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

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

• Red 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 1 5/8" Aluminum Radiator Hose End Cap - Red is designed to finish the radiator neck with a clean appearance while maintaining the listed cooling system pressure rating. Its aluminum construction and makes it a functional dress-up upgrade for performance and custom engine bays.

Cooling System Pressure Control
The listed pressure rating helps the cooling system maintain proper pressure during operation. Always match the cap pressure rating to the radiator and cooling system requirements.

Clean Billet-Style Appearance
The aluminum design gives the radiator area a more finished look, making it a strong choice for detailed engine bays and show-quality builds.

Universal Radiator Fitment
This cap is intended for compatible radiator necks using the listed cap style and pressure specification. Verify cap style, pressure rating, and neck compatibility before installation.

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.