# 99419A3 Mercruiser Starter Motor 10455602 Delco Marine | Genuine Used Part

🔧 Product Description

  

Genuine MerCruiser Delco Marine Starter Motor - Part Numbers: 50-99419A3 / 10455602

  

A genuine MerCruiser Delco marine starter motor used on GM-based marine petrol engines. This Delco-style marine starter is used where the MerCruiser starter diagram specifies 50-99419A3 or Delco 10455602.

  

⚙️ Key Features

  

• Genuine MerCruiser / Delco marine starter motor

• Correct MerCruiser reference 50-99419A3

• Delco marine reference 10455602

• Marine petrol-engine starter motor

• Used on GM-based MerCruiser starter systems where specified

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 50-99419A3 MerCruiser starter motor reference

• 50-99419A2 related MerCruiser starter motor reference

• Delco 10455602 marine starter reference

  

OEM / Related Numbers:

  

• 50-99419A3

• 99419A3

• 50-99419A2

• 99419A2

• Delco: 10455602

• Delco Marine starter reference

  

Aftermarket / Verified Equivalents:

  

• Delco-style marine starter replacement for 10455602

• Aftermarket reference: 50-99419A3

• Aftermarket MerCruiser GM marine starter replacement

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser GM-based petrol marine engines

• Delco marine starter systems using 10455602

• MerCruiser stern drive and inboard starter applications using 50-99419A3

  

Typically suits:

  

• Engine models:

• MerCruiser GM 4-cylinder petrol starter applications where 50-99419A3 is specified

• MerCruiser GM V6 petrol starter applications where 50-99419A3 is specified

• MerCruiser GM small-block V8 starter applications where 50-99419A3 is specified

• MerCruiser GM big-block V8 starter applications where 50-99419A3 is specified

• MerCruiser marine petrol engine starter systems using Delco 10455602

  

• Engine Type: MerCruiser GM-based marine petrol engine

• Year Range: model-specific MerCruiser petrol starter applications where the starter diagram lists 50-99419A3 / 10455602

• System Type: Delco marine electric starter motor

  

🔌 Function

  

The starter motor cranks the engine by engaging the flywheel ring gear when the start circuit is activated.

  

Common signs of failure:

  

• Starter clicks but does not crank

• Slow crank with a charged battery

• Starter drive grinding or failing to engage

• Intermittent heat-soak no-start

• High current draw

• Worn brushes, solenoid contacts, armature, bearings or starter drive gear

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 125.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Starter Motors | Marine Starter Motors & Cranking Systems

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 125.00 AUD | In stock |

## Images

- 99419A3 Mercruiser Starter Motor 10455602 Delco Marine | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/99419a3-mercruiser-starter-motor-10455602-delco-marine-genuine-used-part)
> Updated: 2026-07-06