863009T 806950 Mercruiser Shift Bracket & 50A Circuit Breaker | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 1.7L Diesel Shift Bracket and 50A Circuit Breaker - Part Numbers: 863009T / 88-806950

A genuine used MerCruiser shift-plate bracket supplied with a 50-amp marine circuit breaker. The shift bracket is used on the Cummins MerCruiser Diesel 1.7L-120 D1.7L DTI package, where it supports the shift linkage and related guide components.

The 50A breaker protects the engine's primary electrical feed from overload and short-circuit current. Mercury later superseded breaker 88-806950 to 88-11178A01, with numerous equivalent breakers used by Volvo Penta, Indmar, Crusader, Pleasurecraft and Marine Power.

⚙️ Key Features

• Genuine MerCruiser shift bracket 863009T
• Genuine Mercury / Quicksilver 50A screw-terminal circuit breaker 88-806950
• Shift bracket designed for the 1.7L-120 D1.7L DTI linkage assembly
• Resettable circuit protection for the engine's main electrical supply
• Wide breaker cross-reference coverage across major marine-engine brands

🚤 Compatibility

Commonly used on

• Cummins MerCruiser Diesel 1.7L-120 shift-plate and engine-electrical assemblies
• MerCruiser D1.7L DTI sterndrive packages
• Mercury, Volvo Penta, Indmar, Pleasurecraft, Crusader and Marine Power 50A main-circuit applications using the listed breaker equivalents

Typically suits

• Engine models:
• Cummins MerCruiser Diesel 1.7L-120 D1.7L DTI
• MerCruiser CMD 1.7 MS 120 I/L4 - serial 8810800 and above
• MerCruiser CMD 1.7 MI 120 I/L4 applications using shift bracket 863009T
• MerCruiser 1.7L turbocharged diesel with Alpha One Gen II sterndrive shift linkage
• MerCruiser engine-electrical systems using 50A breaker 88-806950 or 88-11178A01
• Volvo Penta marine-electrical systems using 3854164
• Indmar marine-electrical systems using 805011
• Pleasurecraft / Crusader systems using R153006B
• Marine Power systems using 485006
• HP Range: 120HP for the shift-bracket application
• Engine Type: Cummins MerCruiser 1.7L turbocharged intercooled inline 4-cylinder marine diesel
• Year Range: Approximately 2002 - 2005 for the 1.7L DTI package; circuit-breaker fitment is application controlled

🔌 Function

The shift bracket locates and supports the shift lever, guide and cable hardware so control movement is transferred accurately to the sterndrive. The 50A breaker interrupts the main electrical supply during an overload or short circuit and can be reset after the fault has been corrected.

⚠️ Common Signs of Failure

• Difficult, incomplete or inconsistent forward and reverse engagement
• Bent or corroded bracket causing shift-linkage misalignment
• Complete loss of engine electrical power from an open breaker
• Circuit breaker trips repeatedly under normal operating load
• Loose or corroded breaker terminals create heat, voltage drop or intermittent power

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 863009T current original shift-bracket reference
• 88-11178A01 → Supersedes 88-806950
• 88-806950 earlier Mercury 50A circuit-breaker reference

OEM / Related Numbers

• 863009T - Shift bracket
• 863009
• 88-806950 - 50A circuit breaker
• 806950
• 88806950
• 88-11178A01
• 11178A01
• 11178
• 16397
• 78813
• Volvo Penta: 3854164
• Volvo Penta: 865827T
• Indmar: 805011
• Pleasurecraft / Crusader: R153006B
• Marine Power: 485006
• Chrysler Marine: 4142032
• Crusader: 97568
• Crusader: 98322
• Crusader: 9006077
• GTIN for 806950: 745061285248

Aftermarket / Verified Equivalents

• Sierra: 18-69550
• Sierra: 18-8220
• Blue Sea Systems: BS2142
• Pro Marine: 11178
• F.S.P: 50A push-button breaker replacing 11178A01 / 3854164 / 18-69550
• Klixon-pattern: 7851-37-50 / R153006B
• Generic ignition-protected 50A push-to-reset marine breaker matching the OEM terminal and mounting configuration

📦 Condition

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