Oil Filter – Fits Suzuki, Johnson/Evinrude, Mercury 25-70 HP (Replaces 18-7915-1, 16510-87J00)
Oil Filter – Fits Suzuki, Johnson/Evinrude, Mercury 25-70 HP (Replaces 18-7915-1, 16510-87J00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Filter – Fits Suzuki, Johnson/Evinrude, Mercury 25-70 HP (Repla...
Product Details
This high-quality Oil Filter – Fits Suzuki, Johnson/Evinrude, Mercury 25-70 HP is engineered for 4-Stroke outboard engines from Suzuki, Johnson/Evinrude, and Mercury in the 25 to 70 HP range. It provides reliable protection by filtering out contaminants to ensure clean oil circulation.
This filter serves as a direct replacement for multiple part numbers, including Sierra 18-7915-1, Suzuki 16510-87J00, Johnson/Evinrude 778885, and Mercury 8M0154775.
- Features a simple spin-on design for fast and easy installation.
- Provides high-efficiency filtration with a 20-micron rating to capture harmful particles.
- Includes a new o-ring gasket for a complete, leak-free seal.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Sierra | 18-7915-1 | |
| Suzuki | 16510-87J00 | Also replaces 16510-87J01, 16510-87J02 |
| Johnson/Evinrude | 778885 | Also replaces 5031411 |
| Mercury | 8M0154775 | |
| Mallory Marine | 9-57817 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Suzuki: Fits various DF series 4-stroke outboards from 25 to 70 HP.
For Johnson/Evinrude: Compatible with 4-stroke models in the 25-70 HP range.
For Mercury: Fits a range of 25-70 HP 4-stroke engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Suzuki | DF25 | 25 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Suzuki | DF30 | 30 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Suzuki | DF40 | 40 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Suzuki | DF50 | 50 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Suzuki | DF60 | 60 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Suzuki | DF70 | 70 | 4-Stroke | 16510-87J00/16510-87J01/16510-87J02 | |
| Johnson/Evinrude | Various | 25-70 | 4-Stroke | 778885/5031411 | |
| Mercury | Various | 25-70 | 4-Stroke | 8M0154775 |
Technical Specs
- Product Type
- Engine Oil Filter
- Installation
- Spin-on
- Filtration Rating
- 20 microns
- Connection
- Threaded
- Housing Material
- Metal
- Housing Color
- White
- Fitting Type
- Direct Thread
- Thread Size
- 3/4" x 16 NPT
- Other Technical Attributes
- Includes replacement element and o-ring gasket
What’s in the Box
- 1 x Oil Filter (18-7915-1/16510-87J00)
- 1 x O-ring Gasket
Installation Notes
- Ensure the engine is cool. Place a drain pan under the old oil filter.
- Using an oil filter wrench, turn the old filter counter-clockwise to loosen and remove it.
- Clean the filter mounting base on the engine, making sure the old gasket is not stuck to it.
- Apply a thin film of clean engine oil to the gasket of the new filter.
- Screw the new filter onto the mounting base by hand until the gasket makes contact.
- Tighten the filter an additional 3/4 to one full turn by hand. Do not overtighten.
- Refill the engine with the correct type and amount of oil, then run the engine for a few minutes and check for any leaks around the filter.
- Turn off the engine, wait a few minutes, re-check the oil level, and top off if necessary.
Troubleshooting & FAQ
How do I know if this filter fits my engine?
This filter is designed for most Suzuki, Johnson/Evinrude, and Mercury 4-stroke outboard engines from 25-70 HP. To ensure a perfect match, always cross-reference your existing part number or engine model with the information in our Part Number Matrix and Engine Compatibility tables.
What is the recommended replacement interval?
For optimal engine protection, we recommend replacing the oil filter with every oil change. This is typically every 100 hours of operation or at least once a year, whichever comes first. Always consult your engine's service manual for specific maintenance schedules.
What are the signs of a failing oil filter?
A clogged or failing oil filter can lead to decreased oil pressure, engine sputtering, or unusual metallic sounds from the engine due to oil starvation. If you notice these symptoms, inspect and replace your oil and filter immediately.
Can I use this filter with synthetic oil?
Yes, this oil filter is fully compatible with both conventional and synthetic marine-grade engine oils.
Is the o-ring gasket included?
Yes, a new o-ring gasket is included with every filter to ensure a secure, leak-free installation.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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