816761Q16 Aftermarket Mercruiser Ignition Cable Kit 4.3L | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement 4.3L V6 Distributor Ignition Lead Set - Replaces Part Number: 816761Q16

New seven-lead ignition-cable set replacing MerCruiser 816761Q16 for GM 4.3L V6 engines using Thunderbolt or Delco distributor ignition as specified.

⚙️ Key Features

• Seven-lead V6 distributor set

• Correct 4.3L V6 lead lengths and firing-order routing

• Marine suppression cable and corrosion-resistant terminals

• Supports Thunderbolt and specified Delco applications

• Includes six plug leads and one coil lead

🧰 Kit / Assembly Contents

• 6 × Spark-plug leads - serviced only as kit P/N 816761Q16

• 1 × Distributor-to-ignition-coil lead - serviced only as kit P/N 816761Q16

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 816761Q16 → Related service reference to 813720A11

OEM / Related Numbers:

• 813720A11

• 84-816761Q16

Aftermarket / Verified Equivalents:

• Sierra: 18-8810-1

• CDI Electronics: 631-0013

• Mallory: 9-28016 / 9-28091

• Walker: WK-934-1042

• OMC: 503751

🚤 Compatibility

Commonly used on:

• MerCruiser GM 4.3L V6 distributor ignition engines

Typically suits:

• Engine / Equipment models:

• 4.3L and 4.3LX

• 4.3LH

• 4.3L Alpha/Bravo carburetted and specified EFI distributor applications

• HP / Output Range: Approximately 175HP - 225HP

• Engine / System Type: GM 4.3L V6 petrol marine engine with distributor ignition

• Year Range: Approximately 1985 - 2003; serial-dependent

• Serial / Component Identification: Confirm distributor type and boot angles before ordering.

🔌 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