19514A2 Mercruiser Distributor | Genuine Used Part

🔧 Product Description

Genuine MerCruiser Distributor Assembly - Part Number: 19514A2

A genuine MerCruiser distributor assembly used in selected petrol sterndrive and inboard ignition systems. This distributor routes high-voltage spark to the correct cylinder and supports correct ignition timing on compatible MerCruiser marine engines.

⚙️ Key Features

• Genuine Mercury MerCruiser distributor assembly

• Listed with part number 19514A2

• Used in marine petrol distributor ignition systems

• Related to Thunderbolt ignition distributor families

• Must be matched by engine model, ignition type and serial-numbered diagram

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 19514A2 earlier MerCruiser distributor reference

• 805185A36 later related distributor service assembly in selected Thunderbolt IV applications

OEM / Related Numbers:

• 19514A2

• 19514-A2

• 805185A36

• Distributor assembly

• Thunderbolt ignition distributor family

• Related cap: 815407A2

• Related ignition coil kit: 8M0079202

Aftermarket / Verified Equivalents:

• Sierra: 18-5471 for selected V6 distributor applications

• Aftermarket MerCruiser complete distributor assemblies by exact OEM number and ignition type

🚤 Compatibility

Commonly used on:

• MerCruiser petrol sterndrive and inboard distributor ignition systems

Typically suits:

• Engine models:

• MerCruiser 4.3L / 4.3LX Alpha ignition distributor applications

• MerCruiser 5.0L V8 Thunderbolt ignition distributor applications

• MerCruiser 5.7L V8 Thunderbolt ignition distributor applications

• MerCruiser GM V6 and V8 petrol engines where 19514A2 or related 805185A36 is specified

• HP Range: commonly 175HP - 260HP depending on engine family

• Engine Type: MerCruiser GM petrol sterndrive / inboard ignition system

• Year Range: application-dependent Thunderbolt ignition family use

• Serial / Model Note: Match by exact engine serial number, distributor cap style, shaft configuration and ignition module type.

🔌 Function

The distributor routes high-voltage spark from the ignition coil to each cylinder in firing order and supports ignition timing stability.

Common signs of failure:

• Hard starting

• Misfire under load

• No spark at plugs with coil output present

• Worn shaft bushings or rotor contact damage

• Corroded cap terminals

• Timing scatter or unstable ignition timing

• Engine runs poorly after cap, rotor and leads are replaced

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated