• Replaces Impellers on Hardin Ram Force, Multi-Stage, Lifetime Series Pumps.
• D Shaped Shaft AKA "Single Flat"
• 8 Vane Impeller
• Replacement Impeller For Mercury OEM Sea Pumps
• Replaces OEM Mercruiser # 47-59362T1

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".

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.

• Made from Billet Aluminium
• 5-5/8" Outside Diameter
• 1-3/4" Bolt Circle
• Highly Polished
• 1-1/8" Pulley Groove
• 3" Tall
• Replaces Mercury #899737T

Pulley Mandrel with Keyway For Multi-Stage Sea Pumps.

Dowel Keyway For Multi-Stage Sea Pump Mandrel.

1-1/4" NPT Dual Common Straight Inlet/Outlet Sea Pump Adapter

Features Include:
• Dual water inlet/outlet manifold is manufactured from 316L polished Stainless steel.
• Equal length size inlet tubes for equal distribution provided by the massive 1-1/4" NPT Inlet.
• This unit measures 3-1/8" tall from mounting flange to the end

Equal distribution to each chamber has long been a challenge that until now with modern precision flow technology and data acquisition monitoring was unavailable. Careful engineering was put into the design of both the vacuum and pressure fed characteristics. The design and configuration of the inlet allows tighter easier access and plumbing. Designed for use on a 2 stage pump or 3 stage with a bracket or spacer between the bodies.

Wear Plate for Hardin Marine Multi Stage Sea Pumps

Wear Plate with Hole for Hardin Marine Multi Stage Sea Pumps