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Metco Motorsports MBR0003

Billet Valve Cover Breather 1997 and Newer LS1/LS2/etc, LT4, 1989 Turbo Trans Am, Pontiac G8, Ecotec

Metco Motorsports MBR0003

681-MBR0003

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Metco Motorsports MBR0003 Billet Valve Cover Breather 1997 and Newer LS1/LS2/etc, LT4, 1989 Turbo Trans Am, Pontiac G8, Ecotec $69.99
Billet Valve Cover Breather
  • 1997 and Newer LS1/LS2/etc, LT4, 1989 Turbo Trans Am, Pontiac G8, Ecotec

  • Metco Motorsports MBR0003 Details

    Direct Fit Application

    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 may 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. Please see Metco Motorsports PN MBR0003-10AN, listed elsewhere in this section. If your vehicle is equipped with aftermarket valve covers using a screw-in thread, please see the MBR0015 breather, also listed elsewhere in this section.

    Note 3: Early LS valve covers have only one locating tab in the oil fill tube. With just one tab, the breather can rock slightly when installed. This slight movement is not an issue and the breather will not leak at the base. Later LS covers have two tabs to positively position the breather.

    Specifications:

    Manufacturer's Part Number:
    MBR0003

    The base of the breather is CNC-machined from billet aluminum for a precise fit, and the included silicone O-ring is specially designed to prevent seepage at the base of the filter. The filter base is micro-finished 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, and the filter is securely retained to the filter base by a specially-machined retention groove in the top of the filter base.

    MBR0003 - Metco Motorsports Billet Valve Cover Breathers is rated 5.0 out of 5 by 2.
    Rated 5 out of 5 by from Just what I needed I bought this to fix the excess crankcase pressure I was still having even with both valve covers being vented. This product fits perfectly in place of the stock ls3 oil fill cap and quality and finish is second to none. Very pleased with my purchase.
    Date published: 2015-09-07
    Rated 5 out of 5 by from Nicely made! Very clean and nicely made! I bought this for my '01 SS. It can be installed directly on the valve cover or on the oil filler neck. If you have a strut tower brace you will have to remove the valve cover and remove the filler neck by lifting up the release tab in order to use this breather.
    Date published: 2015-06-14
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