# 21345611 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta threaded or press-fit plug used to close a machined service opening, gallery or unused port in a specified engine assembly. Correct thread or diameter, sealing method and material are essential because a visually similar plug can have a different pressure rating or insertion depth.

## ⚙️ Key Features

-   Genuine Volvo Penta engine plug
-   Position-specific thread or interference fit
-   Closes an oil, coolant, air or service opening
-   Requires the specified sealant, washer or installation depth
-   Match exact engine schematic and serial number
-   Engine type: Volvo Penta marine or industrial diesel engine

## 🔌 Function

Seals the assigned machined opening so oil, coolant, air or combustion gas remains within the intended passage.

## ⚠️ Common Signs of Failure

-   Oil or fluid leakage at the sealing lip
-   Hardening, cracking or lip damage
-   Grooving or corrosion on the mating shaft surface
-   Seal displacement or incorrect installation depth
-   Contamination or repeated leakage after replacement

## 🛠️ Service Notes

-   Clean the threads and the seating face before fitting, and make sure the opening itself is clear of old sealant, swarf and corrosion
-   Renew the sealing washer or O-ring where one is fitted rather than reusing a flattened one, and only use thread sealant where the workshop manual for your engine calls for it
-   Tighten to the figure given in the workshop manual for your engine — plugs in aluminium and other soft castings strip easily, and a plug pulled up hard to cure a leak usually distorts the seat and makes it worse
-   Where the plug closes an oil, fuel or coolant passage, run the engine up to temperature afterwards and check the joint under pressure before signing the job off
-   Keep removed plugs paired with the holes they came out of during a strip-down — plugs of very similar appearance often differ in thread, reach or sealing type

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21345611 → Supersedes 21087703

### OEM / Related Numbers

-   21087703 earlier number superseded by this part
-   20513933 - related Volvo Penta plug reference used in another assembly; not automatically interchangeable

## 📦 Condition

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

## Details

- **Price:** 140.13 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 140.13 AUD | In stock |

## Images

- 21345611 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21345611-plug-genuine-volvo-penta)
> Updated: 2026-09-06