# 21588215 Control Valve | Genuine Volvo Penta Part

## 🔧 Product Description

Electro-hydraulic transmission control valve for the listed Volvo Penta D9 reversing-gear installations. The valve directs operating pressure to the selected clutch circuit so forward, neutral and reverse commands are applied correctly.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D13C1-A MP
-   Volvo Penta D13B-B MP
-   Volvo Penta D11A-A
-   Volvo Penta D11A-B
-   Volvo Penta D11A-C
-   Volvo Penta D11A-E
-   Volvo Penta D11A-D MP
-   Volvo Penta D9A2J
-   Volvo Penta D9A2G
-   Volvo Penta D9A2L MH
-   Volvo Penta D9A2D
-   Volvo Penta D9A2B
-   Volvo Penta D9A2F
-   Volvo Penta D9A2K
-   Volvo Penta D9A2H
-   Volvo Penta D9A2M MP
-   Volvo Penta D9A2A
-   Volvo Penta D9A2C
-   Volvo Penta D9A2E

-   **Engine Family:** D
-   **HP Range:** Approximately 425-575 HP

## ⚙️ Key Features

-   Genuine Volvo Penta transmission control valve
-   Factory flow and pressure calibration
-   Designed for the D9A2A/D9A2B reversing-gear control system
-   Works with the original solenoids and transmission harness
-   Requires clean oil and correct system pressure for reliable operation
-   Engine type: Volvo Penta D9/D11 diesel marine propulsion with hydraulic reversing gear

## 🔌 Function

Routes regulated transmission oil pressure to the commanded clutch pack, enabling controlled engagement of forward and reverse.

## ⚠️ Common Signs of Failure

-   Delayed or failed forward/reverse engagement
-   Harsh, erratic or slipping shifts
-   Transmission pressure alarms
-   Gear remains engaged or will not engage
-   Contamination, internal leakage or sticking valve spool

## 🛠️ 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 / Related Numbers

-   3843679 reversing gear
-   3843680 reversing gear
-   3843681 reversing gear
-   3843685 control solenoid
-   3589000 control solenoid
-   3594238 transmission wiring harness

## 📦 Condition

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

## Details

- **Price:** 3684.49 AUD
- **Vendor:** Volvo Penta
- **Type:** Transmission & Gearbox
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3684.49 AUD | In stock |

## Images

- 21588215 Control Valve | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21588215-control-valve-genuine-volvo-penta)
> Updated: 2026-09-06