Metco Valve Cover Breather 1997 + LS1/LS2/etc, LT4, Metco Valve Cover Breather 1997 + LS1/LS2/etc, LT4, Metco This valve cover breather assembly replaces the original oil fill tube on the passenger side factory valve cover. The base is CNC-machined from billet aluminum for precise fit, and the included silicone O-ring is specially designed to prevent oil seepage at the base of the breather. The filter base is microfinished for surface protection and good looks, and is easily hand-polished to a mirror-like appearance. The removable filter element is a high-quality reusable unit from S & B Filters, which is securely retained in the filter base by a specially-machined retention groove in the top of the base. The purpose of this valve cover breather is to vent unwanted accumulation of pressure in the crankcase, and to provide maximum circulation of ambient air in the crankcase to reduce oil temperatures. The installation of this breather will contribute to increased engine oil life and reduce the possibility of failed engine seals resulting from excessive crankcase pressure. This breather will reduce the effectiveness of the vehicle's PCV system, and it is not emissions-legal. Note 1: On LSx applications, this breather can be installed in place of the OEM oil cap on top of the factory oil fill tube. With this installation, the factory engine cover (if equipped) can be retained. Our breather can also be installed directly in the factory valve cover without the fill tube for a cleaner look, but there will be interference with the engine cover. Note 2: This breather stand is also available with a male #10AN connection at the top instead of the provision for the breather element. This configuration is designed for use in a custom crankcase evacuation system or for use with a vacuum pump.

Metco Valve Cover Breather 1997 + LS1/LS2/etc, LT4,

Code: MBR0003
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$79.99 $69.99
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This valve cover breather assembly replaces the original oil fill tube on the passenger side factory valve cover. The base is CNC-machined from billet aluminum for precise fit, and the included silicone O-ring is specially designed to prevent oil seepage at the base of the breather. The filter base is microfinished for surface protection and good looks, and is easily hand-polished to a mirror-like appearance. The removable filter element is a high-quality reusable unit from S & B Filters, which is securely retained in the filter base by a specially-machined retention groove in the top of the base.

The purpose of this valve cover breather is to vent unwanted accumulation of pressure in the crankcase, and to provide maximum circulation of ambient air in the crankcase to reduce oil temperatures. The installation of this breather will contribute to increased engine oil life and reduce the possibility of failed engine seals resulting from excessive crankcase pressure. This breather will reduce the effectiveness of the vehicle's PCV system, and it is not emissions-legal.

Note 1: On LSx applications, this breather can be installed in place of the OEM oil cap on top of the factory oil fill tube. With this installation, the factory engine cover (if equipped) can be retained. Our breather can also be installed directly in the factory valve cover without the fill tube for a cleaner look, but there will be interference with the engine cover.

Note 2: This breather stand is also available with a male #10AN connection at the top instead of the provision for the breather element. This configuration is designed for use in a custom crankcase evacuation system or for use with a vacuum pump.

This valve cover breather assembly replaces the original oil fill tube on the passenger side factory valve cover. The base is CNC-machined from billet aluminum for precise fit, and the included silicone O-ring is specially designed to prevent oil seepage at the base of the breather. The filter base is microfinished for surface protection and good looks, and is easily hand-polished to a mirror-like appearance. The removable filter element is a high-quality reusable unit from S & B Filters, which is securely retained in the filter base by a specially-machined retention groove in the top of the base.

The purpose of this valve cover breather is to vent unwanted accumulation of pressure in the crankcase, and to provide maximum circulation of ambient air in the crankcase to reduce oil temperatures. The installation of this breather will contribute to increased engine oil life and reduce the possibility of failed engine seals resulting from excessive crankcase pressure. This breather will reduce the effectiveness of the vehicle's PCV system, and it is not emissions-legal.

Note 1: On LSx applications, this breather can be installed in place of the OEM oil cap on top of the factory oil fill tube. With this installation, the factory engine cover (if equipped) can be retained. Our breather can also be installed directly in the factory valve cover without the fill tube for a cleaner look, but there will be interference with the engine cover.

Note 2: This breather stand is also available with a male #10AN connection at the top instead of the provision for the breather element. This configuration is designed for use in a custom crankcase evacuation system or for use with a vacuum pump.