Proform Chrome 10 and 12 hole differential covers. The pictures on this page were scanned from an older catalog that had only B&W photos. These parts have the same high quality chrome as all Proform GM licensed parts do. Someday these low quality pictures will be replaced when time can be set aside to take pictures of these.
Note: More parts will be added as time permits. If you don’t see the Proform part you are looking for, give us a call and if we don’t have it in stock, we will try to get it for you. We have much more Proform parts in stock then we have time to put on our web site.
Updated 04-11-2006.
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Proform Index Page
Air Cleaners
Air Cleaner Parts
Alternators
Alternator Brackets
Breather Caps, Oil Filler Tube
Carburetors
Carburetor Metering Blocks
Carburetor Main Bodies
Carb Throttle Base Plate
Dampers / Balancers
Damper / Balancer Covers
Differential Covers
Distributors
Distributor Parts
Dress-Up Kits
Engine & Trans Dipsticks
Fuel Pump Block Off Plates
Master Cylinder Covers
Oil Filler Caps
Rocker Arms
Starters
Tachometers
Timing Tabs
Timing Covers
Transmission Oil Pans
Valve Covers
Valve Cover Parts
Water Necks
Water Pumps (Electric)
Wire Looms & Dividers
Chevy Performance Proform Price Sheet (Excel File) Order Free Proform Catalog

Part Number Description Picture
141-240
GM 12342013
GM 10 Hole Chrome Differential Cover
GM 10 Hole 1971 - 1981. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Discontinued) (5 Left) (Replacement - Use Proform 66126)
GM Chrome 10 Hole Differential Cover P/N 141-240

141-241
GM 12342018
GM 10 Hole Differential Cover
GM 10 Hole, intermediate 1965 - 1972. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Discontinued) (Sold Out) (Replacement - Use Proform 66165)
GM Chrome 10 Hole Differential Cover P/N 141-241

141-242
GM 12342019
GM 12 Hole Differential Cover
GM 12 Hole, intermediate 1965 - 1972; Camaro and Chevelle 1971 - 1972. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Discontinued) (Sold Out) (Replacement - Use Proform 66168)
GM Chrome 12 Hole Differential Cover P/N 141-242

66126
GM 10 Hole Chrome Differential Cover
GM 10 Hole 1971 - 1981. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Replaces Proform 141-240)
GM Chrome 10 Hole Differential Cover P/N 141-240

66165
GM 10 Hole Differential Cover
GM 10 Hole, intermediate 1965 - 1972. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Replaces Proform 141-241)
GM Chrome 10 Hole Differential Cover P/N 141-241

66168
GM 12 Hole Differential Cover
GM 12 Hole, intermediate 1965 - 1972; Camaro and Chevelle 1971 - 1972. These differential covers are made of heavy steel and plated to GM’s 25 micron thickness specifications for long-lasting appearance. Verify photo for correct application.
(Replaces Proform 141-242)
GM Chrome 12 Hole Differential Cover P/N 141-242