# 20459326 Inlet Valve | Genuine Volvo Penta Part

## 🔧 Product Description

A genuine cylinder-head inlet valve for TAD1240GE engines from serial number 2012303404. It controls the intake-air path into the cylinder and must seal correctly against the matching seat during compression and combustion.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TWD1240VE
-   Volvo Penta TAD1241GE
-   Volvo Penta TAD1242GE
-   Volvo Penta TAD1250VE
-   Volvo Penta TAD1251VE
-   Volvo Penta TAD1252VE
-   Volvo Penta TAD1250-52VE
-   Volvo Penta TAD1240GE
-   Volvo Penta TAD1241VE
-   Volvo Penta TAD1242VE
-   Volvo Penta TAD1241-42VE

-   **Engine Family:** TWD, TAD
-   **Serial Range:** SN2012303404-

## ⚙️ Key Features

-   Designed for the cylinder-head valve-train assembly
-   Catalogued for TAD1240GE engines from SN2012303404
-   Engine type: Volvo Penta D12 inline-six industrial diesel

## 🔌 Function

Opens to admit charge air into the cylinder and closes to seal the combustion chamber.

## ⚠️ Common Signs of Failure

-   Compression falls in the affected cylinder
-   The engine becomes difficult to start or produces reduced power
-   Air leakage is detected during cylinder or valve testing
-   The valve face, margin or stem is burnt, bent or excessively worn
-   Abnormal valve-train noise or incorrect valve clearance develops

## 🛠️ Service Notes

-   Keep valves in order and fit each one to the seat it is lapped to; a new valve must be lapped in until a continuous, even contact band shows right round
-   Check the guide for wear before fitting a new valve — a good valve in a worn guide will not seat or seal for long
-   Clean the deposits from the port and seat, wash every trace of lapping paste out of the head, and lubricate the stem with clean engine oil on assembly
-   Fit new stem seals and check installed spring height and valve recess against the figures in the workshop manual for your engine
-   Set the valve clearances on assembly and re-check them after the first running period, following the procedure for your engine

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20459326 → Supersedes 20441645

### OEM / Related Numbers

-   20441645 earlier number superseded by this part
-   20459326 - Inlet valve, from SN2012303404
-   3169490 - Earlier or alternate inlet-valve reference
-   859171 - Related valve stem seal
-   3183211 - Related valve springs
-   21310068 - Related valve springs
-   20441486 - Related exhaust valve
-   20742698 - Related rocker arms
-   20742703 - Related rocker arms
-   3183207 - Related valve bridge

### Other-Brand OEM Numbers

-   TRW Engine Components: 48327 - inlet-valve cross-reference

### Aftermarket / Verified Equivalents

-   SLP: ILV-326
-   TBt Parts: 85-5144

## 📦 Condition

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

## Details

- **Price:** 118.87 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 118.87 AUD | In stock |

## Images

- 20459326 Inlet Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20459326-inlet-valve-genuine-volvo-penta)
> Updated: 2026-09-06