805759Q01 Aftermarket Mercruiser V8 Distributor Cap 805759T1 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement V8 Thunderbolt Distributor Cap - Replaces Part Number: 805759Q01

New aftermarket V8 distributor cap replacing MerCruiser 805759Q01/805759T1 for Thunderbolt IV and Thunderbolt V ignition systems.

⚙️ Key Features

• V8 Thunderbolt IV/V cap configuration

• Marine brass terminals and corrosion-resistant construction

• Fits small-block and big-block GM V8 distributors

• Matches rotor assembly 13524T1

• Direct replacement screw and terminal layout

🧰 Kit / Assembly Contents

• 1 × V8 distributor cap - Part Number: 805759Q01

• Cap gasket/seal - supplied or renewed separately according to distributor application

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 805759Q01 → Supersedes 805759T2, 805759T1 and 805759A-series references

• 16457A4, 43557/A1, 90746A1 and 98242/982421 (earlier related references)

OEM / Related Numbers:

• 805759T1

• 805759T2

• 805759A1

• 805759A2

• 805759A5

• 16457A4

• 43557A1

• 90746A1

• 98242

• 982421

Aftermarket / Verified Equivalents:

• Sierra: 18-5395

• GLM: 71510

• Mallory: 9-29403

• CDI Electronics: E64-0010

• Recmar: REC805759Q01

🚤 Compatibility

Commonly used on:

• MerCruiser GM V8 Thunderbolt IV/V distributors

Typically suits:

• Engine / Equipment models:

• 5.0L/305 and 5.7L/350

• 7.4L/454 and 8.2L/502

• V8 Thunderbolt distributor assemblies including 805185A36

• HP / Output Range: Approximately 198HP - 500HP

• Engine / System Type: GM V8 petrol marine engine with Thunderbolt distributor ignition

• Year Range: Principally 1980s through early-2000s; serial-dependent

• Serial / Component Identification: Confirm eight-cylinder Thunderbolt cap and rotor 13524T1.

🔌 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