Your Mercury deserves better than cheap aftermarket parts that fail after one season. This genuine WASHER, POPPET SPRING delivers the reliability your engine was built for.

Designed and manufactured to Mercury Marine OEM standards, this seal ensures reliable operation across all engine RPM ranges. Part number 85303 is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Why risk your Mercury engine with questionable aftermarket parts? Genuine part 85303 is built to last, backed by Mercury Marine’s decades of marine engineering expertise and proven reliability.

Compatible Mercury Marine Engines

FITS: 105-140HP MARINER, MERCURY

• Fits MARINER, MERCURY 105-140HP engines
• Compatible HP: 105HP, 115HP, 140HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

105HP Models

• 105HP JET (Mariner): 0D082000-0G303045, 0G303046-0G760299
• 105HP JET (Mercury): 0D082000-0G303045, 0G303046-0G760299

115HP Models

• 115HP OUTBOARD (Mariner): 5430527-5738890, 5738891-6436122, 7191308-7208847, 8062460-8062634
• 115HP OUTBOARD (Mercury): 5314656-5600966, 5600967-6436122, 7131213-7147987, 7147988-7208847, 8061120-8061269

140HP Models

• 140HP OUTBOARD (Mariner)
• 140HP OUTBOARD (Mercury): 5327663-5625107, 7132513-7150412

Looking for your Mercury engine serial number? Our helpful guide shows you exactly where serial numbers are located on different engines.

Verification & Support

Questions about part 85303? Use our parts finder tool to verify fitment yourself. Prefer to talk to an expert? Use the contact buttons at the bottom of this page to reach our team by text, call, or email

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