# 21596642 Control Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Factory control valve for the exhaust-brake/engine-control circuit used across the listed Volvo Penta TAD12, TAD13, TAD16 and TWD16 industrial engines. Part 21596642 replaces 21452473 and is calibrated for the original actuator and pressure/flow arrangement.

## 🚤 Compatibility

-   **Engine Family:** TAD, TWD

Full model list at the end of this description.

## ⚙️ Key Features

-   Genuine Volvo Penta engine/exhaust-brake control valve
-   Supersedes valve 21452473
-   Factory-calibrated ports, flow and actuation
-   Used across documented 12.8-litre and 16.1-litre engine families
-   Direct replacement only where the catalogue calls for 21596642
-   Engine type: 12.8-litre and 16.1-litre inline six-cylinder turbocharged industrial diesel

## 🔌 Function

Directs or regulates the operating medium that actuates the associated engine-control or exhaust-brake function.

## ⚠️ Common Signs of Failure

-   Exhaust brake or controlled function does not operate
-   Delayed, weak or intermittent actuation
-   Air/fluid leakage at the valve or connections
-   Sticking valve spool caused by contamination
-   Engine-control fault code or reduced braking performance

## 🛠️ Service Notes

-   Work clean and cap ports and pipes as they come off — a control valve is a close-fitting part and grit is what kills it
-   Find out why the old valve failed: contamination, water or degraded fluid will take the new one out just as fast, so check the fluid and the filters at the same time
-   Renew the O-rings, seals and gaskets that come with the valve, lightly lubricated with the system fluid, and make sure the ports and seal faces are clean
-   Tighten the valve and its unions evenly to the figures in the workshop manual for your engine or drive; overtightening distorts the body and can make the spool stick
-   Refill and bleed the system to the manual's procedure, then test function at low load first and check for leaks and correct operation before normal use

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21596642 → Supersedes 21452473 → Supersedes 20574702

### OEM / Related Numbers

-   21452473 earlier number superseded by this part
-   20574700 earlier number superseded by this part
-   20574690 related valve reference

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
-   Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
-   Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
-   Volvo Penta TAD1650VE-B/51VE, TAD1650GE, TAD1650VE
-   Volvo Penta TAD1351GE, TAD1351-53VE
-   Volvo Penta TAD1643VE-B, TAD1643VE
-   Volvo Penta TAD1350GE
-   Volvo Penta TAD1352GE
-   Volvo Penta TAD1353GE
-   Volvo Penta TAD1354GE
-   Volvo Penta TAD1355GE
-   Volvo Penta TAD1371-75VE
-   Volvo Penta TAD1651GE
-   Volvo Penta TAD1660-62VE
-   Volvo Penta TAD1662VE EU5
-   Volvo Penta TAD1670-72VE
-   Volvo Penta TWD1643GE
-   Volvo Penta TWD1652GE
-   Volvo Penta TWD1653GE
-   Volvo Penta TWD1663GE

## Details

- **Price:** 915.02 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Controls
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 915.02 AUD | In stock |

## Images

- 21596642 Control Valve | Genuine Volvo Penta Part
- 21596642 Control Valve | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21596642-control-valve-genuine-volvo-penta)
> Updated: 2026-10-08