99999-03934-00 6G5-41137-00-94 Yamaha 115CETO Exhaust Adaptor Plate | Genuine Used Part

🔧 Product Description

Genuine Yamaha Exhaust Guide / Adaptor Plate - Part Number: 6G5-41137-00-94

A genuine Yamaha exhaust guide and powerhead adaptor plate used on selected 115HP to 200HP carburetted V4 and V6 two-stroke outboards.

The plate installs between the powerhead and upper casing. It supports the powerhead mounting joint and directs exhaust gases and cooling water into the midsection.

Part number 6G5-41137-00-94 is the exhaust-guide component reference. Number 99999-03934-00 appears as an associated Yamaha packaged or service-assembly reference, but no verified linear supersession between the two numbers has been established.

⚙️ Key Features

• Genuine Yamaha OEM exhaust guide
• Correct component number 6G5-41137-00-94
• Associated service or packaged-assembly number 99999-03934-00
• Directs exhaust and cooling water into the upper casing
• Used on selected Yamaha V4 and V6 two-stroke outboards

🚤 Compatibility

Commonly used on

• Yamaha V4 and V6 carburetted two-stroke upper-casing assemblies
• Long- and extra-long-shaft engines using exhaust guide 6G5-41137-00-94

Typically suits

• Engine models:
• Yamaha 115CETO
• Yamaha P115TLR model families
• Yamaha 130BETO model families using the 6G5 exhaust guide
• Yamaha 150HP V6 two-stroke
• Yamaha ProV150
• Yamaha 175HP V6 two-stroke applications using the same guide
• Yamaha 200HP V6 two-stroke
• Yamaha L200 counter-rotation model families
• 1988 Yamaha ProV150LG
• 1992 Yamaha L200TXRQ
• 1993 Yamaha P115TLRR
• 1994 Yamaha P150TLRS
• HP Range: Approximately 115HP - 200HP
• Engine Type: Yamaha carburetted V4 and V6 two-stroke outboard
• Year Range: Approximately late 1980s - 1990s, with later international applications

🔌 Function

The adaptor plate supports the powerhead and routes exhaust gases and cooling water from the engine into their correct passages in the upper casing.

⚠️ Common Signs of Failure

• Exhaust leakage beneath the powerhead
• Cooling-water leakage at the powerhead joint
• Gasket surfaces corroded or eroded
• Mounting threads stripped
• Internal passages blocked by salt or carbon
• Powerhead cannot seat flat on the midsection

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6G5-41137-00-94 documented Yamaha exhaust-guide reference
• 99999-03934-00 associated Yamaha service or packaged-assembly number
• No confirmed supersession direction between the two references

OEM / Related Numbers

• 99999-03934-00
• 999990393400
• 6G5-41137-00-94
• 6G5411370094
• 6G5-41137-00
• 6E5-42724-00-00 related upper-casing grommet
• Related powerhead-to-exhaust-guide gasket
• Related exhaust-guide-to-upper-casing gasket
• Related water-pipe and exhaust-seal components

Aftermarket / Verified Equivalents

• No aftermarket complete adaptor-plate equivalent
• Aftermarket gaskets may be available separately from Sierra, WSM and Recmar
• No complete branded plate has been verified against 6G5-41137-00-94

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated