51115-90J00 Suzuki 5033841 Johnson Water Return Union | Genuine Used Part

🔧 Product Description

Genuine Suzuki / Johnson Water Return Union - Part Numbers: 51115-90J00 / 5033841

A genuine Suzuki-manufactured water-return union used in the engine-holder and exhaust-adapter cooling system of selected Suzuki and Suzuki-built Johnson four-stroke outboards.

Suzuki part number 51115-90J00 directly cross-references Johnson / Evinrude part number 5033841. The fitting connects the applicable cooling-water return passage and must seal correctly against the matching O-ring and engine-holder components.

⚙️ Key Features

• Genuine Suzuki-manufactured cooling-system fitting
• Suzuki part number 51115-90J00
• Johnson / Evinrude cross-reference 5033841
• Installed in the engine-holder or exhaust-adapter assembly
• Directs cooling-water return flow through the outboard midsection
• Factory-machined hose and sealing surfaces

🚤 Compatibility

Commonly used on

• Suzuki four-stroke outboards
• Suzuki-built Johnson four-stroke outboards
• Engine-holder and exhaust-adapter cooling-water assemblies

Documented applications include

• Suzuki DF90
• Suzuki DF100
• Suzuki DF100A
• Suzuki DF115
• Suzuki DF115A
• Suzuki DF140
• Suzuki DF140A
• Suzuki DF150
• Suzuki DF175
• Selected Johnson 90HP four-stroke models built on the Suzuki platform
• Engine Type: Suzuki inline-four EFI four-stroke outboard
• Fitment Requirement: Confirm the engine model, year and serial number before installation

🔌 Function

The union connects the cooling-water return passage within the engine-holder or exhaust-adapter assembly. It allows used cooling water to flow through the designed return circuit without leaking into the surrounding midsection.

⚠️ Common Signs of Failure

• Cooling water leaks around the union
• Corrosion or pitting damages the sealing surface
• Hose connection is cracked or distorted
• O-ring no longer seals correctly
• Restricted passage reduces cooling-water return flow

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 51115-90J00 current documented Suzuki water-return union
• 5033841 corresponding Johnson / Evinrude service reference

OEM / Related Numbers

• Suzuki 51115-90J00
• Johnson / Evinrude 5033841
• OMC 05033841
• 09280-26006 related O-ring
• 51211-90J22 related engine-holder gasket
• 51122-90J00 related mount-case cover

Aftermarket / Verified Equivalents

• Suzuki 51115-90J00 and Johnson / Evinrude 5033841 are direct OEM cross-references
• Specialist used or reconditioned water-return union
• Aftermarket O-ring and engine-holder gasket equivalents are available
• No verified direct aftermarket replacement union

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated
• O-ring and gasket should be replaced before installation where applicable