Bi-Rotational Circulating Pump454 and big blocks

BRAND NEW NOT A REMAN PUMP!

Includes internal and external gaskets

The most common problems with circulation pumps are bearings or seal failures indicated by noise, pulley wobble, or leaking at the bottom of the pump.

The pulley is not included. Approved for Saltwater use.

BI-ROTATIONAL454 AND BIG BLOCK ENGINES (LEFT OR RIGHT HAND).

• 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
• REPLACES: 67859, 17670, 811573, 30103
• FOR BIG BLOCK GM ENGINES WITH STAMPED STEEL TIMING COVER