---
product_id: 486962798
title: "TRIAXMarine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil for inboard/outboard/power sport boat engines, meets NMMA FC-W, JASO-MA. 5 Quarts/1,25 Gallons/4.73 Litres"
price: "¥24808"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/486962798-triaxmarine-ultra-25w-40-4-stroke-full-synthetic-marine-engine
store_origin: JP
region: Japan
---

# TRIAXMarine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil for inboard/outboard/power sport boat engines, meets NMMA FC-W, JASO-MA. 5 Quarts/1,25 Gallons/4.73 Litres

**Price:** ¥24808
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** TRIAXMarine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil for inboard/outboard/power sport boat engines, meets NMMA FC-W, JASO-MA. 5 Quarts/1,25 Gallons/4.73 Litres
- **How much does it cost?** ¥24808 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/486962798-triaxmarine-ultra-25w-40-4-stroke-full-synthetic-marine-engine)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

TRIAXMarine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil for inboard/outboard/power sport boat engines, meets NMMA FC-W, JASO-MA. 5 Quarts/1,25 Gallons/4.73 Litres

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Viscosity | 25W-40 |
| Brand | Triax |
| Vehicle Service Type | 4 Stroke Marine Engines of All Types |
| UPC | 850023978486 |
| Automotive Fit Type | Universal Fit |
| Global Trade Identification Number | 00850023978486 |
| Manufacturer | TRIAX Lubricants LLC |
| Size | 5 Quart |
| Model | Marine |
| Item Weight | 9.72 pounds |
| Product Dimensions | 7 x 5 x 12 inches |
| Item model number | Marine |
| Manufacturer Part Number | MARINE25W40 |

## Product Details

- **Viscosity:** 25W-40
- **Brand:** Triax
- **Vehicle Service Type:** 4 Stroke Marine Engines of All Types
- **UPC:** 850023978486
- **Automotive Fit Type:** Universal Fit

## Images

![TRIAXMarine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil for inboard/outboard/power sport boat engines, meets NMMA FC-W, JASO-MA. 5 Quarts/1,25 Gallons/4.73 Litres - Image 1](https://m.media-amazon.com/images/I/71t53VmpJGL.jpg)

## Questions & Answers

**Q: Can this be used in V6 Mercruser stern drive?**
A: I've been using it in mine with no problems.

**Q: will this work in marine diesel engines?**
A: No, this is designed for gasoline marine engines. Diesel engines have a different chemistry requirement. It "might" work on small diesel engines but we would not recommend or warranty it.

## Frequently Bought Together

- TRIAX Marine Ultra 25W-40 4-Stroke Full Synthetic Marine Engine Oil (5 Quart Jug)
- Quicksilver by Mercury Marine 866340Q03 Oil Filter, MerCruiser Sterndrive and Inboard Engines
- Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz

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**Shop now:** [https://www.desertcart.jp/products/486962798-triaxmarine-ultra-25w-40-4-stroke-full-synthetic-marine-engine](https://www.desertcart.jp/products/486962798-triaxmarine-ultra-25w-40-4-stroke-full-synthetic-marine-engine)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-22*