Shopping Cart

Your cart is empty.

Your cart is empty.

ACDelco Professional 30121 50 ft Bulk Reel of 5/16 in Straight Heater Hose, Black

4.3 (2) Write Review
Free shipping on orders over $29.99

$40.70

$ 17 .99 $17.99

In Stock

About this item

  • Carton packed or on reels for customer convenience
  • Comes with protective sleeves to help duplicate GM OE designs for proper fit and function
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function


ACDelco Professional, premium aftermarket Black Heater Hoses are constructed with EPDM rubber for extra-long service life and good resistance to high temperatures for extended periods of time. They are composed of specially blended materials to help resist electrochemical degradation (ECD), the leading cause of hose failure. ACDelco Professional Black Heater Hoses are temperature rated from -40 degrees Fahrenheit to +257 degrees Fahrenheit (-40 degrees Celsius to +125 degrees Celsius) and are unaffected by high cooling system pressures, most coolants, and non-oil based coolant additives. Do not use for fuel or oil transfer applications. These premium aftermarket replacement black heater hoses are manufactured to meet your expectations for fit, form, and function.


Laurence J R
Reviewed in the United States on August 29, 2022
I don't understand but the tube sweats oil after a brief 40psi pumping. Sweats oil for days later at 0 psi. So don't try to run oil in this hose
SG Merc
Reviewed in the United States on January 10, 2016
The hose worked well. Buying it this was gave me far more hose than I needed, but it was cheaper than buying the pre-cut sections.