straight hose section is required.

Installation Notes and Tips

Verify hose routing, diameter, and installed length against the original part before trimming. Because this is a cut-to-fit hose, measure carefully and test the routing path before final installation. Confirm the connection points match the listed engine, pipe, radiator, or cooler locations for your truck.

Quality Assurance

Dayco is a recognized supplier in belts and cooling components, and the 78225GL is listed with multiple cross-reference numbers for the same application, including ACDelco 31112, CARQUEST 24836, Gates 24836 and 28230, and NAPA 1536 and H19630.