# 21503251 Hydraulic Hose | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D4/D6 Power-Steering Hydraulic Hose - Part Number: 21503251

  

A formed hydraulic hose used in a selected Volvo Penta D4 or D6 power-steering circuit. It is separately routed from jackshaft hose 21503249 and must be matched by the steering-system diagram.

  

⚙️ Key Features

  

• Genuine Volvo Penta hydraulic steering hose

• Factory-crimped pressure fittings

• Correct application-specific length and orientation

• Resistant to hydraulic fluid, heat and vibration

• Not interchangeable with adjacent hose references without diagram confirmation

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21503251 (current catalogued reference)

  

OEM / Related Numbers:

  

• 21503249 - related jackshaft hydraulic hose

• 3808486 - related hydraulic hose

• 3863190 - steering-fluid reservoir

• 21474337 and 21474338 - steering pump and mounting references

  

Aftermarket / Verified Equivalents:

  

• No direct formed aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D4 and D6 hydraulic power-steering systems specifically listing hose 21503251

  

Typically suits:

  

• Engine models:

• D4 and D6 Aquamatic or jackshaft packages using the matching steering-hose arrangement

  

• HP Range: Engine-package dependent

• Engine Type: D4 or D6 turbocharged marine diesel

• Year Range: Steering-system and engine-serial dependent

  

🔌 Function

  

Transfers hydraulic fluid through its assigned section of the power-steering circuit.

  

Common signs of failure:

  

• Hydraulic-fluid leakage

• Steering assistance becomes weak or uneven

• Cracked or abraded hose

• Air repeatedly enters the system

• Damaged or corroded end fittings

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 447.05 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 447.05 AUD | In stock |

## Images

- 21503251 Hydraulic Hose | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21503251-hydraulic-hose-genuine-volvo-penta)
> Updated: 2026-09-06