Edelbrock part #8025 is an EGR supply tube spacer for Ford Performer RPM II EFI intake manifold #7123. On 1994-1995 Ford Mustangs EGR is fed to the intake by means of a tube running from the rear of the exhaust manifold to the EGR adapter which is mounted to the throttle body flange of the intake manifold. This throttle body flange on the RPM manifold is moved up .30" and forward .50" to centralize the throttle body. The stock tube is not long enough to reach the EGR valve in this new location. The #8025 fitting acts as a 5/8" extension for this EGR supply tube.