84-816608A1 Aftermarket Mercruiser V8 5.0L/5.7L GM-MPI Ignition Cable Kit Straight Boots | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Small-Block V8 MPI Ignition Lead Set - Straight Boots - Replaces Part Number: 84-816608A1

New nine-lead ignition-cable set replacing MerCruiser 84-816608A1 for 5.0L and 5.7L GM V8 MPI/distributor engines requiring straight spark-plug boots.

⚙️ Key Features

• Nine-lead V8 MPI distributor set

• Straight spark-plug boot configuration

• Correct small-block lead lengths and suppression specification

• Cross-references Volvo Penta 3888328

• Includes eight plug leads and one coil lead

🧰 Kit / Assembly Contents

• 8 × Straight-boot spark-plug leads - serviced only as kit P/N 84-816608A1

• 1 × Distributor-to-ignition-coil lead - serviced only as kit P/N 84-816608A1

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 84-816608A1 (MerCruiser lead-set reference)

OEM / Related Numbers:

• 3888328

• 15-815

Aftermarket / Verified Equivalents:

• Recmar: REC15-815

• Volvo Penta: 3888328

• Marine small-block V8 MPI straight-boot lead-set equivalents

🚤 Compatibility

Commonly used on:

• GM 5.0L and 5.7L MPI distributor ignition engines

Typically suits:

• Engine / Equipment models:

• MerCruiser 5.0L MPI

• MerCruiser 5.7L/350 MPI

• Volvo Penta GM small-block MPI engines using 3888328

• HP / Output Range: Approximately 260HP - 320HP

• Engine / System Type: GM small-block V8 petrol marine engine with distributor ignition

• Year Range: Model- and engine-serial dependent

• Serial / Component Identification: Confirm straight plug boots; angled-boot ECM555 sets use 863656A1.

🔌 Function

The ignition leads carry high-voltage energy from the distributor or individual coils to the spark plugs. Marine-grade insulation and correctly fitted terminals prevent leakage, crossfire and radio-frequency interference.

Common signs of failure / service requirement:

• Misfire under acceleration or high load

• Visible arcing in darkness or around damp lead boots

• Cracked, hardened or oil-contaminated insulation

• Excessive lead resistance or open circuit

• Rough idle, crossfire or radio-frequency interference

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging