# 20412600 Cap | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta cap used in the TAD730GE and TAD731GE cylinder-head and valve-cover assembly. It closes the dedicated cover opening beside the oil filler cap and cylinder-head plugs.

## 🚤 Compatibility

-   **Engine Family:** TD, D, TAD

Full model list at the end of this description.

## ⚙️ Key Features

-   Valve-cover closure cap
-   Confirmed on the TAD730GE / TAD731GE cylinder head
-   Used at one position
-   Works with the original valve cover and sealing arrangement
-   Protects the valve mechanism from oil leakage and contamination
-   Engine type: Volvo Penta 7-litre six-cylinder diesel

## 🔌 Function

Closes and seals the assigned opening in the valve-cover assembly.

## ⚠️ Common Signs of Failure

-   Oil leakage around the cap
-   Cap loose or missing
-   Cracked or distorted cap
-   Contamination entering the valve cover
-   Seal no longer retaining the cap

## 🛠️ Service Notes

-   Clean and inspect the seating face on the housing as well as the cap — most leaks past a cap are the seat or the seal rather than the cap body
-   Renew any separate O-ring or gasket that goes with the cap, and lubricate rubber seals lightly with clean oil or grease so they slide home instead of rolling or tearing
-   Do not over-tighten a cap into a plastic or aluminium housing; it seals on its gasket or O-ring, not on force, and stripped threads mean a much bigger repair
-   Where a cap blanks a port during a repair, keep it fitted right up to the moment of assembly so nothing enters the opening
-   Check the cap is fully home and that any retaining clip, lanyard or locking tab is secure before returning the boat to service

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20412589 - oil filler cap
-   20412599 - related valve covers
-   20725338 - related valve covers
-   20412597 - related valve-cover gaskets
-   20725316 - related valve-cover gaskets
-   20405895 - cylinder-head plugs

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D7A-B TA, D7A-T, D7A-TA, D7C-B TA, D7C-TA
-   Volvo Penta TAD530GE MECH, TAD530GE EDC4
-   Volvo Penta TAD531GE MECH, TAD531GE EDC4
-   Volvo Penta TAD720GE, TAD720VE
-   Volvo Penta TAD721GE, TAD721VE
-   Volvo Penta TAD722GE, TAD722VE
-   Volvo Penta TAD730GE MECH, TAD730GE EDC4
-   Volvo Penta TAD731GE MECH, TAD731GE EDC4
-   Volvo Penta TAD750GE, TAD750VE
-   Volvo Penta TD720GE, TD720VE PP
-   Volvo Penta TAD532GE EDC4
-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TAD751GE
-   Volvo Penta TAD760VE
-   Volvo Penta TD520GE

## Details

- **Price:** 28.88 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 28.88 AUD | In stock |

## Images

- 20412600 Cap | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20412600-cap-genuine-volvo-penta)
> Updated: 2026-10-08