Federal-Mogul's Sealed Power® brand offers premium molybdenum-faced and chrome-plated compression rings that are lapped to a light-tight finish for fast break-in and positive blow-by control. These materials are the ideal choices for top rings, which get the most heat, the most pressure and the least lubrication.

Rings made with molybdenum (moly), a hard, low-friction metal, have outstanding oil-carrying capacity to provide excellent

top-ring lubrication. Federal-Mogul's Sealed Power® brand moly rings resist scuffing, reduce drag and seat fast.

Federal-Mogul's Sealed Power® brand cast-ring assemblies are made from a premium-grade iron and provide reliable sealing for virtually all engines. The rings maintain uniform contact with the cylinder wall, containing combustion pressures and delivering excellent oil control.

Sealed Power cast-ring assemblies also provide efficient piston-to-cylinder heat transfer.

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Sealed Power Rings

Speed Pro E232K Federal-Mogul GMC Ring Sets

Part #: E232K

4.0938" bore ring set Moly coated* GM with the top two ring 5/64" Thick and the bottom ring 3/16" thick

Speed Pro E233K Federal-Mogul Chrysler, Dodge, Plymouth Ring Sets

Part #: E233K

4.25" bore ring set Moly coated* GM and Chrysler with the top two ring 5/64" Thick and the bottom ring 3/16" thick

Speed Pro E233X Federal-Mogul Chrysler, Dodge, Plymouth Ring Sets

Part #: E233X

4.25" bore ring set, Cast, GM and Chrysler with the top two rings 5/64" Thick and the bottom ring 3/16" thick

Speed Pro E251K Federal-Mogul GMC, Ford, Chrysler, AMC Ring Sets

Part #: E251K

4.00" bore ring set moly coated,GM, Ford,Chrysler,AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Sealed Power E251K2 Piston Ring Set 4" Bore Moly Coated +.020 Over

Part #: E251K20

4.00" +.020 OVER SIZE bore ring set Moly Coated Top Ring, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Sealed Power E251K3 Piston Ring Set 4" Bore Moly Coated +.030 Over

Part #: E251K30

4.00" +.030 OVER SIZE bore ring set Moly Coated Top Ring, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251K40 Federal-Mogul Rings Sets +.040 Oversize

Part #: E251K40

4.00" +.040 OVER SIZE bore ring set Moly Coated Top Ring, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251K60 Federal-Mogul Rings Sets +.060 Oversize

Part #: E251K60

4.00" +.060 OVER SIZE bore ring set Moly Coated Top Ring, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251X Federal-Mogul GMC, Ford, Chrysler, AMC Rings Sets

Part #: E251X

4.00" bore ring set cast GM, Ford, Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251X20 Federal-Mogul Rings Sets +.020 Oversize

Part #: E251X20

4.00" +.020 OVER SIZE bore ring set cast, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251X30 Federal-Mogul Rings Sets +.030 Oversize

Part #: E251X30

4.00" +.030 OVER SIZE bore ring set cast, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Sealed Power E251X40 Piston Ring Set 4" Bore Cast +.040 Oversize

Part #: E251X40

4.00" +.040 OVER SIZE bore ring set cast, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E251X60 Federal-Mogul Rings Sets +.060 Oversize

Part #: E251X60

4.00" +.060 OVER SIZE bore ring set cast, GM,Ford,Chrysler, AMC with the top two ring 5/64" Thick and the bottom ring 3/16" thick and .200" Deep groove

Speed Pro E921K Federal-Mogul GMC Rings Sets

Part #: E921K

4.00" .STD SIZE bore ring set Moly Coated Top Ring, GM with the top two ring 1.5mm Thick and the bottom ring 3mm thick and .200" Deep groove

Speed Pro E921K20 Federal-Mogul Rings Sets +.020 Oversize

Part #: E921K20

4.00" +.020 OVER SIZE bore ring set Moly Coated Top Ring, GM with the top two ring 1.5mm Thick and the bottom ring 3mm thick and .200" Deep groove

Speed Pro E921K30 Federal-Mogul Rings Sets +.030 Oversize

Part #: E921K30

4.00" +.030 OVER SIZE bore ring set Moly Coated Top Ring, GM with the top two ring 1.5mm Thick and the bottom ring 3mm thick and .200" Deep groove

Speed Pro E921K40 Federal-Mogul Rings Sets +.040 Oversize

Part #: E921K40

4.00" +.040 OVER SIZE bore ring set Moly Coated Top Ring, GM with the top two ring 1.5mm Thick and the bottom ring 3mm thick and .200" Deep groove

Speed Pro E921K60 Federal-Mogul Rings Sets +.040 Oversize

Part #: E921K60

4.00" +.040 OVER SIZE bore ring set Moly Coated Top Ring, GM with the top two ring 1.5mm Thick and the bottom ring 3mm thick and .200" Deep groove