Aeroflow Silicone Heater Hose Block Off Cap 3/4" 19mm I.D AF9289-075-01

Aeroflow Silicone Heater Hose Block Off Cap 3/4" 19mm I.D

The Aeroflow reinforced silicone heater block off cap is designed for coolant, water, air, vacuum ports, throttle body water ports, heater cores, and much more. While it resembles traditional vacuum caps, the internal material is specifically crafted for installation within your cooling system. Manufactured similarly to Aeroflow's reinforced silicone heater hoses, this block off cap features three layers of polyester webbing for added reinforcement, ensuring it can withstand the high temperatures and pressures of your cooling system for years to come.

These silicone block off caps are not compatible with fuel, oil, or any petroleum-based products.

Key features

• Reinforced silicone construction for durability and longevity.
• Three layers of polyester webbing for high-pressure resistance.
• Suitable for a variety of applications including coolant and vacuum ports.
• Designed specifically for cooling system use, ensuring optimal performance.
• Easy to install, making it ideal for DIY enthusiasts and professionals alike.

Technical details

• Internal diameter: 3/4" (19mm).
• Material: Reinforced silicone with polyester webbing.
• Temperature resistant for high-performance applications.
• Not suitable for use with petroleum-based products.

Applications / fitment

This block off cap is typically used in various automotive and mechanical applications where coolant or vacuum lines need to be sealed.

• Passenger vehicles.
• 4x4 vehicles.
• Performance and racing applications.
• Heater core systems.
• Throttle body water ports.

Why buy from Mick’s Gone Bush?

• Trusted Australian business focused on reliable power, auto-electrical, and service parts.
• Stock sourced from reputable distributors and brands.
• Practical support for trade, off-grid, and fleet customers.
• Clear shipping, warranty, and customer service.

Frequently asked questions

What is the purpose of the Aeroflow Silicone Heater Hose Block Off Cap?

The Aeroflow Silicone Heater Hose Block Off Cap is designed to seal coolant, water, and vacuum ports in various automotive applications.

Can this cap be used with fuel or oil?

No, this block off cap is not compatible with fuel, oil, or any petroleum-based products.

How do I install the block off cap?

Simply slide the cap over the desired hose or port and ensure it fits securely to create a proper seal.

What temperature can the silicone withstand?

The reinforced silicone is designed to withstand high temperatures typically found in cooling systems.

Is this product suitable for racing applications?

Yes, the Aeroflow Silicone Heater Hose Block Off Cap is ideal for performance and racing applications due to its durability.