811635T3 Aftermarket Mercruiser Distributor Cap 3.0L | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement 3.0L Four-Cylinder Delco EST Distributor Cap - Replaces Part Number: 811635T3

New aftermarket distributor cap replacing MerCruiser 811635T3 for GM 3.0L four-cylinder engines with Delco EST ignition.

⚙️ Key Features

• Four-cylinder Delco EST cap

• Correct for 3.0L/LX/TKS/MPI-EC distributor family

• Cross-references Volvo Penta/OMC 3854260/986643

• Matches rotor 8M6001254

• Marine brass terminals and corrosion-resistant construction

🧰 Kit / Assembly Contents

• 1 × Four-cylinder Delco EST distributor cap - Part Number: 811635T3

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 811635T3 → Supersedes 811635T and 811635

• 811635 → Supersedes/cross-references 802467

OEM / Related Numbers:

• 811635

• 811635T

• 802467

• 3854260

• 986643

Aftermarket / Verified Equivalents:

• Sierra: 18-5361

• GLM: 71420

• Mallory: 9-29424

• CDI Electronics: E64-0004

• Recmar: REC3854260

🚤 Compatibility

Commonly used on:

• GM 3.0L marine engines with Delco EST distributor ignition

Typically suits:

• Engine / Equipment models:

• MerCruiser 3.0L and 3.0LX

• 3.0L TKS

• 3.0L MPI-EC applications retaining the Delco distributor

• Volvo Penta/OMC 3.0L applications using 3854260/986643

• HP / Output Range: Approximately 115HP - 150HP

• Engine / System Type: GM inline four-cylinder petrol marine engine with Delco EST distributor

• Year Range: Principally 1990s-2010s; serial-dependent

• Serial / Component Identification: Confirm Delco EST distributor; early conventional caps use 393-9459Q1.

🔌 Function

The distributor cap contains the high-voltage terminals that route ignition-coil output to the correct spark-plug lead. It also insulates the terminals and rotor path from moisture, salt and arcing.

Common signs of failure / service requirement:

• Crossfire, backfiring or random-cylinder misfire

• Hard starting in damp or humid conditions

• Carbon tracking, burnt terminals or internal arcing

• Cracks, corrosion or green deposits inside the cap

• Rough idle and loss of power under acceleration

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging