Fuel Filter for MerCruiser Stern/Outdrive Applications – Replaces 35-864572
Fuel Filter for MerCruiser Stern/Outdrive Applications – Replaces 35-864572 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Fuel Filter for MerCruiser Stern/Outdrive Applications – Replaces 3...
Fuel Filter for MerCruiser Stern/Outdrive Applications – Replaces 35-864572 is backordered and will ship as soon as it is back in stock.
Product Details
This replacement fuel filter is intended for applicable MerCruiser stern/outdrive fuel-system applications. It is supplied as a single filter and provides a practical replacement for the listed Mercury/MerCruiser reference numbers.
Use the reference numbers and the original filter configuration to confirm that this replacement matches your application before ordering. Always follow the engine or boat manufacturer's service instructions for fuel-system components.
- Replacement fuel filter for MerCruiser stern/outdrive applications.
- Single replacement filter, not a multi-piece kit.
- Reference numbers are provided for identification and cross-referencing.
Part Number Matrix
The following OEM and aftermarket reference numbers are associated with this fuel filter.
| Brand or Source | Part Number |
|---|---|
| Mercury/MerCruiser | 864572 |
| Mercury/MerCruiser | 35-864572 |
| Mercury/MerCruiser | 35-864572T |
| Mercury/MerCruiser | 864572T |
| Mercury/MerCruiser | 864572T01 |
| Aftermarket reference | 18-7721 |
Engine & Model Compatibility
This filter is listed for MerCruiser stern/outdrive applications. The available product data does not specify individual engine models, model years, horsepower ratings, strokes, or serial-number ranges.
Before installation, compare the existing filter, connection arrangement, fuel-system location, and reference number with the information above. If your engine requires a model-specific filter, confirm the application in the manufacturer's parts catalog or service manual.
Technical Specs
- Product Type
- Fuel filter
- Application
- MerCruiser stern/outdrive fuel-system applications
- Product Configuration
- Single replacement filter
- Primary Reference
- 35-864572
- Additional References
- 864572, 35-864572T, 864572T, 864572T01, and 18-7721
- Brand Status
- Aftermarket replacement
What's in the Box
- 1 x Fuel filter
Installation Notes
- Turn the engine off, allow it to cool, and follow the manufacturer's fuel-system safety procedure.
- Relieve fuel-system pressure as required by the engine or boat service manual.
- Confirm that the replacement filter matches the original filter and the reference number for your application.
- Place an approved container beneath the filter before disconnecting any fuel lines.
- Remove the existing filter carefully and contain spilled fuel in accordance with local safety and disposal requirements.
- Install the replacement filter in the same orientation as the original. If a flow-direction arrow is present, point it in the direction specified by the service manual.
- Secure the fuel lines and clamps correctly, then inspect all connections before restarting the engine.
- Prime the fuel system and check carefully for leaks before operating the boat.
Troubleshooting & FAQ
Which applications is this filter for?
The product is listed for MerCruiser stern/outdrive applications. Because individual model, year, and serial-number ranges are not provided, verify the original filter and reference number before ordering.
Is this a complete kit?
No. This listing is for one replacement fuel filter. Additional hoses, clamps, brackets, seals, or other service parts are not included unless separately stated.
Which reference numbers does it replace?
The associated references are 864572, 35-864572, 35-864572T, 864572T, 864572T01, and aftermarket reference 18-7721. Use these numbers for identification and confirm the physical match before installation.
How do I know whether it will fit my engine?
Compare the reference number, filter configuration, connection arrangement, and installation orientation with your existing part. For model-specific confirmation, consult the engine manufacturer's parts catalog or service manual.
What fuel should be used with this filter?
Use the filter only in the fuel system specified by the engine manufacturer. Do not install it in an application unless the original filter and service documentation confirm the match.
When should the filter be replaced?
Replacement intervals depend on the engine, fuel system, fuel quality, and operating conditions. Follow the maintenance schedule in the applicable service manual and replace the filter if it is contaminated, restricted, damaged, or leaking.
Is this an OEM part?
This listing is for an aftermarket replacement filter. The listed OEM and aftermarket reference numbers are provided to help identify the intended replacement application; the product is not represented as a genuine Mercury/MerCruiser component.
Shipping speed & cost
Shipping options, delivery estimates, and applicable costs are shown at checkout and vary by destination and service selected.
Warranty & returns
Return eligibility and any applicable warranty coverage are subject to the store's current policies. Contact support with your order details if you need assistance.
Safety & Important Information
- Fuel-system service involves flammable liquid. Work in a well-ventilated area away from ignition sources.
- Relieve fuel pressure and follow the manufacturer's safety instructions before removing the filter.
- Verify the reference number, physical configuration, and installation direction before purchase and installation.
- This is an aftermarket replacement, not a genuine OEM component.
- Professional installation is recommended when required by the engine manufacturer or when fuel-system service procedures are unfamiliar.
About Sea Sierra
- Marine Parts Focus — We supply replacement components for a range of marine service applications.
- Application-First Support — Reference numbers and product information are provided to help customers compare replacement parts.
- Practical Replacement Value — Aftermarket alternatives for routine marine maintenance and repair needs.
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