Lower Unit Seal Kit 26-161301 for Mercury Mariner 25 30 HP 2-Stroke Outboard
Lower Unit Seal Kit 26-161301 for Mercury Mariner 25 30 HP 2-Stroke Outboard
Product Overview
Lower unit seal kit for Mercury and Mariner 25 HP and 30 HP two-stroke outboards, supplied as 1 x oil seal, 1 x O-ring seal, 1 x cotter pin and 2 x drain / fill gaskets. It replaces Mercury 26-161301 and covers the prop shaft and gearcase seals. A failed seal shows up as milky gear oil, an oil slick under the leg, or water found when the drain plug is pulled at service.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Lower Unit Seal Kit |
| Engine Type | Mercury / Mariner two-stroke outboard |
| Horsepower Range | 25 HP - 30 HP |
| Contents | 1 oil seal, 1 O-ring, 1 cotter pin, 2 drain gaskets |
| Warranty | Standard |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Mercury (oil seal) | 26-161301 |
Compatible Engines
Fits the following Mercury and Mariner two-stroke outboards:
| Brand | HP | Stroke |
|---|---|---|
| Mercury / Mariner | 25 HP | 2-stroke |
| Mercury / Mariner | 30 HP | 2-stroke |
What's Included
| Component | Qty |
|---|---|
| Oil Seal | 1 |
| O-Ring Seal | 1 |
| Cotter Pin | 1 |
| Drain / Fill Gasket | 2 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Verify your engine model and serial number before ordering
- Fits Mercury and Mariner 25 and 30 HP two-stroke outboards
- Pressure test the gearcase after fitting to confirm the seals hold
- Check the prop shaft for a wear groove where the old seal ran
- 30-Day Easy Returns
- Free Worldwide Shipping
- OEM Quality Without the Markup
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Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
How does shipping work?
Free international shipping on every order — no minimums. We operate a global warehouse network with a main distribution centre in Asia (10-20 business days). We also hold stock in regional warehouses across the United States, Germany, the United Kingdom, Australia, and Poland (opening soon) — most orders arrive in 1-3 business days within those countries and in 2-8 business days to nearby regions. Tracking included.
See our full Shipping Policy.
How do you keep prices fair?
We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.
Learn more on our About Us page.
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We currently accept PayPal — a fast, secure way to pay online. Credit card payments (Visa, Mastercard, American Express) and Shopify Payments are being set up and will be available soon. We appreciate your patience.