Mercury Sea Pumps - Mercury Generation 5 / 6 Sea Pump Assemblies

Hardin Marine has once again used their racing support and heritage to develop a superior sea pump replacement option for the Mercruiser generation 5/6 application that requires the mechanical fuel pump mounting provision. This pump uses a 316L heat treated Stainless steel snout with a 17-4 hardened pump shaft and high speed roller bearings to provide the ultimate sea pump foundation for years of service. This pump is available in two (2) versions one which is the standard duty unit using a OEM style plastic impeller housing and impeller and a superduty version that employs Hardin's all stainless steel "Life Time" impeller housing with OEM Mercuiser impeller.  These new pumps include a vent equalizer that allows venting of pressure build up inside the Sea Pump housing that could create premature failure to be released through the existing fuel pump vent system. The pumps are assembled and tested right here in the USA and are the best money can buy.

• Heavy Duty "Extreme" Version
• Extreme Series Stainless Steel Housing
• Hardin Stainless Steel Snout
• 17-4 Hardened Pump Shaft
• High Speed Roller Bearings
• Accepts OEM Factory Pulley
• Includes #625-4221 Vent Equalizer in kit.
• Replaces Mercruiser #'s 46-807151A8, 46-8m0084270, 46-807151A31, and 72774A82
• For parts list, and to buy replacement parts click here

This pump is the enhanced duty unit using a OEM style plastic impeller housing and impeller. The pumps are assembled and tested right here in the USA and are the best money can buy. These pumps include a vent equalizer that allows venting of pressure build up inside the Sea Pump housing that could create premature failure to be released through the existing fuel pump vent system. The pumps are assembled and tested right here in the USA and are the best money can buy.

• Enhanced Duty Version includes vent equalizer system.
• Perfect for users looking for an upgrade on the stock pump design.
• For Extreme Heavy Duty applications use 625-4118 instead.
• OEM Style Plastic Housing
• High Speed Roller Bearings
• Accepts OEM Factory Pulley
• Replaces Mercruiser #'s 46-807151A8 and 72774A82

Replacement Seawater Pump For Mercruiser Gen 5, with Pulley. For engines with V-belt replaces MerCruiser part # 46-807151A8 and 72774A82. Imported. Includes 625-4221 vent adapter kit.

Replacement Seawater Pump For Mercruiser Gen 5, with Pulley. For engines with V-belt replaces MerCruiser part # 46-807151A8 and 72774A82. Brass Rear Housing. Imported. Includes 625-4221 vent equalizer.

2 Stage Sea Pump for Gen 4 & 6 Mercury Applications

• Dual 1" common inlet, 2 x 1" outlets

Note: Pulley is not included, image shown is rendering not actual item. This pump reuses the stock Mercury bracket.