6H3-44361-10-00 Yamaha Water Tube | Genuine Used Part

🔧 Product Description

Genuine Yamaha 60HP-70HP Long-Shaft Cooling Water Tube - Part Number: 6H3-44361-10-00

A genuine Yamaha water-transfer tube for selected 60HP and 70HP two-stroke outboards.

The tube connects the gearcase water-pump outlet to the powerhead cooling passage through the driveshaft housing. The -10 version is associated with the applicable long-shaft midsection arrangement.

⚙️ Key Features

• Genuine Yamaha cooling-water tube
• Correct part number 6H3-44361-10-00
• Transfers pump water through the midsection
• Factory tube length and end diameter
• Used on selected 6H3-family 60HP and 70HP outboards
• Suitable for the documented long-shaft housing

🚤 Compatibility

Documented on selected

• Yamaha 70ETLJ - 1986
• Yamaha 70ETH - 1987
• Yamaha 60F two-stroke families using the 6H3 midsection
• Yamaha 70B / 70HP two-stroke families using the matching long-shaft housing
• Additional 6H3 lower-casing diagrams that specify 6H3-44361-10-00
• HP Range: Approximately 60HP-70HP
• Engine Type: Yamaha three-cylinder carburetted two-stroke outboard
• Shaft Length: Commonly 20-inch long shaft
• Fitment Requirement: Confirm tube length and grommet arrangement by complete model code

🔌 Function

The water pump forces cooling water upward through the tube to the powerhead. The tube must seal at both ends to maintain sufficient cooling flow.

⚠️ Common Signs of Failure

• Weak tell-tale or reduced cooling flow
• Engine overheats despite a serviceable impeller
• Tube is corroded, split or crushed
• Lower end misses the pump grommet during installation
• Upper grommet leaks into the driveshaft housing
• Scale or debris restricts the bore

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6H3-44361-10-00 original documented water-tube reference
• 6H3-44361-11-00 related later water-tube version
• Confirm current Yamaha supersession by exact model before substituting

OEM / Related Numbers

• 6H3-44361-10-00
• 6H3-44361-11-00
• Related upper and lower water-tube grommets
• Related water-pump housing and outlet seal
• Related long-shaft driveshaft housing

Aftermarket / Verified Equivalents

• Specialist used or new-old-stock Yamaha water tube
• Professionally fabricated copper, brass or stainless tube only where length, bore, flare and end fit match exactly
• Complete aftermarket water-pump kits service the lower connection but do not normally include this tube
• No verified direct branded replacement tube

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated
• Renew both water-tube grommets during installation