Internal Engine Components | Yamaha Outboard

OEM & Cross Reference Numbers

Yamaha Outboard Fitment

Yamaha used this powerhead gasket-set family across several engine generations. The supplied fitment includes both four-stroke and conventional two-stroke applications.

Representative Yamaha Model-Year Coverage

Mercury 75HP & 90HP Carbureted Fitment

Mercury catalog information supplied for this gasket-set family identifies the following 75HP and 90HP carbureted outboard applications.

What is Included

The 6803 Powerhead Gasket Kit is intended to provide the major gaskets and seals required during compatible powerhead disassembly and reassembly.

Exact contents should be compared with the product image and the parts required for your specific engine before beginning the rebuild.

What This Kit is Used For

A powerhead gasket kit is used when rebuilding or extensively servicing the engine powerhead. Removing cylinder heads, crankcases and other major engine components normally requires replacement of the disturbed gaskets and sealing components before the engine is reassembled.

Using a complete gasket kit helps keep the major sealing parts for the rebuild together rather than purchasing each gasket individually.

Common Uses for a Powerhead Gasket Kit

• Complete powerhead rebuild
• Crankshaft and connecting rod repair
• Piston and cylinder repair
• Cylinder-head removal and overhaul
• Crankcase disassembly
• Major internal engine repairs
• Replacement of aged or damaged engine sealing components

Parts to Inspect During a Powerhead Rebuild

• Pistons and piston rings
• Connecting rod bearings
• Connecting rod bolts
• Crankshaft main bearings
• Crankshaft journals
• Cylinder bores
• Intake and exhaust valves on four-stroke models
• Valve stem seals and valve springs
• Oil pump and lubrication passages
• Cooling passages and thermostats

Key Features and Benefits

• Pro Marine powerhead gasket kit
• Pro Marine part number 6803
• Fits select Yamaha F75 four-strokes
• Fits select Yamaha F80 four-strokes
• Fits select Yamaha F90 four-strokes
• Fits select Yamaha F100 four-strokes
• Fits extensive Yamaha F115 / LF115 applications
• Fits select Yamaha 115HP and 130HP applications
• Fits select Mercury 75HP carbureted outboards
• Fits select Mercury 90HP carbureted outboards
• Replaces multiple 6D8-W0001 gasket-set numbers
• Replaces multiple 67F-W0001 gasket-set numbers
• Replaces multiple 68V-W0001 gasket-set numbers
• Cross references Mercury 804345A1 / A2 / A02

FAQ

What engines does Pro Marine 6803 fit?
Verified applications include select Yamaha F75, F80, F90, F100 and F115 four-strokes, select Yamaha 115HP / 130HP engines and select Mercury 75HP and 90HP carbureted outboards.

Does 6803 fit Yamaha F75?
Yes. Verified applications include F75TLRB, F75TLRC, F75TLRD, later F75TLR applications and select F75LA models.

Does it fit Yamaha F90?
Yes. The supplied fitment includes numerous F90 TJR, TLR, TXR, JA, LA and XA configurations.

Does it fit Yamaha F100?
Yes. Verified applications include several F100TLR and F100TXR models from 1999 through 2003.

Does 6803 fit Yamaha F115?
Yes. The supplied fitment includes extensive F115 and LF115 applications from early 2000 model families through later engines.

Does this gasket kit fit Yamaha 115HP 2-stroke engines?
Yes. The supplied application list includes select 115TLR and 115TXR engines from 2002 through later model families.

Does it fit Yamaha 130HP?
Yes. Verified models include 130TLRA/B/C and 130TXRA/B/C.

Does this fit Mercury 75HP?
Yes. Mercury application data shows compatible 75HP carbureted engines from 0G960500 thru 1B226999, divided between the two catalog serial ranges shown above.

Does it fit Mercury 90HP?
Yes. Mercury 90HP carbureted applications are shown for 0G960500 thru 0T800999 and 0T801000 thru 1B226999.

What Yamaha OEM gasket sets does 6803 replace?
It cross references multiple numbers in the 6D8-W0001, 6N6-W0001, 67F-W0001 and 68V-W0001 families listed above.

What Mercury numbers does it replace?
Mercury references include 804345A1, 804345A2 and 804345A02.

Should I order this kit only by horsepower?
No. Always verify the complete Yamaha model number or Mercury serial number because multiple gasket kits can be used within similar horsepower families.

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