# 21192358 Glow Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine pre-heating glow plug used across Volvo Penta D1-13, D1-20, D1-30 and D2-40 marine diesel engines. Part number 21192358 replaces earlier Volvo Penta glow plug 3809641 and has several documented manufacturer equivalents.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-40F
-   Volvo Penta D1-30F
-   Volvo Penta D1-13F
-   Volvo Penta D1-20F

-   **Engine Family:** D
-   **HP Range:** 13-40 HP

## ⚙️ Key Features

-   Current replacement for glow plug 3809641
-   11V rated element for a 12V pre-heat system
-   Approximately 7.3A current draw
-   M8x1 mounting thread and approximately 69 mm overall length
-   Verified NGK, HKT, Cargo, Kubota and Nanni equivalents
-   3 used per assembly

## 🔌 Function

The glow plug heats the combustion chamber before and during cold starting to improve diesel ignition.

## ⚠️ Common Signs of Failure

-   Hard cold starting
-   White smoke after start-up
-   Uneven running when cold
-   Glow-plug warning or pre-heat fault
-   Open-circuit element
-   Excessive current draw or short circuit
-   Burnt or damaged terminal

## 🛠️ Service Notes

-   Confirm the M8x1 thread and roughly 69 mm overall length against the plug removed before fitting this one, since D1/D2 heads have used more than one glow-plug thread over the years
-   This engine runs 3 glow plugs — test all three (and the preheat relay/circuit) rather than replacing a single suspect plug on its own
-   If the genuine plug isn't available, NGK, HKT, Cargo, Kubota and Nanni equivalents are documented for this application — check the 11V/7.3A rating matches before substituting

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21192358 → Supersedes 3809641

### OEM / Related Numbers

-   3809641 earlier number superseded by this part
-   Nanni 970307591

### Other-Brand OEM Numbers

-   Kubota 16851-65512

### Aftermarket / Verified Equivalents

-   NGK: YE01
-   HKT: PS-206
-   Cargo: 100518
-   Nanni: 970307591

## 📦 Condition

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

## Details

- **Price:** 237.2 AUD
- **Vendor:** Volvo Penta
- **Type:** Starters & Starting
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 237.20 AUD | In stock |

## Images

- 21192358 Glow Plug | Genuine Volvo Penta Part
- 21192358 Glow Plug | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21192358-glow-plug-genuine-volvo-penta)
> Updated: 2026-10-08