$20 Off $250 / $40 Off $500 / $80 Off $1,000 - FINAL DAY! Use Promo Code: DEALS

$20 Off $250 /$40 Off $500 / $80 Off $1,000
FINAL DAY! Use Promo Code: DEALS

It's the Season for Savings - Shop Holiday Deals Now!

14 Results Found For "additives"

Part Groups

Results 1 - 14 of 14

Fel-Pro PermaDry Valve Cover Gaskets

Fel-Pro PermaDry valve cover gaskets are recommended for stock replacement use. Their shape, thickness, and construction varies with each engine application. In addition to tried-and-true materials such as cork and rubber, advances in gasket technology have also been incorporated into molded silicone seals for leak-free performance. Simply match up your vehicle's make and model year with the Fel-Pro PermaDry valve cover gaskets designed for precise fitment. Note that these gaskets are not intended for race applications.

4.6 out of 5 stars ( 384 )

$5.50

$14.99

Howards Cams Ultimate Duty Valve Seals

Howards Cams Ultimate Duty premium PC-type seals are made of a space-age material that is tolerant to pump gas, alcohol, and nitromethane. Temperature-tolerant to 350 degrees, they are self-lubricating and offer controlled radial tension during changes in operating temperatures. Howards Cams Ultimate Duty valve seals are color-coded and control oil while lubricating the valve guide. Additional features include: * Space-age DuPont fluoro-polymer material * Design allows for very small amount of oil for guide/stem lubrication * Install with fingers

4.75 out of 5 stars ( 24 )

$1.99

$8.99

Cometic AFM Intake Gaskets

Cometic AFM intake gaskets are constructed from a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core. The gasket material has a temperature resistance of over 250 degrees and an 85 percent recovery, while maintaining strong torque retention. Cometic AFM intake gaskets are ideal for machined surfaces, especially uneven stamped surfaces that have been plated. AFM intake gaskets retain torque and require no additional sealers.

4.46 out of 5 stars ( 26 )

$2.30

$10.31

On Sale

Professional Products Power Plus Intake Manifold Gasket Sets

These Professional Products Power Plus intake manifold gasket sets feature silicone beading around the intake ports and water ports for additional sealing. These sets do not include end rail gaskets. They are designed for use with an RTV-type gasket sealer.

Not Yet Reviewed

$6.99

$7.99


$6.29

$7.19

S&S Cycle Manifold O-Rings

S&S Cycle offers several options of manifold O-rings for your motorcycle. They are made of special materials that resist destruction from the additives in today's fuel. Select the ones needed for your bike.

Not Yet Reviewed

$8.96

$9.86

SCE AccuSeal E Exhaust Gaskets

Your budget doesn't need to take a hit every time you buy gaskets; and you never need to sacrifice quality. SCE AccuSeal E Series is the common sense gasket line for engine builders, racers, or weekend warriors who want a better gasket at a reasonable price. AccuSeal E exhaust gaskets hold up under high temperatures and pressures; they're available for nearly 20 port styles in a variety of sizes and quantities. Order the seals recommended for your application. Additional product details: * Designed for exhaust header/manifold high-temperature and pressure usage * Kevlar® and graphite material combination provides extreme heat resistance, strength, and durability * Composite or paper gasket material also available (select models) * Resists blowout and burnout from exhaust high-temperature and pressure * Good adaptability to seal header/manifold flange irregularities * Can be trimmed easily for modified port applications. * Permits easy removal of gasket for engine service * Available for a variety of year/make and engine applications, from the early 1950s and up

4.6 out of 5 stars ( 5 )

$4.90

$9.82

SCE AccuSeal Pro Exhaust Gaskets

SCE offers AccuSeal Pro exhaust gaskets for countless year/make and engine applications, from the 1950s and up. These premium seals are available in steel/graphite and composite materials—for nearly 20 port styles, in different heights, widths, and quantities. Order the gaskets recommended for your vehicle. Additional product details: * Designed for extreme exhaust header/manifold high-temperature and pressure usage * Perforated steel core provides superior strength, durability, and fastener torque retention to eliminate gasket failure * Graphite facing applied to both sides of core provides extreme heat resistance to prevent blowout and burnout * Good adaptability to seal header/manifold flange irregularities * Will not impede exhaust flow * Permits easy removal of gasket for engine service * Available for most OE and aftermarket cylinder heads

4.55 out of 5 stars ( 22 )

$2.93

$2.99

Cometic Valve Stem Seals

Valve stem seals from Cometic provide superior sealing to keep oil out of combustion chambers for improved engine efficiency and performance. Cometic valve stem seals are comprised of a high-quality materials that's extremely resistant to heat, oil additives, and abrasion. These seals are manufactured to precise specifications ensuring they remain in place and deliver excellent long-term durability.

5.0 out of 5 stars ( 11 )

$2.02

$8.41

Cometic Gasket Center Case Gaskets

Cometic Gasket has developed some of the highest performing gaskets available on the market that are proven under the most demanding track conditions. Their center case gaskets are constructed from a high-temperature, creep-resistant Aramid fiber that is fuel-resistant and asbestos-free. Plus, they are available in different thicknesses and are designed to seal without using additional sealants. Seal your center case tight with the proven components and design of Cometic Gasket center case gaskets.

Not Yet Reviewed

$3.65

$11.67

Cometic Turbocharger Flange Gaskets

Manufactured from a high-grade stainless steel, Cometic turbocharger flange gaskets get the job done the first time! The embossed spring steel maintains a torque set and won't burn through or push out. They do not require additional sealer. Choose the gaskets designed to meet your application's need.

Not Yet Reviewed

$8.56

$9.33

Doug Thorley Exhaust Header Gaskets

Doug Thorley header gaskets are custom-made from a high-temperature material that withstands heat up to 1,200 degrees F. It is imperative that you use a gasket for a guaranteed seal every time, and these are some of the toughest out there. In addition to flat gaskets, they also offer a line of conical (donut-style) gaskets made from a graphite composite. Conical gaskets are specifically designed for movement and flexibility. Simply put, Doug Thorley gaskets do not leak.

4.0 out of 5 stars ( 4 )

$4.76

Sierra Marine Carburetor Cover Gaskets

Sierra Marine carburetor cover gaskets are made with performance-grade materials and precision die-cut for a great fit. These carburetor components works well with a variety of fuels and additives and defies swelling caused by various fuels to provide a good seal with little clamp force, torque retention, crush resistance, shear strength, and ease of release. For over 50 years, Sierra has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Start upgrading your watercraft now, with high-quality parts and accessories from Sierra Marine.

Not Yet Reviewed

$2.99

Summit Bucks

ACDelco GM Genuine Parts Automatic Transmission Oil Pump Gaskets and Seals

ACDelco GM Genuine Parts automatic transmission oil pump gaskets and seals are manufactured to be an exact replacement for your vehicle. Genuine OE parts are recommended in order to deliver peace of mind that the fit, form, and function are of the highest standards. Get the factory-style components you need from ACDelco GM Genuine Parts. Order the gaskets and seals designed for your application.

5.0 out of 5 stars ( 2 )

$2.99

Summit Bucks

ACDelco GM Genuine Parts Intake Manifold Gaskets

ACDelco GM Genuine Parts intake manifold gaskets include the necessary parts to seal your intake manifold to the cylinder head's intake ports. They help prevent the loss of fuel/air mixture from the intake manifold and help prevent dirt/debris from entering the engine and intake ports. These intake manifold gaskets are manufactured from a high grade rubber and are GM recommended replacements for your vehicle's original component. GM Genuine Parts intake manifold gaskets have been made to provide you with the performance, durability, and service life you have come to expect from General Motors.

4.84 out of 5 stars ( 31 )

$7.99

  • 1
  • Page 1 of 1

Modal Header