Oil Filter for Suzuki DF25–DF70 4-Stroke Outboards – Replaces 18-7915-1, 16510-87J00
Oil Filter for Suzuki DF25–DF70 4-Stroke Outboards – Replaces 18-7915-1, 16510-87J00 is backordered and will ship as soon as it is back in stock.
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Oil Filter for Suzuki DF25–DF70 4-Stroke Outboards – Replaces 18-79...
Oil Filter for Suzuki DF25–DF70 4-Stroke Outboards – Replaces 18-7915-1, 16510-87J00 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket engine oil filter is listed for Suzuki DF25, DF30, DF40, DF50, DF60, and DF70 4-stroke outboard engines. It is a spin-on replacement for the oil filter application identified by Sierra reference 18-7915-1.
The company catalog also lists reference numbers associated with Suzuki, Johnson/Evinrude, and Mercury/Mariner applications. Because filter fitment can vary by engine model and production details, confirm the part number and engine application before ordering.
- Spin-on oil-filter design for straightforward replacement.
- Aftermarket replacement for the listed OEM and aftermarket references.
- Use the engine model and reference-number information below to verify compatibility.
Part Number Matrix
These are customer-facing manufacturer, OEM, and aftermarket reference numbers associated with this filter application. They are provided for cross-reference purposes and should be checked against the engine service information.
| Brand | Part Number | Reference |
|---|---|---|
| Sierra | 18-7915-1 | Aftermarket filter reference |
| Suzuki | 16510-87J00 | OEM reference |
| Suzuki | 16510-87J01 | OEM reference listed for this application |
| Suzuki | 16510-87JL0 | OEM reference listed for this application |
| Johnson/Evinrude | 0778885; 778885; 765560 | OEM references listed in the company catalog |
| Johnson/Evinrude | 5031411 | Additional cross-reference |
| Mercury/Mariner | 8M0154775 | OEM reference listed in the company catalog |
| Mallory Marine | 9-57817 | Additional cross-reference |
Engine & Model Compatibility
The company catalog explicitly lists the following Suzuki 4-stroke outboard models:
| Brand | Model | Rated HP | Stroke | Year / Serial Conditions |
|---|---|---|---|---|
| Suzuki | DF25 | 25 HP | 4-Stroke | Not specified |
| Suzuki | DF30 | 30 HP | 4-Stroke | Not specified |
| Suzuki | DF40 | 40 HP | 4-Stroke | Not specified |
| Suzuki | DF50 | 50 HP | 4-Stroke | Not specified |
| Suzuki | DF60 | 60 HP | 4-Stroke | Not specified |
| Suzuki | DF70 | 70 HP | 4-Stroke | Not specified |
Other company records associate this filter with Johnson/Evinrude and Mercury/Mariner reference numbers, but no complete model, year, serial-number, or stroke-specific fitment range was provided for those brands. Verify those applications using the engine model and the original filter reference before purchase.
Technical Specifications
- Product Type
- Engine oil filter
- Installation Style
- Spin-on
- Application
- Suzuki DF25, DF30, DF40, DF50, DF60, and DF70 4-stroke outboards as listed in the company catalog
- Aftermarket Reference
- 18-7915-1
- Thread Specification
- 3/4" x 16 NPT, as listed with the corresponding filter reference in the Sierra catalog
- Year and Serial Range
- Not specified
What’s in the Box
- 1 x Spin-on engine oil filter
No separate gasket, O-ring, replacement filter element, or other accessory is confirmed in the company package information. Do not assume additional components are included unless shown in the product images or stated by the seller.
Installation Notes
- Allow the engine to cool and place a suitable drain pan beneath the filter area.
- Remove the old filter using the appropriate filter wrench if necessary.
- Clean the filter mounting surface and make sure the old sealing gasket has been removed.
- Compare the new filter with the old filter and confirm the thread and sealing surface before installation.
- Lubricate the new filter gasket with clean engine oil if required by the filter manufacturer.
- Install the filter by hand until the gasket contacts the mounting surface, then tighten according to the engine or filter manufacturer’s instructions.
- Refill the engine with the correct oil and amount specified in the engine service manual.
- Run the engine briefly, inspect the filter area for leaks, shut the engine off, and recheck the oil level after it has settled.
Troubleshooting & FAQ
How do I verify that this filter fits my engine?
Confirm that your engine is one of the explicitly listed Suzuki DF25, DF30, DF40, DF50, DF60, or DF70 4-stroke models, or verify one of the listed reference numbers against your existing filter and engine service information. Model, year, serial number, and stroke conditions should be checked together where applicable.
Does this listing include a gasket or O-ring?
The company package information confirms one oil filter but does not separately confirm an included gasket or O-ring. Check the product images and compare the replacement filter with the original before installation.
Is this an OEM filter?
No. This listing is for an aftermarket replacement filter. The OEM and aftermarket numbers shown on this page are reference numbers used to help verify the application.
Can I use the filter on a Johnson/Evinrude or Mercury/Mariner engine?
The company catalog associates the filter with Johnson/Evinrude and Mercury/Mariner reference numbers, including 0778885, 778885, 765560, and 8M0154775. Complete model and year fitment for those brands is not specified here, so verify the exact engine and original filter reference before ordering.
When should the oil filter be replaced?
Replace the oil filter according to the maintenance schedule in your engine service manual. Many owners replace the filter during each oil change, but the correct interval depends on the engine and operating conditions.
Safety & Important Information
- Verify the engine model, stroke, year or serial conditions where applicable, and original filter number before ordering.
- Do not rely on horsepower alone to confirm fitment.
- This is an aftermarket replacement, not an OEM component.
- Follow the engine manufacturer’s service manual for oil type, oil quantity, filter tightening, and maintenance intervals.
- Inspect for oil leaks after installation and before returning the engine to service.
About Sea Sierra
- We supply marine replacement parts with clear reference-number and application information.
- Our listings are intended to help customers compare replacement parts with their original components.
- For the best fit, always confirm the complete engine and part-number details before purchase.
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