Mercury Mariner 15HP 2-Stroke Full Service Kit – Japanese 0N Series

Mercury Mariner 15HP 2-Stroke Full Service Kit

For Mercury model 1-015203EL • Serial 0N325507 • Japanese-built International 0N series

This complete maintenance package has been assembled by 4Boats specifically for the Mercury/Mariner 15HP two-cylinder two-stroke engine identified above. It combines a genuine Tohatsu water-pump repair kit—used on the corresponding Japanese-built engine platform—with correctly cross-referenced Mercury service parts and genuine Quicksilver gear lubricant.

Important: this is a 4Boats-assembled service package, not a factory-sealed Mercury boxed kit.

Complete kit contents

• 1 × genuine Tohatsu complete water-pump repair kit 362-87322-1 (earlier reference 362-87322-0)
• Mercury cross-references: 853792A4, 853792T04 and 46-8M0070780
• Water-pump kit includes impeller, drive key, stainless pump cup/liner, wear plate, pump gaskets and fitting hardware
• Impeller cross-reference: Mercury 47-803748 / 47-8M0214944
• 2 × NGK BR7HS-10 resistor spark plugs, Mercury reference 33-8M0181925
• 1 × fuel-filter element, Tohatsu 3AD-02234-0 / Mercury 35-853733002, for serial numbers 0N072167 and later
• 2 × gearbox drain/fill sealing washers, Mercury 27-95220, current replacement 8M0082880
• 2 × 237 ml tubes of genuine Quicksilver Premium Marine Gear Lube SAE 80W-90, part 92-8M0121963 — 474 ml total
• 1 × trim-tab anode, Mercury reference 853762T01
• 1 × round button gearcase anode, Mercury reference 823913Q

Confirmed application

Serial-number split: filter 35-8537331 is used up to serial 0N072166 and is not supplied. This kit contains later filter 35-853733002 required for serial 0N325507.

Gear-lube quantity

The gearbox requires approximately 370 ml. Two 237 ml tubes provide 474 ml, leaving approximately 104 ml for normal filling loss or subsequent topping up.

Always fill from the lower drain opening until lubricant appears at the upper vent opening, following the Mercury workshop procedure.

FAQ

Is this a genuine Mercury boxed service kit?
No. It is a complete package assembled by 4Boats. The water-pump repair kit is genuine Tohatsu 362-87322-1 and is cross-referenced to the Mercury application shown above.

Does it include a complete water-pump repair kit?
Yes. It includes the impeller, key, pump cup/liner, wear plate, gaskets and installation hardware—not only the impeller.

Is enough gearbox oil included?
Yes. The two tubes provide 474 ml against an approximate 370 ml requirement.

Are both external anodes included?
Yes. The trim-tab anode 853762T01 and round gearcase anode 823913Q are included.

Is the thermostat included?
No. The thermostat and thermostat-cover gasket are not included.

Will this fit a Mercury 15HP four-stroke?
No. It is for the Japanese-built Mercury/Mariner 15HP two-stroke International 0N-series application stated above.