# 20783049 Glow Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Application-specific 24v glow plug used in the cylinder head, valve train and cold-start system on the listed Volvo Penta engines. Provides 24-volt preheating in the combustion chamber or inlet starting system to improve cold starting.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD720GE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD660VE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD760VE

-   **Engine Family:** TD, TAD
-   **HP Range:** Approximately 200-300 HP
-   **Year Range:** Approximately 2004 - 2015

## ⚙️ Key Features

-   Genuine Volvo Penta 24v glow plug
-   Provides 24-volt preheating in the combustion chamber or inlet starting system to improve cold starting
-   Documented electrical specification: 24V
-   Engine type: 7-litre inline-six turbocharged industrial diesel
-   6 used per assembly

## 🔌 Function

Provides 24-volt preheating in the combustion chamber or inlet starting system to improve cold starting.

## ⚠️ Common Signs of Failure

-   Hard cold starting or extended cranking
-   White smoke and rough running immediately after start
-   Open-circuit or high-resistance glow plug
-   Preheat fault code or uneven current draw between cylinders
-   Swollen, burnt or carbon-damaged heating tip

## 🛠️ Service Notes

-   Test all six glow plugs and the preheat relay rather than replacing one blindly.
-   Use the specified torque and ensure the bore is clean before installation.

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20783049 → Supersedes 20460458

### OEM / Related Numbers

-   20460458 earlier number superseded by this part
-   3801133 - cylinder-head assemblies
-   23095755 - cylinder-head assemblies
-   20849976 - intake valve seat
-   20849979 - exhaust valve insert
-   20459855 - valve-stem seal
-   20459851 - valve springs
-   20758484 - valve springs
-   20840747 - spring disc
-   11700345 - valve cotters
-   20840807 - thrust washer
-   20792103 - snap ring
-   20792876 - rocker arms
-   20792878 - rocker arms
-   20913851 - adjusting screw
-   20841035 - valve-cover gasket
-   20841027 - valve covers
-   21134620 - valve covers

### Other-Brand OEM Numbers

-   VOE20783049 - Volvo CE prefixed number format

### OEM Reman Alternatives

-   3801894 - remanufactured cylinder head

### Aftermarket / Verified Equivalents

-   SRP: GP-91288

## 📦 Condition

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

## Details

- **Price:** 154.08 AUD
- **Vendor:** Volvo Penta
- **Type:** Starters & Starting
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 154.08 AUD | In stock |

## Images

- 20783049 Glow Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20783049-glow-plug-genuine-volvo-penta)
> Updated: 2026-10-10