1 5/8" Aluminum Radiator Hose End Cap - Blue

• Aluminum end cap seals off an unused 1 5/8" radiator hose connection point

• Blue finish gives a clean, finished look to a capped-off hose end

• Universal fit for any 1 5/8" radiator hose being blocked off or deleted

• Simple push-on installation with a hose clamp for a secure seal

This aluminum radiator hose end cap seals off an unused 1 5/8" radiator hose connection point, commonly used when deleting a radiator port, bypassing a hose run, or simplifying a cooling system layout. The blue finish gives the capped-off hose end a clean, finished appearance rather than leaving it looking makeshift.

This is a universal-fit cap sized for 1 5/8" radiator hose — confirm your hose's inside diameter matches before ordering. This cap seals the hose end; it does not regulate cooling system pressure the way a radiator cap does, and shouldn't be confused with one.

Common Uses
Used when deleting a radiator port, capping off an unused radiator hose connection, or simplifying a cooling system's hose routing during a custom build or swap. Confirm your hose is genuinely intended to be capped rather than connected elsewhere before installing.

Installation
Push the cap onto the 1 5/8" hose end and secure with a hose clamp for a leak-free seal. Confirm hose diameter matches 1 5/8" before installing, since a mismatched size won't seal properly even with a tight clamp.

What is this cap used for?
This cap is used to seal an unused 1 5/8" radiator hose connection, such as when blocking off an unused radiator port or simplifying custom cooling-system hose routing.

Is this the same as a radiator cap?
No — this is a hose block-off cap. It seals an unused hose connection and does not regulate cooling-system pressure like a radiator pressure cap.

What hose size does this cap fit?
This cap is designed for a 1 5/8" diameter radiator hose connection.

Can this be used to cap off a heater hose instead of a radiator hose?
Potentially, provided the connection is the correct 1 5/8" diameter and the cap is suitable for the cooling system's temperature and pressure. Most heater-hose connections are considerably smaller, so verify the actual diameter before ordering.