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Moroso Fabricated Aluminum Valve Covers
Racers who use the latest cylinder heads or want a unique look for their engines—or both—can now find quality, lightweight aluminum valve covers at an affordable price. These Moroso fabricated aluminum valve covers have thick billet rails for superior gasket sealing and resistance to warping. They mount through tubes welded directly to the valve covers—to help maintain gasket-rail flatness and prevent leaks. The covers feature a tall design that will clear all rocker combinations, as well as stud girdles. Some models have built-in oilers to keep valve springs cooler in oval track racing. Order the model designed for your vehicle and engine application.
( 27 )
$377.99
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$1,615.99
Moroso Diecast Aluminum Valve Covers
Moroso diecast aluminum valve covers are made with the finest materials available. Their diecasting process is extremely precise and results in a blemish-free surface. The gasket rails are thick for superior gasket sealing, and the covers' thin-wall design makes them about half the weight of other cast versions. They're available with or without filtered breathers in black epoxy, polished, or natural finishes. They feature a variety of breather locations, from stock to Circle Track-oriented configurations. Most applications include two breather/filler cap grommets and one PCV grommet. Circle Track and other racing versions feature welded-on breather tubes in a variety of locations; most include breathers.
( 24 )
$207.99
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$396.99
Moroso Stamped Steel Valve Covers
These stamped steel valve covers from Moroso are available in your choice of short or tall designs with a variety of breather locations. They are designed to fit everything from stock to Circle Track-oriented configurations. They're manufactured from high-quality steel with either a durable zinc plated finish or a 3-step chroming process, which guarantees the highest and longest-lasting shine possible. Most applications include two breather/filler cap grommets and one PCV grommet. Circle Track and other racing versions feature welded-on breather tubes in a variety of locations, with most including breathers.
( 40 )
$87.99
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$211.99
Moroso Billet Aluminum Valve Covers
Moroso billet aluminum valve covers are CNC-machined from a billet aluminum bar to make them lightweight without sacrificing strength. Their airtight sealing allows the engine to pull greater vacuum for improved ring seal and power. The covers are available plain or with the Moroso logo, natural or black anodized—and mount with either a centerbolt or perimeter bolts. Order the pair designed for fitment with your vehicle and engine application.
( 2 )
$564.99
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$1,542.99
Moroso Cast Aluminum Valve Covers
Moroso cast aluminum valve covers are performance engine parts designed to replace stock valve covers. They offer improved durability, cooling, and engine aesthetics compared to plastic factory parts at a more affordable price than billet aluminum options. These covers are made for various popular engine applications, such as Chevy small blocks from 1997 and up. * Increased durability: Designed to withstand the demands of performance engines * Improved engine cooling: Aluminum is a better conductor of heat than plastic, helping to dissipate heat away from the valve train * Aesthetic appeal: They provide a more rugged, performance-oriented look for the engine bay
Not Yet Reviewed
$172.99
Moroso One-Piece Push-In Valve Cover Breathers
Moroso one-piece push-in valve cover breathers are designed to drain oil trapped in their foam filter elements back into the valve covers, rather than allow it to drain out of the air vents or get into the air cleaner. These breathers are available in several colors and finishes. They'll fit all Moroso valve covers, as well as any other covers with a 1.22 in. hole. Some have 90 degree nipples to feed vapor into the air cleaner, and an installation grommet is included.
( 37 )
$18.99
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$57.99
Moroso Valve Cover Filtered Breathers
Help your engine breathe better with Moroso valve cover filtered breathers. They are available in half-hooded styles for extra protection from dirt and debris, and non-hooded designs for when that added shielding isn't necessary. Both styles provide serious protection against dirt and airborne debris without restricting airflow. These breathers also come in either a push-in or clamp-on style; both are cleanable and reusable.
( 22 )
$24.99
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$110.99
Moroso Oval Track Valve Cover Stud Kits
In racing, a leaking valve cover caused by a fastener shaking loose from vibration could result in a disaster. Moroso Oval Track valve cover stud kits are designed primarily for Oval Track racers using Moroso cast aluminum valve covers. The kits have nylon insert locknuts to make sure those fasteners won't come loose.
( 21 )
$16.99
Moroso Valve Cover Stud Kits
These valve cover stud kits from Moroso are designed to prevent valve covers from vibrating loose in competition. They're available in several styles to cover various applications.
( 15 )
$17.99
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$90.99
Moroso Valve Cover Breather Baffles
Moroso 14 gauge aluminum valve cover breather baffles are designed to mount inside your Moroso valve covers under the breather hole. They'll keep oil from getting into the breather, which will increase the breather's life. They include all necessary mounting hardware.
( 10 )
$16.99
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$55.99
Moroso Extra Long Valve Cover Wing Nuts
These Moroso extra long valve cover wing nuts are available in chrome plated steel or your choice of powdercoated or anodized aluminum colors. They include matching studs to eliminate gaskets alignment problems and to speed installation.
( 19 )
$24.80
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$56.99
Moroso Valve Cover Baffle Kits
Control the oil with Moroso valve cover baffle kits. These no-weld kits provide an easy way of adding a female AN fitting to steel or aluminum valve cover. And since there isn't any welding required, there is not the possibility of heat damage to the chrome or powdercoat finishes of your valve covers. Moroso valve cover baffle kits include hardware and O-ring, and are available in -8AN, -10AN, and -12AN female fittings.
Not Yet Reviewed
$48.99
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$55.99
Moroso Valve Cover Hold-Down Tabs
Moroso hold-down tabs spread the fastener load over a larger area of the valve cover flange to eliminate flange distortion and subsequent oil leakage. These tabs are available in several different finishes for a variety of applications.
( 24 )
$22.99
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$48.99
Moroso Chrome Valve Cover Acorn Nuts
Moroso chrome valve cover acorn nuts add a decorative touch to engines in cases where long valve cover wing nuts are impractical. They fit a variety of valve covers, and have a flashy chrome finish.
( 2 )
$43.99
Moroso Positive Locking Breathers
Designed just for racecars, Moroso's positive-locking valve cover breathers meet the rules for cars running 7.99 seconds and faster. They rely on threaded collars that mount on the inside of the valve covers, through the standard 1.22 in. opening, to provide secure attachment. They also have internal stainless steel baffling to keep oil and air separated. Jam nuts allow the breathers to be positioned in any way necessary to suit plumbing requirements, and Buna-N gaskets that are resistant to oil, alcohol, and race fuel are used to form an airtight seal. Mounting hardware is included.
( 17 )
$94.99
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$144.99
Moroso Copo Valve Cover Breathers
Moroso Copo valve cover breather kits allow push-in installation of billet breather adapter assembly into valve covers with 1.22 in. through holes. This permits crankcase ventilation from valve covers to externally mounted breather tank. Moroso breathers and adapters are machined from billet aluminum, and each kit includes grommets and O-rings. Copo valve cover breather kits are for use with 3/4 in. I.D. hose (not included).
( 1 )
$203.99
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$252.99
Moroso Timing Cover Bolts
Manufactured from cadmium plated Grade 8 steel, Moroso timing cover bolts live up to their reputation for durability. They have an integral serrated washer face to ensure positive locking against the timing cover.
Not Yet Reviewed
$13.99
Moroso Valve Cover Nuts
Moroso offers valve cover fasteners in a variety of styles and sizes. They seal the top of your cylinder head to keep debris out of the oil and prevent damage to the valves. Order the set preferred for your application.
( 3 )
$35.99
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$49.99
Moroso Valve Cover Breathers with Media
Moroso valve cover breathers with media feature 2-piece billet aluminum construction with O-ring seal for easy cleaning and the Moroso logo. These push-in style breathers have a 1.22 in. I.D. hole, a 5/8 in. hose barb outlet with internal mesh media for oil separation, and include push-in grommets for sheet metal valve covers and grommets for cast/stamped valve covers. Moroso's valve cover breathers with media can be used as replacements for or as an upgrade to their crankcase evac system kits.
Not Yet Reviewed
$197.99
Moroso PCV Grommets with Integral Baffles
Moroso PCV grommets with integral baffles are designed for those using extra-tall valve covers without the integral oil control baffles. The special oil-resistant design keeps oil out of the PCV valve. They'll work with all GM PCV valves and will fit any valve cover with a 1.22 in. diameter hole.
( 20 )
$9.99
Moroso Breather Grommets with Integral Baffles
Moroso breather grommets with integral baffles are designed for use with valve covers that do not have an oil control baffle system. They are made from oil-resistant rubber and will fit into any valve cover with a 1.22 in. diameter hole, replacing the OEM-style grommets. The built-in baffles provide oil control. Note: These breather grommets will not clear stud girdles.
( 28 )
$10.99
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$11.39
Moroso PCV Grommets
Moroso PCV grommets are for the street enthusiast using Moroso valve covers and wishing to install a positive crankcase ventilation system. The grommets work with all GM PCV valves and will fit all valve covers with a 1.22 in. hole.
( 16 )
$11.99
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$12.99
Moroso Breather/Filler Cap Grommets
Moroso breather/filler cap grommets are great for replacing your worn and dirty grommets. These oil-resistant rubber components are sold two per package and will fit all valve covers with a 1.22 in. diameter hole.
( 10 )
$12.99
Moroso Weld-In Filtered Breather Kits
Moroso weld-in filtered breather kits contain two 1 3/8 in. O.D. aluminum breather tubes with internal baffling, two half-hooded filtered breathers, and two stainless steel hose clamps. Although they're specifically designed to weld onto Moroso aluminum valve covers, they can be adapted to fit other brands of aluminum covers as well.
( 2 )
$80.99
