Engine Parts - Pulleys

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6-Rib Serpentine Crankshaft Pulley for Big Block Chevy
Your Price:
$194.99

6-Rib Serpentine Crankshaft Pulley for Big Block Chevy

625-8176

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
Your Price:
$78.99

Big Block Chevy 2-Groove Billet Crankshaft Pulley

421-843

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"

Small Block Chevy 3 V-Groove Crank Pulley
Your Price:
$109.99

Big Block Chevy 3 V-Groove Crank Pulley

421-215

BB Chevrolet 3 V-Groove Billet aluminum OEM style Crankshaft Pulley. This pulley fits Chevrolet 454 7.4L and 502 8.2L late model applications. Replaces Mercruiser Part #90081T1 and casting # 90081C.

Pulley Specifications:
  • 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

Small Block Chevy 3 V-Groove Crank Pulley
Your Price:
$96.99

Big Block Chevy Billet Small Diameter Crank Pulley

740-64201

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".


2- Groove Billet Crankshaft Pulley For Oldsmobile
Your Price:
$134.99

Ford 460 Single Groove Billet Crankshaft Pulley

421-858

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
Your Price:
$76.99

Oldsmobile 2-Groove Billet Crankshaft Pulley

421-856

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
Starting From:
$59.99

This Part has options, please click the button below to order.

Single Groove Billet Crankshaft Pulley For Big Block Chevy

MULTIPLE PART NUMBER OPTIONS. CLICK PART OPTIONS FOR MORE INFO ->

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

Small Block Chevy 3 V-Groove Crank Pulley
Your Price:
$109.99

Small Block Chevy 3 V-Groove Crank Pulley

421-214

SB Chevrolet 3 V-Groove Billet aluminum OEM style Crankshaft Pulley. This pulley fits Chevrolet V6 4.3L, 305 5.0L and 350 5.7L applications all years with a "V" belt. Replaces Mercruiser Part #90081A1 (OEM casting number 90081C)

Pulley Specifications:
  • 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 Generation 4 Sea Pump Pulley
Your Price:
$119.99

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

625-4024

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
Your Price:
$89.99

Big Block Chevy Generation 5 Sea Pump Pulley

421-205

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".


Dual Groove Sea Pump Pulley for use with Crossover Power Steering Systems
Your Price:
$199.99

Dual Groove Sea Pump Pulley for use with Crossover Power Steering Systems

625-4256

Dual Groove Sea Pump Pulley for use with Crossover Power Steering Systems

Gen 7 496 Sea Pump Pulley
Your Price:
$159.99

Gen 7 350, 496, 502 Mag Sea Pump Pulley and Mandrel Kit - Black

625-4278

Replacement 496 Sea Pump Pulley and Mandrel Kit

This billet pulley is designed as a replacement for popular MerCruiser applications. Will fit stock MerCruiser or Hardin Gen 7 Pump. For 350, 496, 502 Mag with 5-3/4" diameter pulley applications only. Includes mandrel and bolts. This kit includes #13 - #16 on the Gen 7 Sea Pump Breakdown. Replaces OEM Mercury# 8M0150724.

Gen 4 Serpentine Pulley 6-Rib
Your Price:
$169.99

HP500 Serpentine Pulley 6-Rib

625-4055

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
Your Price:
$59.99

Serpentine 6-Rib Alternator Pulley

625-3130

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 Pin for 625-4001 Mandrel
Your Price:
$3.99

Dowel Keyway Pin for 625-4001 Mandrel

625-4000

Dowel Keyway For Multi-Stage Sea Pump Mandrel.


Mandrel For Sea Pump Pulley
Your Price:
$36.99

Mandrel For Sea Pump Pulley

421-205M

Mandrel For Sea Pump Pulley


Pulley Mandrel For Multi-Stage Sea Pumps
Your Price:
$31.99

Pulley Mandrel For Multi-Stage Sea Pumps

625-4001

Pulley Mandrel with Keyway For Multi-Stage Sea Pumps.


Mando Alternator Pulley
Your Price:
$89.99

Mando Alternator Pulley

421-213

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
Your Price:
$109.99

Billet Power Steering V-Groove Pulley

421-207

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 - 3-1/4" Smooth Idler Pulley
Starting From:
$105.99

This Part has options, please click the button below to order.

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

MULTIPLE PART NUMBER OPTIONS. CLICK PART OPTIONS FOR MORE INFO ->

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.