PML Differential Covers for the GM 9½" Ring Gear, 14 Bolt

PML makes three different covers for this rear GM differential because of the many applications. All these covers will fit the differential. Choose based on the space available and fin pattern preference.

This table summarizes the differences between the PML covers:

Applications

The GM 9.5 ring gear rear differential is found on trucks, SUVs and vans from 1988 to the present.

Always check your vehicle to verify configuration and clearance since configurations vary.

Fill and Drain Holes and Temperature Sensor Boss

These covers include drain holes and a fill/level check hole.

A magnetic drain plug is included for use in the drain hole.

Below the fill/level check hole is a boss that can be machined for a temperature sensor.

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PML Differential Cover Features:

• Increased oil capacity for cooler temperatures
• Sand-cast aluminum with raised fins
• 3/16-inch thick wall construction to add strength to differential housing
• 3/8-inch thick gasket flange will not bend when bolts are tightened
• Machined gasket surface for a secure seal using RTV or factory reusable gasket
• Oil changes without removing the cover
• All hardware provided, including magnetic drain plug

Learn more about finishes and construction of PML parts.