Mercury-MerCruiser 861590A05 GM V6/V8 Circulating Pump Drain Hose Assembly

Mercury-MerCruiser 32-861590A05 Circulating Pump Hose Assembly - GM V6 & V8

The Mercury-MerCruiser 32-861590A05 Circulating Pump Hose Assembly is a replacement hose assembly for compatible MCM and MIE GM V6 and V8 engines. This hose is designed for circulating pump applications where specified by the Mercury-MerCruiser parts diagram.

Designed for select GM-based MerCruiser marine engines, this hose assembly helps maintain proper coolant routing and reliable engine cooling system performance. Always confirm fitment by engine model, displacement, serial number, hose routing, parts diagram, or existing hose part number before ordering.

Product Features:

• Mercury-MerCruiser circulating pump hose assembly
• Fits select MCM and MIE GM V6 and V8 engines
• Designed for compatible 305, 350, and 377 CID engine applications
• Helps support proper coolant circulation and engine temperature control
• Direct replacement where part number 32-861590A05 is specified
• Replaces Mercury 32-806825

Product Details:

• Brand: Mercury-MerCruiser
• Manufacturer Part Number: 32-861590A05
• Part Type: Circulating Pump Hose Assembly
• Application: MCM/MIE GM V6 and V8 engines
• Engine Displacement: 305, 350, and 377 CID where specified

Fits Select Applications:

• MCM GM V6 engines where specified
• MCM GM V8 305 CID engines where specified
• MCM GM V8 350 CID engines where specified
• MCM GM V8 377 CID engines where specified
• MIE GM V6 engines where specified
• MIE GM V8 305, 350, and 377 CID engines where specified

Replaces / Interchange:

• Mercury 32-806825
• Mallory 9-44053
• OMC 0509280
• Redline RL71337
• Sierra 18-70944
• Sierra 18-71337

Fitment Note: Hose assembly fitment should be verified by engine model, serial number, displacement, cooling system configuration, hose routing, parts diagram, and existing hose part number before ordering. Please confirm this circulating pump hose assembly is correct for your Mercury-MerCruiser application before purchasing.

California Residents: WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov