Cometic Extreme Sealing Technology (EST) Motor Only Gasket Set for Models w/3-5/8 in. Big Bore - C9908
EST kits ensure critical seal and superior durability that meets and exceed OE specifications
MLS (multi-layer-steel) head gaskets are ideal for any combination of head and cylinder materials, comprised of two embossed viton coated stainless steel outer layers and variable stainless center layer
The variable center layer allows us to create multiple gasket thickness options, no re-torque is required after initial torque set
Rubber coated single layer steel base gaskets are viton rubber coated with a steel core
AFM material engine cover gaskets are made for a chemically blown compounded nitrile synthetic rubber that is bonded to an aluminum core.
AFM has a temperature resistance of over 250 degrees F and an 85 percent recovery while maintaining a strong torque retention, they also install dry and do not require a re-torque
Viton valve stem seals are made from hi-temperature Flouroviton with Teflon to prolong valve stem life and have a spring on the wiper to maintain a positive seal
Race style exhaust gasket that will not fray into the port
Copper washers and Viton o-rings are used to seal drain plugs and engine covers with stock o-ring seals
Contains all necessary gaskets for application

NOTE: For Big Twin 92-99 with 3-5/8 in. big bore

Included Items:
(2) Base gaskets
(10) Engine case gaskets
(2) Race style exhaust gaskets
(2) Head gaskets
(18) Assorted o-rings
(1) Pump body oil seal
(1) Cam cover oil seal
(1) Sprocket shaft oil seal
(7) Cover/overflow seals
(2) Starter motor shaft oil seals
(1) Inner chain housing seal
(1) Shifter shaft oil seal
(1) Oil line seal
(2) Umbrella valve cover seals
(4) Viton o-rings
(4) Valve stem seals
(8) Vulcanized stud washers
(8) Copper washers
(2) Rocker box gaskets
(2) Engine case washers
(2) Oil pan/pump gaskets
(2) Inner rocker gaskets
(2) Upper rocker box gaskets
(2) Rocker box gaskets
(2) Intake manifold gasket seals
(1) Carb seal o-ring
(1) Intake reed gasket