9504-2-B | PML Cover GM 9.5 14 Bolt, Patterned Fins For Chevrolet Silverado 1500 & 1500HD / GMC Sierra 1500 & 1500HD | Black Powder Coat Finish, Stock Bolt Size 8mm-1.25x16 (-2)

Cover includes magnetic drain plug and mounting hardware. This PML cover bolts on using 13 of the 14 bolt holes. The cover is heavy-duty, so 14 bolt holes are not needed for a secure seal.

Volume: 

1.0 quart over stock

Number of Bolts: 

14 bolts

PML makes two covers for the GM 9.5 inch ring gear differential. Both fit the differential. This cover was designed to provide maximum capacity without interfering with the spare tire. The other cover is PML part number 10303-2.

Benefits:

• 1 quart of extra fluid capacity
• Drain at the bottom (one bolt hole is removed to put the drain at the exact bottom), with magnetic drain plug, to simplify maintenance
• Custom fin design for great looks and heat dissipation
• 1/2" deeper than OEM cover and should clear most spare tires
• Sand cast aluminum construction for thick walls
• Machined gasket flange for a secure seal
• Includes new hardware: mounting bolts, fill plug and magnetic drain plug

These PML rear end differential covers fit the 14 bolt GM 9.5 inch rear differential. Some possible applications are:

• 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
• These vehicles usually need PML GM 9.5 H2 cover because of the sway bar:
  • Hummer H2
  • Trailblazer SS
  • SSR
  • Escalade

Configurations vary. Always check your vehicle to verify differential and clearance. 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.

Bolt Information

This cover bolts on using 13 of the 14 bolt holes. The bolt hole at the bottom of the cover was removed so that the drain could be centered on the part. This allows for complete draining of fluid. The is no problem with sealing or leaks since the PML cover is heavy duty and does not flex.

PML provides new mounting bolts with each cover. Since GM has used four different bolts for this differential, please specify when ordering which bolts are needed for your vehicle.

Optional Temperature Sensor Port

The boss on the side can optionally be machined for temperature sending unit. There is a machining charge and a plug is included.

Fill and Level Check

The fill hole is on the side of the cover at the 3 o'clock position. There is level check hole is on the differential housing. Fill and check the fluid level with this PML cover just like with the stock cover.

Matching Front Cover for 4WD

For some vehicles with this rear differential, PML makes a matching differential cover for the front. See PML GM Front 8.5, 10 Bolt.

Gasket Information

PML recommends RTV or paper/fiber gaskets or cork composite gaskets.

PML machines the gasket surface of our differential covers flat. The flange surface of the differential housing is also machined flat. A thin bead of RTV silicon sealant makes an excellent seal between two machined surfaces.