What is the primary function of this lower radiator hose?

The lower radiator hose connects the bottom of the radiator to the engine's water pump. It allows cooled coolant to flow from the radiator back into the engine to continue the cooling cycle.

Why is a molded hose important for this application?

A molded hose has a specific shape designed to fit the contours of the engine bay and clear other components. This prevents the hose from kinking or rubbing, ensuring consistent coolant flow and preventing premature wear.

Does this hose come with clamps?

This product includes the molded coolant hose only. You will need to purchase suitable radiator hose clamps separately to secure the hose to the radiator and water pump connections.

Gates Molded Coolant Hose 20841 - Chevrolet C/K 1973-1983

Name: Gates 73-79 Chevrolet C & K Series Pickup 6-Cyl. 250 Lower Molded Coolant Hose
Brand: Gates
Price: 21.02 USD
Availability: InStock

Gates 73-79 Chevrolet C & K Series Pickup 6-Cyl. 250 Lower Molded Coolant Hose

$21.02

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Gates 73-79 Chevrolet C & K Series Pickup 6-Cyl. 250 Lower Molded Coolant Hose

Key Features

Fits 1973-1983 Chevrolet C/K series trucks, Blazers, Suburbans, and more.
Designed for 6-cylinder, 250 cubic inch engines.
Molded shape ensures proper routing and prevents kinking.
Durable rubber construction withstands heat and pressure.
Direct replacement for the original lower radiator hose.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

This is the lower radiator hose from Gates, part number 20841. It's specifically molded to fit the 6-cylinder, 250 cubic inch engine found in a wide range of Chevrolet and GMC vehicles from the mid-70s to early 80s. If you're working on a classic C/K series truck, a Blazer, or even some passenger cars from that era, this hose is designed to route coolant correctly from the radiator to the engine block.

Gates makes these hoses with durable rubber compounds that can handle the heat and pressure cycles of your cooling system. Because it's a molded hose, it has the specific bends and curves needed to clear other engine components and avoid kinking, which is crucial for maintaining proper coolant flow. A kinked or collapsed hose can quickly lead to overheating, so using the right shape is important for reliable operation.

This hose is a direct replacement for the original equipment part, meaning it should fit right without any modifications. It's a solid option for anyone restoring or repairing their cooling system on these popular GM vehicles.