Marine Oil Filter for Long GM Engines – Replaces Volvo Penta 3850559

Product Details

This aftermarket marine oil filter for long GM engines is a spin-on replacement associated with Volvo Penta part number 3850559. Catalog information identifies this filter application as the long-GM style and lists a 13/16" x 16 NPT thread specification.

Use the replacement references below only as a cross-reference guide. Confirm the filter style, thread, mounting arrangement, engine model, and service requirements against your engine manufacturer’s documentation before ordering.

• Spin-on oil filter design
• Long-GM marine engine application
• 13/16" x 16 NPT thread specification
• Aftermarket replacement, not an OEM-branded component

Part Number Matrix

The following numbers are listed as replacement references for this long-GM filter application in the available marine filter catalog.

Engine and Application Guidance

This filter is cataloged for the Long GM marine oil-filter application. The available reference does not establish a universal fit for every Volvo Penta, MerCruiser, or other gasoline engine, nor does it confirm every model year, horsepower rating, drive type, or serial-number range.

Before installation, compare the old filter with this product and verify all of the following:

• Long-GM filter style and physical clearance
• 13/16" x 16 NPT mounting thread
• Gasket diameter and mounting-surface design
• Engine manufacturer, model, year, and serial-number requirements
• Oil-filter requirements stated in the engine service manual

Technical Specs

Product Type

Marine spin-on oil filter

Application Style

Long GM

Thread Specification

13/16" x 16 NPT

Fuel Application

Marine engine oil-filtration application; verify engine-specific requirements

Installation

Threaded spin-on installation

Brand Status

Aftermarket replacement

Filter Quantity

One filter

What’s in the Box

• 1 x Long-GM marine spin-on oil filter

Installation Notes

1. Allow the engine to cool as recommended by the engine manufacturer and place a suitable drain pan beneath the filter.
2. Remove the existing filter and allow residual oil to drain.
3. Clean the filter mounting surface and make sure the old gasket has been removed.
4. Compare the new filter’s thread and gasket with the original filter before installation.
5. Lightly lubricate the new gasket with clean engine oil.
6. Install the filter by hand until the gasket contacts the mounting surface.
7. Tighten the filter according to the filter manufacturer’s instructions. Do not use excessive force or tools unless specifically required.
8. Run the engine briefly, inspect for leaks, shut the engine down, and recheck the oil level according to the service manual.

Troubleshooting & FAQ

Safety & Important Information

• Verify the filter thread, gasket, length, clearance, engine application, and service requirements before purchase and installation.
• Do not rely on engine displacement, horsepower, or brand alone to confirm fitment.
• Use the correct engine oil and fill level specified by the engine manufacturer.
• Inspect carefully for oil leaks after installation and before returning the engine to normal service.
• Professional installation is recommended when the correct application or installation procedure is uncertain.

About Sea Sierra

• Marine Parts Focus — We supply replacement components for marine maintenance and repair applications.
• Application-Conscious Fitment — Always compare the original part and manufacturer service information before installation.
• Aftermarket Value — Replacement parts are offered as practical alternatives to help maintain marine equipment.