Standard Ignition VG78 EGR Valve Gasket
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Standard Ignition

Standard Ignition VG78 EGR Valve Gasket

Brand Standard Ignition VG78
Contents 1 Gasket
Fits Mazda · 4 vehicles

Metal construction. Provides a durable sealing surface for the gasket.

Two-bolt design. Matches the mounting pattern for a secure fit.

Single-port gasket. Seals one opening in the emission control system.

Cross-references Standard Ignition VG78, 2-25226 and EVG78 for the same application. See all 4.

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Standard Ignition VG78 EGR Valve Gasket

Standard Ignition VG78 is a metal exhaust gas recirculation (EGR) valve gasket built for a precise seal at the EGR mounting surface. It is a direct-fit service part for 1988-1991 Mazda 929 applications and is shaped for the specified port and bolt-hole layout.

Key Features

  • Metal gasket construction for EGR valve sealing
  • Single-port design with 2 bolt holes
  • Inner diameter: 0.63 in. (16.08 mm)
  • Overall length: 2.64 in. (67.056 mm)
  • Width: 1.1 in. (27.94 mm)
  • Thickness: 1/64 in. (0.51 mm)
  • Fits 1988-1991 Mazda 929, N/A

Detailed Description

The Standard Ignition VG78 EGR valve gasket is intended for emission control service where a tight seal between the EGR valve and mating surface is required. Its metal construction and measured dimensions support accurate alignment on the 1988-1991 Mazda 929, helping maintain a secure seal at the EGR connection. If you are replacing a leaking or damaged EGR valve gasket on a Mazda 929, VG78 provides the correct fitment profile for this application.

This part cross-references 2-25226 and EVG78 for the same application. The VG78 part number is also useful when searching for a Standard Ignition EGR valve gasket for Mazda 929 model years 1988 through 1991.

What It Helps Fix

  • Exhaust leaks at the EGR valve mounting point
  • Damaged or flattened gasket sealing surfaces
  • Rough idle caused by an EGR sealing issue
  • Check engine light concerns related to EGR leakage
  • Loss of proper exhaust gas recirculation flow at the valve interface

Installation Notes and Tips

Clean both mating surfaces before installation and remove any old gasket material, carbon buildup, or corrosion. Verify the EGR valve and flange are aligned correctly before tightening fasteners to the specified torque for the vehicle service procedure. For search purposes, this is the correct EGR valve gasket for 1988-1991 Mazda 929, and the VG78 part number should be matched to the vehicle application before installation.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for emission control service parts, and VG78 is built to the listed dimensions and material specification for this application.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1991Mazda9293.0LV6N/A—
1990Mazda9293.0LV6N/A—
1989Mazda929——N/A—
1988Mazda929——N/A—
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — VG782-25226EVG78JF0120305