# 838638 Exhaust Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta exhaust valve from the Engine group, weighing 0.138 kg and listed for 62 applications across the TAMD, AD, D, TMD, KAMD and MD series.

## 🚤 Compatibility

-   **Engine Family:** TAMD, AD, D, TMD, KAMD, MD, KAD

Full model list at the end of this description.

## ⚙️ Key Features

-   0.138 kg
-   62 applications across six engine series
-   Exhaust valve, paired with inlet valve 838637
-   Quantity varies by assembly, most commonly four

## 🔌 Function

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

## ⚠️ Common Signs of Failure

-   Compression loss with a puffing or hissing exhaust note
-   Valve face burnt, cupped or eroded at the edge
-   Heavy carbon build-up on the head and stem
-   Stem sticking or worn in the guide
-   Clearance closing up as the valve sinks into its seat

## 🛠️ Service Notes

-   Inlet valve 838637 is the matching inlet at 0.095 kg, so the 43 gram difference makes the pair distinguishable, but order by number to be certain
-   Check seat width and recession while the head is off, since a burnt exhaust valve normally means the seat needs work as well
-   Renew valve guides and stem seals as required

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAMD31L-A, TAMD31M-A, TAMD31P, TAMD31P-A, TAMD31S, TAMD31A, TAMD31B, TAMD31D
-   Volvo Penta TAMD41B, TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41M-A, TAMD41P-A, TAMD41P, TAMD41A
-   Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31L-A, AD31P-A, AD31XD
-   Volvo Penta AD41B, AD41D, AD41L-A, AD41P-A, AD41A, AD41BJ
-   Volvo Penta TMD31A, TMD31B, TMD31D, TMD31L-A
-   Volvo Penta TMD41A, TMD41B, TMD41D, TMD41L-A
-   Volvo Penta D41B, D41D, D41L-A
-   Volvo Penta KAD42A, KAD42B, KAD42P-A
-   Volvo Penta KAD44P, KAD44P-B, KAD44P-C
-   Volvo Penta KAMD42A, KAMD42B, KAMD42P-A
-   Volvo Penta KAMD43P, KAMD43P-A, KAMD43P-B
-   Volvo Penta KAMD44P-B, KAMD44P-C, KAMD44P-A
-   Volvo Penta TAMD42WJ-A, TAMD42B
-   Volvo Penta KAD300-A
-   Volvo Penta KAD32P
-   Volvo Penta KAD43P-A
-   Volvo Penta KAMD300-A
-   Volvo Penta MD31A

## Details

- **Price:** 138.22 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 138.22 AUD | In stock |

## Images

- 838638 Exhaust Valve | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/838638-exhaust-valve-genuine-volvo-penta)
> Updated: 2026-09-21