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Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953

  • Part #:
    263399
  • Manufacturer Part #:
    C9953

MSRP Price: $150.95

Our Price: $134.88

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Overview of Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953
  • 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


  • Included Items:
    (2) Base gaskets
    (1) Carb gaskets
    (9) Engine case gaskets
    (2) Race style exhaust gaskets
    (2) Head gaskets(.030")
    (1) Oil pan/pump gasket
    (2) Inner rocker gaskets
    (2) Lower rocker box gaskets
    (1) Shifter shaft oil seal
    (2) Trans. main drive oil seals
    (1) Crankcase oil seal
    (2) Intake manifold gasket seals
    (1) Carb seal o-ring
    (1) Clutch cover o-ring
    (5) Assorted o-rings
    (5) Viton o-rings
    (1) Quad ring
    (4) Hat seals
    (8) Vulcanized stud washers
    (2) Rocker box gaskets

Specs for Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953

Type Complete Gasket
Type Full Engine Gasket Kit
Units Set
Weight 1.68 lbs

Alternate/OEM Part Number(s):

09340735
Specs for Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953
Type Complete Gasket
Type Full Engine Gasket Kit
Units Set
Weight 1.68 lbs
Fitment for Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953

Part 263399 fits the following machines

Make Sure This Fits Your Ride
Harley-Davidson
  • 2006 Harley-Davidson Sportster Custom - XL 1200C
  • 2005 Harley-Davidson Sportster Custom - XL 1200C
  • 2004 Harley-Davidson Sportster Custom - XL 1200C
  • 2006 Harley-Davidson Sportster Roadster - XL 1200R
  • 2005 Harley-Davidson Sportster Roadster - XL 1200R
  • 2004 Harley-Davidson Sportster Roadster - XL 1200R
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Instructions and Manuals for Cometic Extreme Sealing Technology (EST) Complete Gasket Set w/.030 Head Gasket - C9953

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