10-861788 Aftermarket Mercruiser Starter Motor Bolt | Sawley's Select Marine Parts

🔧 Product Description

A long M10 starter mounting bolt for GM-based MerCruiser petrol engines. It is used with the 863007A1 starter family and cross-references to Volvo Penta 3860764 and Marine Power MP0181-000.

⚙️ Key Features

• High-tensile starter mounting fastener

• M10 × 1.5 thread

• Approximately 110mm overall length

• Correct shoulder and length for the specified marine starter installation

• Sold individually

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 10-861788 (Mercury/MerCruiser OEM bolt reference)

OEM / Related Numbers:

• 10-861788

• Volvo Penta 3860764

• Marine Power MP0181-000

• Starter 863007A1

Aftermarket / Verified Equivalents:

• Volvo Penta: 3860764

• Marine Power: MP0181-000

• Recmar: REC10-861788

🚤 Compatibility

Commonly used on:

• GM-based MerCruiser, Volvo Penta and Marine Power starter installations

Typically suits:

• Engine models:

• MerCruiser 3.0L inline-four petrol engines using starter 863007A1

• MerCruiser 4.3L V6 petrol engines using the matching long M10 bolt

• MerCruiser 5.0L and 5.7L small-block V8

• MerCruiser 6.2L small-block V8

• Selected MerCruiser 7.4L big-block V8 installations

• HP Range: Engine-package specific

• Engine Type: GM-based marine petrol inline-four, V6 or V8

• Year Range: Model- and starter-specific

• Thread: M10 × 1.5

• Overall Length: Approximately 110mm

• Quantity: One bolt

🔌 Function

The bolt clamps the starter nose housing securely to the engine block or bellhousing and maintains the correct pinion-to-ring-gear alignment during high-torque cranking.

Common signs of failure:

• Starter shifts or twists during cranking

• Grinding caused by incorrect pinion-to-ring-gear alignment

• Damaged, stretched or corroded starter bolt

• Stripped M10 block or bellhousing threads

• Loose electrical cables caused by starter movement

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging