ACDelco 16244M | HVAC Heater Hose

Part Number
HVAC Heater Hose

Fits: 90-91 Cadillac Commercial Chassis, 90-93 Cadillac DeVille, 90-92 Cadillac Fleetwood, 93 Cadillac 60 Special

Special Price $28.04 Regular Price $32.99
In stock
Only 4 left
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Estimated Ship Date: 1 Business Day or Less
ACDelco Professional, premium aftermarket Molded Heater Hoses are specially designed, factory-molded hoses to fit today's smaller, tighter-fitting engine compartments. The hoses are GM OE style, meaning they are molded into the GM Original Equipment style and shape. The hoses are composed of a proprietary blend of EPDM rubber, which is a superior blend of synthetic rubber that is more pliable, ensures a longer hose life, and helps resist electrochemical degradation (ECD), the leading cause of hose failure. ACDelco Professional Molded Heater Hoses are temperature rated from -40 degrees Fahrenheit to 275 degrees Fahrenheit (-40 degrees Celsius to 135 degrees Celsius) and can be used for coolant, water, and air applications and are also approved for Marine applications. Do not use for fuel or oil transfer applications. These premium aftermarket replacement molded heater hoses are manufactured to meet your expectations for fit, form, and function.



  • Comes with a protective sleeve to help duplicate GM OE designs for proper fit and function
  • Has all the quality features of a regular coolant hose for interchangeable use
  • Installs without buckling, bending out of shape, or straining at the connection for easy installation
  • Its diameter ranges from 1/4 in to 1 in to fit different types of vehicles
  • Less than 500 part numbers cover more than 1,200 applications to maximize coverage and reduce inventory


FAQ - A1Yes, make sure the hose clamps are screwed on tightly when installing.
FAQ - A2Yes - when there's water in the hose. That's why it's important to follow the vehicle manufacturer's recommendation on the use of engine coolant.
FAQ - A3No, use the hose in the way it's listed in the ACDelco belts and hoses catalog.
FAQ - A4Yes, this requires inspection, though. When the engine is cool, squeeze the hoses with your thumb and forefinger near the clamps. Feel for soft or mushy spots. A good hose will have a firm yet pliant feel. Also, Inspect for cracks, nicks, bulges (usually while hot), or a collapsed section in the hose and oil contamination, or fraying near the connection points.
FAQ - A5No
FAQ - A6No
FAQ - Q1Can an automotive hose detach during use?
FAQ - Q2Can an automotive hose freeze in the winter?
FAQ - Q3Can I use the same automotive hose for multiple uses?
FAQ - Q4Will I know when it is time to replace an automotive hose?
FAQ - Q5Are there steps I can take to ensure a longer automotive hose life?
FAQ - Q6Will a worn automotive hose affect gas mileage?
Good Maintenance Practices - S1 B1Examine hoses every 12 months. Look for leaks, cracks, or rot. Replace when showing signs of wear.
Good Maintenance Practices - S1 B2Tighten any loose clamps. Replace clamps when replacing hoses.
Good Maintenance Practices - S1 B3Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating.
Good Maintenance Practices - S1 B4Periodically remove bugs, leaves, and other debris from the front of the radiator. They can block airflow and substantially reduce cooling efficiency.
Good Maintenance Practices - S1 B5Though electrochemical degradation occurs from the inside out, you can feel for voids, cracks, or weak spots. Squeeze the hose with your thumb and two or three fingers. If you're not sure, remove the hose and check it visually.
Marketing Statement - Product LineBuilt to meet the latest demands, ACDelco's Belts and Hoses line includes automotive belts and hoses, tensioners, pulleys, and kits. ACDelco offers a wide variety of Professional premium, aftermarket parts, and a select offering of GM Original Equipment Belts that fit a variety of vehicles on the road today.
Marketing Statement - Sub BrandWhen it comes to replacing your Belts, ACDelco offers a full line of Professional, premium aftermarket Belt products. To help make part replacement simple and precise, ACDelco also offers pulleys, tensioners, and kits. ACDelco Professional, premium aftermarket belts fit both GM and Non GM vehicles.
Measurements3/4 in x 1 in x 15 19/32 in
Mkt_State_Warranty_CALimited Lifetime Warranty as long as original purchaser still owns vehicle (Parts Only).
Mkt_State_Warranty_USLimited Lifetime as long as original purchaser owns vehicle. (Parts Only)
Signs of Wear & Troubleshooting - S1 B1Signs of electrochemical degradation include voids, cracks, or weak spots on the inside of the hose.
Signs of Wear & Troubleshooting - S1 B2Signs of internal heat damage include slight swelling of the hose cover.
Signs of Wear & Troubleshooting - S1 B3Signs of external heat damage include hardening or cracking of the hose cover.
Signs of Wear & Troubleshooting - S1 B4Other signs of wear include oil damage, abrasion damage, brittleness, lack of heat/cooling within the cabin, ozone damage, and leakage of the hose.
Usage ChartPL35_UC_AutoHoses.jpg



  • 1991-1991 Cadillac Commercial Chassis - Position: Tee To Engine
  • 1990-1990 Cadillac Commercial Chassis - Position: Tee-2 To Engine
  • 1993-1993 Cadillac 60 Special - Position: Tee To Engine
  • 1991-1993 Cadillac DeVille - Position: Tee To Engine
  • 1990-1990 Cadillac DeVille - Position: Tee-2 To Engine
  • 1990-1990 Cadillac Fleetwood - Position: Tee-2 To Engine
  • 1991-1992 Cadillac Fleetwood - Position: Tee To Engine
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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