Engine Parts - Pulleys

6-Rib Serpentine Crankshaft Pulley for Big Block Chevy (Mercury HP500 Engine Spacing), Polished

These are billet crankshaft pulleys that are CNC precision machined from 6061 T-6 billet aluminum. 5-1/2" Diameter, 1-3/4" thick

2-Groove Billet Crankshaft Pulley For Big Block Chevy

• Machined from 6061-T6 billet aluminum. 
• Set up for a Mercury replacement with deeper v-groove. 
• Comes highly polished.
• Diameter of 6.5"
• Pilot Hole is 1-1/8"

• 2.25" thick from damper face to front of pulley
• 1st groove (alternator) 6.60" diameter
• 2nd groove (sea pump) 5.05" diameter
• 3rd groove (power steering) 6.60" diameter

Big Block Chevy Billet Small Diameter Crank Pulley - Machined from solid billets of the highest-grade aircraft aluminum for maximum durability and feature deep, precision-machined groove to ensure belt retention, even during extreme changes in engine rpm. These pulleys have a black anodized hard-coat for extended life and corrosion resistance . Diameter 5.250".

Single Groove Billet Crankshaft Pulley For Ford 460

• Machined from 6061-T6 billet aluminum. 
• Comes highly polished.
• 5-5/8" Diameter
• 1-3/4" Height

2-Groove Billet Crankshaft Pulley For Oldsmobile

• Machined from 6061-T6 billet aluminum. 
• Comes highly polished.
• 4-3/4" Diameter
• 2-1/4" Height

Single Groove Billet Crankshaft Pulley For Big Block Chevy

• Machined from 6061-T6 billet aluminum. 
• Set up for a Mercury replacement with deeper v-groove. 
• Comes highly polished.
• 6-7/16" Diameter
• 7/8" Height
• Available in Satin, Polished and Black

• 2.25" thick from damper face to front of pulley
• 1st groove (alternator) 6.60" diameter
• 2nd groove (sea pump) 5.05" diameter
• 3rd groove (power steering) 6.60" diameter

Big Block Chevy / Small Block Chevy Generation 4 Sea Pump Pulley

All Hardin Marine sea pump pulleys for Gen 4 V-groove belts use a mandrel on the pump, then the pulley bolts to the mandrel. Some manufacturers sell you a press-on pulley, these usually work themselves off.  This needs a mandrel to mount.

Pulley diameter of 6.5".

Big Block Chevy Generation 5 Sea Pump Pulley (Needs Mandrel To Mount)

All Hardin Marine sea pump pulleys for Gen 4 & 5 V-groove belts use a mandrel on the pump, then the pulley bolts to the mandrel. Some manufacturers sell you a press-on pulley, these usually work themselves off.

Pulley has the diameter of 5.5".

HP500 / Hardin Drive Kit Serpentine Pulley 6-Rib (Needs Mandrel to Mount)

All Hardin Marine Sea pump pulleys for Gen 4 & 5 v-groove bolt use a mandrel on the pump, then the pulley bolts to the mandrel. Some manufacturers sell you a press-on pulley, these usually work themselves off. This pulley is for HP500 engines, and Hardin Marine Drive Kits only.

Note:  Mandrel Sold Separately.

Serpentine 6-Rib Alternator Pulley (Fits a .670" Round Shaft) Fan sold separately

Hardin Marine makes the correct billet alternator pulley for your Mando alternator. Just slide yours off and replace it with the Hardin billet polished pulley.

Dowel Keyway For Multi-Stage Sea Pump Mandrel.

Mandrel For Sea Pump Pulley

Pulley Mandrel with Keyway For Multi-Stage Sea Pumps.

Mando Alternator Pulley

Hardin Marine has the correct billet alternator pulley for your Mando alternator. Just slide yours off and replace it with Hardin polished billet pulley.

Billet Power Steering V-Groove Pulley

These power steering pulleys mount with a mandrel so you can bolt the pulleyto the mandrel. Some manufacturers have you press their pulleys on, theseusually work themselves off due to belt heat and pump heat. Always use amandrel for mounting.

Pulley has the diameter of 6.0".

Billet Serpentine Idler Pulleys - 3-3/16" Smooth Idler Pulley

Each precision machined billet pulley is 3-3/16" in diameter and features oversized high RPM bearings.  Used with 17mm idler spacer or boss.