Sierra 18-3593 Circulating Water Pump - Replaces 3854017, 3858340 - Fits 3.0L 4 Cyl & GM 4/In-Line 6 Cyl Engines, Bi-Directional

The Sierra 18-3593 Circulating Water Pump is a bi-directional replacement pump built for 3.0L 4 cylinder engines and GM 4 cylinder and in-line 6 cylinder engines. Because it is bi-directional, it can be installed to accommodate either engine rotation, which simplifies stocking and installation compared to a rotation-specific pump. The pump body and internal components are constructed of metal for durability in continuous marine cooling service, where the pump circulates raw water or coolant through the engine to keep operating temperatures in check.

This water pump directly replaces OEM circulating water pumps 3854017 and 3858340, so it is a straightforward swap for engines originally fitted with those pumps. It ships complete with mounting gasket 18-0327, so there is no need to source a separate gasket for the install. Sierra engineers its water pumps to meet or exceed the performance of the original equipment part it replaces, making the 18-3593 a reliable choice for routine maintenance or emergency replacement on applicable 3.0L and GM 4 and 6 cylinder marine engines.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3593
• Product Type: Circulating Water Pump
• Rotation: Bi-Directional
• Fitment: 3.0L 4 cyl. Engines, GM 4 cyl. & in-line 6 cyl. Engines
• Included Gasket: 18-0327 (included)
• Material: Metal
• Weight: 6.37 pounds

Fitment

• 3.0L 4 cylinder engines
• GM 4 cylinder engines
• GM in-line 6 cylinder engines

Replaces (OEM)

• 3854017
• 3858340

Frequently Asked Questions

What engines does the Sierra 18-3593 water pump fit? The 18-3593 fits 3.0L 4 cylinder engines as well as GM 4 cylinder and in-line 6 cylinder engines.

Is the 18-3593 water pump direction-specific? No, the Sierra 18-3593 is a bi-directional circulating water pump, so it can be installed for either direction of engine rotation.

Does the 18-3593 come with a gasket? Yes, it includes mounting gasket 18-0327, so no separate gasket purchase is needed for installation.

What OEM part numbers does the Sierra 18-3593 replace? This pump replaces OEM circulating water pumps 3854017 and 3858340.

What material is the 18-3593 water pump made of? The pump is constructed of metal for durability in marine cooling system service.

How much does the Sierra 18-3593 water pump weigh? The 18-3593 circulating water pump weighs 6.37 pounds.

Is the Sierra 18-3593 an OEM or aftermarket part? The 18-3593 is a Sierra-manufactured aftermarket circulating water pump engineered to meet or exceed the performance of the original equipment part it replaces, OEM numbers 3854017 and 3858340.

What is included in the box with the 18-3593? The Sierra 18-3593 circulating water pump ships with mounting gasket 18-0327 included.

Can the 18-3593 be used on both GM 4 cylinder and 6 cylinder engines? Yes, the 18-3593 is designed to fit GM 4 cylinder engines as well as GM in-line 6 cylinder engines, in addition to 3.0L 4 cylinder engines.

What is the manufacturer part number for this water pump? The manufacturer part number is 18-3593.