Rebuild Kits & Parts - Hardin Gen 4 Sea Pumps

Mercury Gen 4 Sea Pump
Item No. Part Number Description Qty.
1 625-4063 Body, 2 Piece Replacement 1
2 625-4018 Wear Plate, Sea Pump 1
3 625-1026 O-Ring 1
4 625-4075 Housing, Bearing 1
5 625-4076 Shaft, Single Stage 1
6 625-4078 Bearing, Mercury Gen 4 Sea Pump 2
7 625-4079 Seal, Front - Sea Pump 1
8 625-4005 Seal, Sea Pump 2
9 90031AN-STSS Washer, 5/16 AN 5
10 90031C275-SHS Bolt - SHCS 5/16-18 x 2.75 1
11 90031C350-SHS Bolt - SHCS 5/16-18 x 3.50 4
12: Gen II 625-4265 Wear Plate, Internal 1
12: Gen I 625-4081 Wear Plate, Internal 1
13 625-4011 Impeller, Sea Pump 1
14: Gen II 625-1145 O-Ring 1
14: Gen I 625-1037 O-Ring 1
15 625-4077 Snap Ring 1

Hardin Gen 4 Sea Pump Versions
For Gen 4 Sea Pumps Description
625-4100 Gen 4 Stainless Steel Pump And Bracket Mercury Sea Pump Assembly - V-Belt
625-4103 Gen 4 SS Pump And Bracket Mercury Sea Pump Assembly - Serpentine - BBC
625-4105 Gen 4 Stainless Steel Mercury Pump Complete Assembly - SBC Applications
625-4106 Gen 4 Stainless Steel Mercury Sea Pump and Bracket - SBC Applications
625-4107 Stainless Steel SBC Mercury Pump Complete Assembly
625-4109 Gen 4 Stainless Steel Mercury Pump Complete Assembly - BBC Applications
625-4110 Mercruiser Gen 4 Lifetime Series Stainless Steel Sea Water Pump
625-4118 Mercruiser Gen 5/6 Replacement Lifetime Series Stainless Steel Sea Water Pump
625-4178 Stainless Steel "Lifetime" Sea Pump Overhaul Kit
Replacement Rebuild Kits Gen I Description
625-4173 Hardin Gen. 4, Rev. 1 Sea Pump Master Rebuild Kit
625-4179 Mercury Impeller Rebuild Service Kit for Hardin Pumps
Replacement Rebuild Kits Gen II Description
625-4174 Hardin Gen. 4, Rev. 2 Sea Pump Master Rebuild Kit
625-4189 Impeller Rebuild Service Kit for Hardin Gen. 4, Rev. 2 Sea Pumps
Bearing, Hardin Marine Gen 4 Sea Pump
Your Price:
$15.99

Bearing, Hardin Marine Gen 4 Sea Pump

625-4078

Bearing, Hardin Marine Gen 4 Sea Pump


Bolt, SHCS, SS, 5/16-18x2.75
Your Price:
$1.99

Bolt, SHCS, SS, 5/16-18x2.75

90031C275-SHS

Bolt, SHCS, SS, 5/16-18x2.75



Merc Gen 4 Master Rebuild Plastic Body
Your Price:
$159.99

Hardin Gen 4. Sea Pump with Plastic Housing Master Rebuild Kit

625-4187

Master Rebuild Service Kit - For Gen. 4 Hardin Stainless Pumps with Plastic Rear Body - Mercury Replacement

This master kit is a rebuild service kit for the Hardin Marine stainless pump 625-4111. This kit comes with new wear plates , O-rings, seals, impeller, rear housing and retaining clip.


Hardin Gen 4 Master Rebuild Kit Gen 1
Your Price:
$149.99

Hardin Gen. 4, Rev. 1 Sea Pump Master Rebuild Kit

625-4173

Master Rebuild Service Kit - For Gen. 4, Rev. 1 Hardin Stainless Pumps - Mercury Replacement

This master kit is a rebuild service kit for the Hardin Marine stainless pump 625-4110. This kit comes with new wear plates , O-rings, seals, impeller and retaining clip.

Which Rebuild kit do I need?

Gen. 4, Rev. 1 pumps have a 1/8" drain plug in the rear housing and a slotted front wear plate.
Gen. 4, Rev. 2 pumps have no drain plug and a solid front wear plate.


Hardin Gen 4 Master Rebuild Kit - Gen 2
Your Price:
$149.99

Hardin Gen. 4, Rev. 2 Sea Pump Master Rebuild Kit

625-4174

Master Rebuild Service Kit - For Gen. 4, Rev. 2 Hardin Stainless Pumps - Mercury Replacement

This master kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 and stainless pump 625-4110 . This kit comes with new wear plates , O-rings, seals, impeller and retaining clip.

Which Rebuild kit do I need?

Gen. 4, Rev. 1 pumps have a 1/8" drain plug in the rear housing and a slotted front wear plate.
Gen. 4, Rev. 2 pumps have no drain plug and a solid front wear plate.


Mercury Impeller Rebuild Service Kit
Your Price:
$45.99

Impeller Rebuild Service Kit for Hardin Gen. 4, Rev. 2 Sea Pumps

625-4189

Impeller Rebuild Service Kit - For Gen 4. Rev. 2 Hardin Stainless Pumps - Mercury Replacement

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 and stainless pump 625-4110 . This kit comes with new wear plates , O-rings, and impeller.

Which Rebuild kit do I need?

Gen 4. Rev. 1 pumps have a 1/8" drain plug in the rear housing and a slotted front wear plate.
Gen 4. Rev. 2 pumps have no drain plug and a solid front wear plate.

Mercury

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 . 

Kit includes:
  • (1)Impeller
  • (2) Wear Plate
  • O-rings

Hardin/Mercury Pump Shaft
Your Price:
$109.99

Mercury / Hardin Gen 4 Replacement Sea Pump Shaft (Mercrusier 59501A1)

625-4076

Heavy Duty Replacement shaft for Hardin or Mercruiser Gen 4 Sea Pumps. It replaces Mercruiser OEM # 59501A1.

Mercury Impeller Rebuild Service Kit
Your Price:
$45.99

Mercury Impeller Rebuild Service Kit for Hardin Pumps

625-4179

Impeller Rebuild Service Kit - For Gen 4, Rev. 1 Hardin Stainless Pumps - Mercury Replacement

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 and stainless pump 625-4110 . This kit comes with new wear plates , O-rings, and impeller.

Which Rebuild kit do I need?

Gen. 4, Rev. 1 pumps have a 1/8" drain plug in the rear housing and a slotted front wear plate.
Gen. 4, Rev. 2 pumps have no drain plug and a solid front wear plate.

Mercury

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 . 

Kit includes:
  • (1)Impeller
  • (2) Wear Plate
  • O-rings

O-Ring, Gen I
Your Price:
$2.50

O-Ring, Gen I

625-1145

O-Ring, Gen I


Custom Handcrafted Stainless Fitting 1" NPT To 1-1/4" Straight
Your Price:
$49.98

Pair of Cast Stainless Fitting 1" NPT To 1-1/4" Straight for Sea Pump Kits

540-222150

Pair of Cast 316L Stainless Steel Fittings
1" NPT To 1-1/4" Straight

These fittings are commonly used with Hardin Marine's Lifetime Sea Pumps and Rebuild Kits.
Use With:

Replacement Impeller For Mercury Sea Pumps
Your Price:
$29.99

Replacement Impeller For Mercury OEM and Hardin Sea Pumps

625-4011

  • 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

Seal, Front - Sea Pump
Your Price:
$14.99

Seal, Front - Sea Pump

625-4079

Seal, Front - Sea Pump


Snap Ring
Your Price:
$3.00

Snap Ring

625-4077

Snap Ring


Wear Plate, Internal - Gen I
Your Price:
$14.99

Wear Plate, Internal - Gen I

625-4081

Wear Plate, Internal - Gen I


Wear Plate, No Slot
Your Price:
$12.99

Wear Plate, No Slot

625-4265

Wear Plate, No Slot