Sierra 18-3577-2 Circulating Water Pump

• Sierra circulating water pump
• For all GM V8 454 & 502 cu. in. marine engines with stamped steel or composite timing covers
• Includes pump mounting gaskets
• Pump is bi-directional
• Replaces Mercury 8504541
• Replaces Crusader RA057019
• Replaces Pleasurecraft Marine RA057019
• Replaces OMC 3855991
• Replaces Volvo Penta 3855991
• Replaces Mallory 9-42604
• Replaces Sierra 18-3577; 18-3577-1
• Replaces Sherwood 1100

Big Block Water Circulating Pump for Mercruiser; Volvo; OMC

For: Big block GM engines with stamped steel timing covers

(Bi-Directional)

Used on Mercruiser; Crusader; OMC; Pleasurecraft and Volvo Penta Marine engines.

Replaces:

• Crusader
  • 67859;17670; 30109; 811573
• GM
  • 6269358
• Mercury
  • 811573;8504541; 46-8M0113735; 17670; 67859; 59972; 54534; 49139; Fl1100997; F6269358; Fl1101053; 850454002; 850454; 878342
• Mallory
  •  9-42604
• OMC
  • 3854118;3855991; 0983296; 0986074; 0987447
• OMC Inboard
  • 6269358
• Volvo
  • 3855991; 856609
• GLM - 15301
• Pleasure Craft
  • RA057019
• Pro Marine
  • 64454
• Redline
  • RL3577