Radiator Pressure Cap — OEM-grade Cooling Seal

Keep your engine safe from heat and leaks with this precision radiator pressure cap. It locks pressure at the correct rating (about 1.1 bar/16 psi),lifts the coolant boiling point, and maintains a closed system so your Honda runs cool and clean .

Why you need it ❄️

Without the right pressure, coolant can boil, push out into the reservoir, and leave the radiator low. This cap seals the neck, stabilizes pressure, and ensures coolant returns from the overflow tank as the engine cools. It protects gaskets, hoses, and the water pump.

How it works

A spring-loaded pressure valve holds pressure while hot; a vacuum valve opens on cool-down to draw coolant back from the bottle. Heat-resistant EPDM seals and a stainless spring deliver steady performance through thousands of cycles. Simple to install: only remove when the engine is fully cold.

What happens if it fails ⚠️

Symptoms include overheating, coolant smell, stains around the neck, collapsed upper hose, weak cabin heat, and frequent top-ups. Long term, you risk warped head, blown gasket, and sludge. Replace every 5 years or at first sign of wear for peace of mind ✅.

Compatible models

• Civic Coupe
• Civic
• Odyssey
• Accord
• S2000
• Hr-V
• Prelude
• Insight
• Civic Hybrid
• Stream
• Accord Coupe
• Cr-V
• Mr-V
• Accord Tourer
• Integra
• Shuttle
• Legend
• 3.5Rl
• Accord/Hybrid
• Civic/Hybrid
• Pilot
• Ridgeline
• Element
• Civic 3D
• Civic Ferio
• Partner
• Accord 4D
• Torneo
• Accord Wagon
• Saber
• Lagreat
• Civic Gx
• Capa
• Hr-V 3D
• Life Dunk
• Avancier
• Acty Truck
• Acty Van
• Odyssey Almas
• Mdx
• Step Wgn F.d.
• Hr-V 5D
• Integra Sj
• Odyssey F.d/T.h
• Civic 5D Almas
• Integra 3D
• S-Mx
• Domani
• Stream Almas
• Vamos
• Vamos Hobio
• That's Almas
• Accord 4D Almas
• Accord Wgn Alma
• Life Almas
• Inspire Almas
• Legend 4D
• Elysion
• Integra 4D
• Inspire
• Step Wgn
• City