Quicksilver Gen III Cool Fuel Filter Kit 35-13523

The Mercury MerCruiser Quicksilver 35-13523 Fuel Filter Kit is an internal cartridge-style fuel filter service kit used in compatible Gen III Cool Fuel module assemblies on MerCruiser MPI sterndrive and inboard engines. It installs inside the frame-mounted Cool Fuel housing and helps filter fuel before it reaches high-pressure multi-port fuel injection components.

This filter is commonly serviced with the related flat screen disc filter, 35-892665, when maintaining the Gen III Cool Fuel module.

Key Features

• Mercury / MerCruiser / Quicksilver Cool Fuel module filter kit.
• Part number: 35-13523.
• Common aftermarket format: 35-13523-1.
• Internal cartridge-style fuel filter.
• Designed for compatible Gen III Cool Fuel systems.
• Filtration reference: 20 micron.
• Helps trap dirt, rust, sediment, and fuel-borne contamination.
• Protects high-pressure MPI fuel system components.
• Installs inside the cast aluminum Cool Fuel module enclosure.
• Typically supplied with the cylindrical filter body and related sealing components.
• Commonly serviced alongside flat screen disc filter 35-892665.

Fuel System Compatibility

Common application context includes 2004 and newer MerCruiser gasoline MPI engines equipped with Gen III Cool Fuel modules, including:

• MerCruiser 5.0L MPI applications where listed.
• MerCruiser 5.7L / 350 MAG MPI Alpha and Bravo applications where listed.
• MerCruiser 6.2L MX MPI applications where listed.
• MerCruiser 6.2L Horizon applications where listed.
• MerCruiser 496 MAG / 8.1L applications where listed.
• MerCruiser 496 MAG H.O. applications where listed.
• Compatible MerCruiser V8 sterndrive and inboard fuel systems using the Gen III Cool Fuel module.

Use this kit only where the engine serial number and parts diagram confirm 35-13523, 35-8M0093688, or a verified equivalent.

Serial Number Fitment Notice

Confirm fitment by MerCruiser engine serial number, engine model, fuel module generation, and parts diagram before ordering. MerCruiser Cool Fuel systems use multiple internal service parts, and similar engines may require different filters depending on model year and serial range.

This listing is for the internal cylindrical cartridge filter kit. It is not the flat disc screen filter, fuel pump, cooler housing, regulator, or complete Cool Fuel module assembly.

When This Part Needs Replacement

Replace this filter during scheduled Gen III Cool Fuel service, when replacing the related screen disc, after contaminated fuel exposure, or when the engine shows symptoms of fuel restriction such as hard starting, hesitation, rough idle, surging, loss of power, or stalling under load.

Replacement is also recommended any time the Cool Fuel module is opened and the filter or sealing components show contamination, swelling, cracking, flattening, or damage.

Installation Notes

Relieve fuel system pressure before service and work in a well-ventilated area away from sparks, flame, and hot surfaces. Open the Gen III Cool Fuel housing according to the MerCruiser service procedure. Remove the old filter and sealing components carefully, then inspect the housing for debris, water, corrosion, damaged gaskets, and fuel varnish.

Install the new filter and supplied sealing components in the correct positions. After reassembly, prime the fuel system as required, check carefully for leaks, and run the engine while inspecting the Cool Fuel module and fuel connections.

Alternate / Cross-Reference Part Numbers

• Mercury / MerCruiser / Quicksilver 35-13523 primary part number
• Engineered Marine Products 35-13523-1 aftermarket reference; verify by serial number
• Mercury / Quicksilver 35-8M0093688 interchange / updated service reference; verify by serial number
• Mercury / Quicksilver 35-866171A01 related OEM reference; verify by serial number
• Sierra Marine 18-7977 cross-reference reference; verify by serial number
• Mallory Marine 9-37827 cross-reference reference; verify by serial number
• Mercury / Quicksilver 35-892665 related flat screen disc filter; not the same part

Parts Desk Insight

Gen III Cool Fuel modules use more than one filter component, so the exact part matters. 35-13523 is the internal cylindrical cartridge-style filter, while 35-892665 is the flat screen disc used in the same service area. For best results, verify the engine serial number and inspect the module for water, debris, and gasket damage while it is open.

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