# 838126 Exhaust Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta exhaust valve from the Engine group, weighing 0.093 kg and listed for 2 applications on the MD series.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD5A
-   Volvo Penta MD5B

-   **Engine Family:** MD

## ⚙️ Key Features

-   0.093 kg
-   2 applications on the MD series
-   Exhaust valve, paired with inlet valve 838125

## 🔌 Function

Opens to release the burnt gases and seals the combustion chamber against firing pressure when closed, working in the hottest part of the head.

## ⚠️ Common Signs of Failure

-   Compression loss with a puffing or hissing exhaust note
-   Valve face burnt, cupped or with a notch in the seat
-   Heavy carbon build-up on the valve head and stem
-   Stem worn or sticking in the guide
-   Valve clearance closing up as the seat recedes

## 🛠️ Service Notes

-   Inlet valve 838125 is the matching inlet at 0.095 kg, just 2 grams heavier, so the two cannot be told apart by weight and must be ordered by part number
-   Exhaust valve 838179 is the other MD exhaust valve here at 0.104 kg with a single application, so confirm which build the engine is before ordering
-   Check the seat width and recession while the head is off, since a burnt exhaust valve usually means the seat needs attention too

## 📦 Condition

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

## Details

- **Price:** 350.15 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 350.15 AUD | In stock |

## Images

- 838126 Exhaust Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/838126-exhaust-valve-genuine-volvo-penta)
> Updated: 2026-08-22