Availability
Moroso V-belt crankshaft pulleys are CNC-machined from billet aluminum with a hard-coat anodized finish. They're designed to fit any 1 in. diameter crank-driven mandrel with 1/8 in. x 1/8 in keyway. Moroso V-belt crankshaft pulleys are available in 2.5 in. and 4 in. diameters.
( 5 )
$56.99
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$89.84
Moroso competition-style vacuum pump V-belt pulleys bolt directly onto OEM, Holley, and other smog pumps used as engine vacuum pumps to improve ring seal. Their deep V-groove design ensures belt retention under all racing conditions. They're machined with six holes to reduce weight, and they use the stock mounting pattern.
( 3 )
$91.17
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$102.99
Moroso universal water pump pulley shim kits provide proper drive belt alignment with the water pump. These shims are installed between the water pump pulley and the drive flange. Kit contains two 1/16 in. spacers, and one 1/8 in. spacer.
( 15 )
$14.99
Moroso drive mandrel spacer kits aid you in pulley alignment for your SBC applications. They maintain the register of the mandrel when using a 1/4 in. thick crank trigger. Spacers are constructed of stress-proof steel with a black oxide finish, and come with a 1/4 in. longer crankshaft bolt.
( 1 )
$26.99
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$85.99
Moroso dry sump oil pump pulleys are designed to give you optional ratios for your dry sump system to achieve that desired drive ratio. They are made from billet aluminum and feature a hard coat anodized finish for durability. Pulleys are available with several different tooth counts to achieve the ratio that you need.
( 7 )
$50.99
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$130.99
Moroso crankshaft pulley shims are designed to make your pulleys line up for optimum alignment. They are made of aluminum, and the sets include one 1/16 in. shim, one 1/8 in. shim, and one 3/16 in. shim. The shims fit 3-bolt crankshaft pulleys only.
( 7 )
$41.99
These Moroso gilmer drive belts are designed to keep your accessory drive operating properly. They provide higher power and torque transmission, improved meshing to reduce tooth jump, greater resistance to tooth shear, and reduced friction to extend their life. The belts use a fiberglass cord wound across the entire width of the belts to minimize stretching. Moroso gilmer drive belts are manufactured from a synthetic neoprene compound that resists heat, oils, ozone, and aging. Tough nylon fabric is then bonded to the tooth surface for greater wear resistance.
( 5 )
$39.99
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$45.99
Moroso cast aluminum crankshaft pulleys have a small diameter that slows fan, water pump, and alternator speeds to reduce horsepower-robbing drag. They also have extra-deep grooves to provide added belt retention during rapid changes in engine rpm. They are precision-machined from high-grade, lightweight, aluminum castings.
( 17 )
$53.99
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$93.99
These Moroso alternator pulleys are designed to reduce alternator speeds for high-rpm applications. They're machined from lightweight aluminum to reduce alternator bearing loads and feature a deep groove to help retain V-belts at high rpm.
( 5 )
$52.99
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$97.99
Get more horsepower with Moroso billet aluminum crankshaft pulleys. They are machined from solid billets of the highest-grade aircraft aluminum for maximum durability and feature deep, precision-machined grooves to ensure belt retention, even during extreme changes in engine rpm. When crankshaft and water pump pulleys are used together, water pump speed is reduced by approximately 30 percent. These pulleys have an anodized hard-coat for extended life.
( 1 )
$93.49
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$96.99
These Moroso vacuum pump radius tooth pulleys are designed to work more efficiently and take less power to drive your vacuum pump. They use a .500 in. wide drive belt, and with a wide variety of drive pulley sizes, any drive ratio you may need is achievable. The Moroso vacuum pump radius tooth pulleys fit any 1 in. mandrel with a 1/8 in. keyway slot. They are manufactured from aluminum and then black anodized for protection against corrosion .
( 2 )
$54.99
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$122.99
Moroso electric water pump drive pulleys will allow you to change the speed of the water pump. They come in two different tooth counts to allow the speed change. These pulleys are made from aluminum and feature a hard coat, anodized finish for durability.
( 4 )
$33.99
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$38.99
Moroso competition-style vacuum pump gilmer drive pulleys bolt directly onto OEM, Holley, and other smog pumps used as engine vacuum pumps to improve ring seal. They're machined from aluminum to reduce weight and use the common 3 x 1.313 in. mounting pattern.
Not Yet Reviewed
$128.99
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$163.99
Moroso radius tooth belts fit radius tooth pulleys with 8mm pitch. They provide lower tension with positive engagement and no slippage. They also deliver higher power and torque transmission, improved meshing to reduce tooth jump, greater resistance to tooth shear, and reduced friction to extend belt life. The fiberglass cord is wound across the entire width of the belts to minimize stretching, and the belt body is made from a synthetic neoprene compound that resists heat, oils, ozone, and aging. Tough nylon fabric is bonded to the tooth surface for greater wear resistance.
Not Yet Reviewed
$25.99
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$60.99
Moroso replacement electric drive water pump pulleys are universal fitting, direct replacement pulleys for Moroso electric water pump drive kits. They are made from black plastic and intended for drag race applications only.
( 1 )
$35.99
Moroso alternator round tooth pulleys are designed to work more efficiently and take less power to drive. They use a .500 in. wide drive belt, and with a wide variety of drive pulley sizes, any drive ratio you may need is achievable. These pulleys are made to accept a .590 in. diameter shaft alternator. Moroso radius tooth drive pulleys are designed with the same 8mm tooth technology and will add to the efficiency of the entire round tooth drive combination. They come available in sizes that will not only give you the ratio that you want, but will also adjust the centerline measurement between your alternator and crankshaft center. Moroso drive pulleys fit any 1.00 in. mandrel with a 1/8 in. keyway slot.
( 1 )
$66.99
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$93.99
These Moroso power steering pulleys are designed to slow down your power steering for high rpm applications. They're machined from lightweight and solid billet aluminum to reduce load and are designed with a deep groove to help retain V-belts at high rpm.
( 4 )
$109.99
These Moroso crankshaft pulleys reduce parasitic loss through more efficient power transfer. They feature an improved tooth geometry that also provides positive belt engagement to increase load capacity and reduce wear, noise, and vibration. They're ideal for driving dry sump pumps, vacuum pumps, and other engine accessories. Their billet aluminum construction with a blue hard-coat anodized finish extends service life.
( 3 )
$117.99
—
$123.99
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