This valve cover breather assembly replaces the original oil fill cap found on the passenger side of the 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 the specially-machined retention groove at 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.

The kit includes (2) tube plugs needed to seal the vent line between the air inlet boot & driver's side valve cover, which is recommended when the breather is installed.

Note: 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 MBR0004-10AN, listed elsewhere in this section.

Metco 03-04 Cobra Alternator Pulley 2-4lb Lower Pulley (3.20")

Alternator pulley for use with oversize crankshaft pulleys to reduce alternator revolutions.

Fetures Include:

Pulley is CNC machined from 6061-T6 aluminum for light reciprocating weight, accuracy and minimum run out

Black anodized for appearance and superior surface protection

Kit come complete with spacer and lock washer

Most cases will require use of a slighlty longer belt

Metco 03-04 Cobra Alternator Pulley 6lb Lower Pulley (3.50")

Alternator pulley for use with oversize crankshaft pulleys to reduce alternator revolutions.

Fetures Include:

Pulley is CNC machined from 6061-T6 aluminum for light reciprocating weight, accuracy and minimum run out

Black anodized for appearance and superior surface protection

Kit come complete with spacer and lock washer

Most cases will require use of a slighlty longer belt

Metco 03-04 Cobra Alternator Pulley 8-10lb Lower Pulley (3.70")

Alternator pulley for use with oversize crankshaft pulleys to reduce alternator revolutions.

Fetures Include:

Pulley is CNC machined from 6061-T6 aluminum for light reciprocating weight, accuracy and minimum run out

Black anodized for appearance and superior surface protection

Kit come complete with spacer and lock washer

Most cases will require use of a slighlty longer belt

Metco 99-04 Mustang Fuel Pressure Gauge Adaptor

Most aftermarket fuel rails don't have a schrader valve on the fuel rail for you to connect a fuel pressure gauge to. So Metco Motorsports has developed a Billet Adaptor which will allow you to hook up a fuel pressure gauge without any hassle at all. Machined from Billet Aluminum and designed to fit in between the fuel rail and fuel rail pressure sensor your problems are solved. The adaptor also comes with 2 ports so you could run a fuel pressure gauge as well as hookup a wet nitrous kit to it.

Comes with all bolts and hardware for a simple bolt-on installation.

Metco Motorsports 05-09 Mustang GT Fuel Rail Adapter

This two-piece adapter is custom made to facilitate the installation of aftermarket fuel rail kits on vehicles using the factory fuel feed line. The adapter installs at the front of the driver's side fuel rail and mates directly with the OEM feed line.

Metco 08-09 G8 GT Valve Cover Breather

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 the removable filter element is a high-quality reusable unit from S & B Filters.

Metco Tensioner Support Plate

Fits Lightning & HD F150, 2003-2004 Mustang Cobra, 2005 and Newer 3V Mustang

This billet aluminum plate was designed as a solution to the problem of the factory Ford belt tensioner deflecting under load in supercharged applications.  The factory tensioner arm tends to flex toward the front of the vehicle under heavy belt loads, and adding boost with custom pulleys or adding an aftermarket supercharger to your vehicle compounds the problem.  

This brace is CNC-machined from 6061-T6 aluminum and is then finish-anodized in black for long-lasting surface protection.  The brace simply bolts over the factory tensioner using the provided longer bolts, and when installed, prevents the tensioner from bending outward.  A special Delrin insert is installed in the back of the brace to prevent metal-to-metal contact when the tensioner is heavily-loaded.

The kit is a complete bolt-on, and requires no cutting, drilling, or any irreversible changes for installation.  The kit includes the precision-machined billet plate with the Delrin insert, three aluminum spacers, and three Grade 8 cap screws with washers.