GM 9.5 14 Bolt With Clearance For H2, TBSS, SSR Differential Cover

Volume: 0.5 quart over stock

Dimensions: Click here for dimensions. 

Number of Bolts: 14

PML makes three covers for the GM 9.5 inch ring gear, 14 bolt, differential.

PML designed this cover specifically for Hummer H2 and GMC/Chevy trucks and SUVs needing differential cover with a drain hole and plug and extra capacity while clearing pan hard and sway bars.

Benefits:

• 0.5 quart of extra fluid capacity
• Drain hole and magnetic drain plug to simplify maintenance
• 1/4 inch deeper than stock for sway and pan hard bar clearance
• Fins for heat dissipation
• Sand cast aluminum construction for thick walls
• Machined gasket flange for a secure seal
• Includes new hardware, M8&ndash1.25 mounting bolts, fill plug and magnetic drain plug

Bolts: This cover ships with bolts to replace the M8–1.25 x 21mm stock bolts. These are the correct bolts for Hummer H2, Trailblazer SS, SSR 6 speed, and most 2001 and newer vehicles. See Bolt Information in Specifications for more information.

Note: Vehicle configurations vary so always check your configuration and clearance before ordering.

We have some of these on SPECIAL!

Applications:

This PML GM 9.5 cover usually fits behind the sway and pan hard bars on:

• Hummer H2, 2003 to 2009
• Trailblazer SS, 2006 to 2009
• SSR 6 speed, 2005 to 2006
• Some Cadillac SUVs, such as Escalade

To remove the stock cover and install the PML cover, the panhard bar will temporarily need to be dropped.

Many other GMC and Chevrolet trucks, SUVs, and vans have the GM 9.5 differential and may also be able to use this cover (see Bolt Information in Specifications):

• 1/2 Ton Trucks, 1988 to 2013:
  • C10 & K10
  • C1500 & K1500
  • Silverado 1500 & Sierra 1500
  • Silverado 1500 SS
  • Silverado 1500HD & Sierra 1500HD
• 3/4 Ton Trucks, 1979 to 2004:
  • Avalanche 2500
  • C20 & K20
  • C2500 & K2500
  • Silverado 2500 & Sierra 2500 (not HD)
• 3/4 Ton Vans, 1981 to 2013:
  • Vandura
  • Express
  • Savana
  • G2500
• 1 Ton Vans, 1982 to 1995:
  • Vandura
  • Savana
  • G3500
• SUVs such as:
  • Suburban 2500
  • Blazer K5

Vehicle configurations vary so always check your configuration and clearance before ordering. For each model and year there may be more than one rear axle possible. Check your stock cover shape and number of bolts. Check for space to spare tires, pan hard and sway bars, and similar, and see Installations for examples.

2014 and newer Silverado and Sierra 1500: please see PML GM 9.5 12 bolt cover.

Nissan Titan 2016 and newer: These trucks have a similar rear stock cover. See PML Products In Development.

Bolt Information

This PML GM 9.5 differential covers ships with bolts to replace the M8–1.25x21mm stock bolts.

GM has used this differential since the late 1970s and has used four different bolts over the years.

All the Hummer H2, Trailblazer SS, SSR, and Escalade vehicles we have seen use M8–1.25x21mm stock bolts. Most 2001 and newer vehicles also use M8–1.25x21mm stock bolts. Other vehicles can use this cover but may need bolts with different threads.

See Guidelines for Bolt Sizes (click here), opens in new tab or window

Email Product Support if your stock bolts are NOT M8–1.25x21mm stock bolts.

Optional Temperature Sensor Machining

A boss on the side of the cover can be machined for a temperature sending unit. This boss is below the fill hole. Optionally, PML can drill and tap a 1/8 NPT hole. There is a machining charge for this.

Fill and Level Check

The fill hole is on the side of the cover at the same level as the stock cover. The level check hole is on the differential housing. Fill and check the fluid level with this PML cover just like with the stock cover.

Drain, Included With Cover

    
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Drain is on the bottom of the cover.

PML includes a magnetic drain plug, new mounting bolts, and a fill hole plug with each cover.

Inside of Cover

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Inside and out, cover follows the same general profile curve as the stock cover.

PML Differential Cover Compared to Stock

   
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This image compares the depth of all PML GM 9 1/2, 14 bolt differential covers and the stock cover. Click on image to view larger in a new tab or window.