# 21423488 Starter Motor | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine 12-volt starter motor for Volvo Penta D4 and D6 common-rail marine diesel engines.

## 🚤 Compatibility

-   **Engine Family:** D
-   **HP Range:** 180-435 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   12V D4/D6 marine starter
-   High-torque reduction-drive construction
-   Current replacement for several earlier Volvo starter numbers
-   Designed for marine heat, vibration and high compression

## 🔌 Function

The starter converts battery power into cranking torque to rotate the engine until combustion begins.

## ⚠️ Common Signs of Failure

-   Starter clicks but does not crank
-   Slow cranking with a charged battery
-   Intermittent engagement
-   Grinding or pinion noise
-   Starter remains engaged after the engine starts
-   Excessive current draw
-   Burnt solenoid or terminals

## 🛠️ Service Notes

-   Disconnect the batteries before touching starter cables, and label the main and control connections as they come off
-   Inspect the ring gear teeth before fitting a new motor; a chipped or worn ring gear will ruin the new pinion
-   Mount the motor square on clean faces with whatever shims the installation uses, so pinion engagement matches what the workshop manual for your engine specifies — never leave shims out to make it fit
-   Clean the main and earth terminals back to bright metal, tighten to the specified figure and refit the insulating boots; a great many failed starters are really voltage drop in the cables and earth path
-   Crank with the engine unable to start first, listening for clean engagement and release, then feel the terminals for heat after several attempts

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21423488 → Supersedes 3801296 → Supersedes 3803938 → Supersedes 3803648 → Supersedes 3588491 → Supersedes 874501

### OEM / Related Numbers

-   3803855 earlier number superseded by this part
-   3804296 earlier number superseded by this part
-   3801296 earlier number superseded by this part
-   3803938 earlier number superseded by this part
-   3803648 earlier number superseded by this part
-   3588491 earlier number superseded by this part
-   874501 earlier number superseded by this part
-   3841359 related reference

### Other-Brand OEM Numbers

-   Mitsubishi: M008T55779
-   Mitsubishi: M008T55779AM

### Aftermarket / Verified Equivalents

-   RECMAR: REC21423488
-   Aftermarket reference: 30626N
-   Orbitrade: 30488
-   WAI: 30626N

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D6-330A-F, D6-370A-F, D6-330D-F, D6-370D-F, D6-300A-F, D6-300D-F, D6-300I-F, D6-330I-F, D6-370I-F, D6-435D-F, D6-400A-F, D6-435I-F
-   Volvo Penta D4-260A-F, D4-260D-F, D4-260I-F, D4-300A-F, D4-300D-F, D4-180I-F, D4-225I-F, D4-300I-F, D4-225A-F

## Details

- **Price:** 1950.31 AUD
- **Vendor:** Volvo Penta
- **Type:** Starters & Starting
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1950.31 AUD | In stock |

## Images

- 21423488 Starter Motor | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21423488-starter-motor-genuine-volvo-penta)
> Updated: 2026-09-19