Sierra Water Pump Wp-5100

Sierra 18-3577-2 Big Block Water Circulating Pump for MerCruiser, Volvo, OMC

Fits: Big block GM engines with stamped steel timing covers

(Bi-Directional)

Used on MerCruiser, Crusader, OMC, Pleasurecraft and Volvo Penta Marine engines.

s/s from 18-3577-1

Interchangeable with:

Crusader

17670

30109

67859

811573

EMP

95-01660

GM

6269358

MerCruiser Stern Drive

17670

46-8M0113735

49139

54534

59972

67859

811573

850454

850454002

8504541

878342

F6269358

FI1100997

FI1101053

MES

WP415M

OMC Inboard

6269358

OMC Stern Drive

3854118

3855991

983296

986074

987447

Pleasurecraft

RA057019

Volvo Penta

3855991

856609

Frequently Asked Questions

• What is the Sierra 18-3577-2 Big Block Water Circulating Pump used for? The Sierra 18-3577-2 Big Block Water Circulating Pump is designed for Big Block GM engines with stamped steel timing covers. It is a bi-directional water circulating pump used on MerCruiser, Crusader, OMC, Pleasurecraft, and Volvo Penta marine engines.
• What engines does the Sierra 18-3577-2 water circulating pump fit? This water circulating pump fits Big Block GM engines with stamped steel timing covers. The supplied information specifies that the pump is bi-directional and is used on MerCruiser, Crusader, OMC, Pleasurecraft, and Volvo Penta marine engines.
• Is the Sierra 18-3577-2 water circulating pump bi-directional? Yes. The Sierra 18-3577-2 water circulating pump is specified as bi-directional. It is designed for Big Block GM engines with stamped steel timing covers and is used across the listed MerCruiser, Crusader, OMC, Pleasurecraft, and Volvo Penta marine engine applications.
• What marine engine brands use the Sierra 18-3577-2 water circulating pump? The Sierra 18-3577-2 is used on MerCruiser, Crusader, OMC, Pleasurecraft, and Volvo Penta marine engines. The application is specifically listed for Big Block GM engines with stamped steel timing covers, so verify your engine configuration before ordering.
• What part numbers are interchangeable with Sierra 18-3577-2? The supplied interchange numbers include Crusader 17670, 30109, 67859, and 811573; EMP 95-01660; GM 6269358; Pleasurecraft RA057019; and Volvo Penta 3855991 and 856609. Additional MerCruiser Stern Drive and OMC numbers are also listed in the supplied product information.
• Does Sierra 18-3577-2 replace another Sierra water circulating pump? Yes. The supplied product information identifies Sierra 18-3577-2 as a superseding part from Sierra 18-3577-1. Verify your existing pump part number and engine configuration to confirm that this superseding water circulating pump is correct for your application.