What is the primary function of these valve cover breathers?

These breathers help to vent excess pressure that builds up inside the engine's crankcase. Releasing this pressure can prevent oil leaks and contribute to better overall engine performance and longevity.

What material are these breathers made from?

The Moroso valve cover breathers are constructed from solid brass. This material is chosen for its durability and resistance to corrosion, making it suitable for the demanding environment of an engine bay.

What size hose connects to these breathers?

These breathers feature a 3/4-inch hose barb. This is a common size for performance engine ventilation systems, allowing for easy connection to your existing or custom-routed breather hoses.

Specifications

Brand: Moroso
Part #: 68864
UPC: 084663688645

Moroso COPO 3/4in Hose Valve Cover Breathers

Name: Moroso COPO 3/4in Hose Valve Cover Breathers
Brand: Moroso
SKU: moroso-moroso-copo-3-4in-hose-valve-cover-breathers-t14-536138
Price: 222.63 USD
Availability: BackOrder

$222.63

On Backorder

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

Key Features

Fits many performance applications requiring 3/4in hose connections.
Solid brass construction offers good durability and corrosion resistance.
Designed to help vent crankcase pressure effectively.
Connects to valve covers via a 3/4-inch hose barb.
Part of Moroso's line of engine components for performance builds.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're building a high-performance engine, especially one inspired by the COPO Camaro lineage, managing crankcase pressure is key. These Moroso valve cover breathers are designed to help vent that pressure effectively. They connect to your valve covers via a 3/4-inch hose, allowing excess pressure to escape the crankcase, which can prevent oil leaks and improve overall engine health.

These breathers are built with solid brass, a material known for its durability and resistance to corrosion, ensuring they hold up in demanding engine bay conditions. The 3/4-inch hose barb is a common size for performance PCV and breather setups, making installation straightforward when you're routing your crankcase ventilation system. They are a well-built component for anyone serious about tuning their engine's internal environment.