Quicksilver Oil Filter 8M0116378

The Mercury MerCruiser Quicksilver 8M0116378 is a genuine screw-on oil filter engineered for MerCruiser sterndrive and inboard engines manufactured by Ford Motor Company. Its M-Pleated filtration media removes damaging contaminants from circulating engine oil, while the anti-drainback valve helps retain oil in the filter for quicker lubrication at startup and fewer dry-start conditions.

Built specifically for marine service, the filter uses a metal shell that Mercury describes as 50% thicker than conventional filter housings, with a durable corrosion-resistant finish applied inside and out. It is manufactured to Mercury Marine OEM specifications for proper fit, filtration and engine protection.

Key Features

• Genuine Mercury Marine / Quicksilver replacement oil filter
• Designed for Ford-manufactured MerCruiser MCM and MIE engines
• Screw-on spin-filter construction
• Superior M-Pleated cleansing media
• Anti-drainback valve supports startup lubrication
• Helps reduce damaging contaminants in the engine-oil system
• Metal shell is 50% thicker than conventional filter housings
• Corrosion-resistant internal and external finish
• Manufactured to Mercury Marine OEM specifications
• Current OEM part number: 8M0116378
• Mercury formatted number: 35-8M0116378
• UPC/GTIN: 745061965492

Engine Compatibility

Designed for MerCruiser sterndrive and inboard engines manufactured by Ford Motor Company. Common MCM and MIE applications include Ford 302 / 5.0L and Ford 351 / 5.8L marine-engine packages.

Representative MerCruiser applications include:

• 215 Ford 302 V8
• 215 MIE Ford 302 V8
• 225 Ford 302 V8
• 225 MIE Ford 302 V8
• 225-S Ford 302 V8
• 233 Ford 351 V8
• 233 MIE Ford 351 V8
• 255 Ford 351 V8
• 255 MIE Ford 351 V8
• 888 Ford 302 V8

This filter is for Ford-based MerCruiser engines. It should not be confused with oil filters intended for GM-based MerCruiser engine families.

Serial Number Fitment Notice

Confirm the complete MerCruiser engine model, serial-number range and original oil-filter number before ordering. Older Ford 302 and 351 marine engines were offered in several MCM and MIE configurations, and previous repairs may have added a remote filter head or changed the original mounting arrangement.

The 710-35-8M0116378 number is an inventory-style presentation of the product. The Mercury Marine ordering number is 8M0116378, also commonly written as 35-8M0116378.

When This Part Needs Replacement

Replace the oil filter whenever the engine oil is changed and at the interval specified in the applicable MerCruiser maintenance schedule.

Earlier replacement may be appropriate following:

• Extended trolling or prolonged low-speed operation
• Heavy-load or high-temperature use
• Fuel, coolant, water or debris contamination
• Long periods of seasonal storage
• Internal engine repairs
• Abnormal oil-pressure conditions
• Visible corrosion, denting or leakage

Installation Notes

Remove the old filter and confirm that its sealing gasket has not remained attached to the filter mounting surface. Clean the filter head and lightly lubricate the replacement-filter gasket with clean engine oil.

Install the new filter by hand according to the MerCruiser service-manual instructions. Do not overtighten.

After installation:

1. Refill the engine with the specified oil.
2. Start the engine and verify normal oil pressure.
3. Inspect the filter body and gasket for leakage.
4. Shut the engine down and allow the oil to settle.
5. Recheck and correct the engine-oil level.

Alternate/Superseded Part Numbers

Mercury Marine replacement and superseded numbers include:

• 8M0116378
• 35-8M0116378
• 802886Q
• 35-802886Q
• 35-802886T
• 802886Q12
• 60565
• 56874
• F724002

Commonly associated marine cross-reference numbers include:

• Sierra 18-7875-1
• WIX 51515
• Baldwin B2
• FRAM PH8A
• Mallory 9-57802
• OMC 173231
• OMC 502900
• Pleasurecraft / PCM R077001
• Crusader 9002514
• Chrysler Inboard 1851658

Cross-reference numbers are comparison aids only. Confirm the engine and original OEM number before substituting brands.

Parts Desk Insight

This is the long Ford-style MerCruiser filter, not the more common GM marine-engine filter. The easiest way to avoid a mismatch is to confirm that the engine is Ford-based and then match 8M0116378 against the engine serial number or original Mercury parts diagram.