# 3851921 Oil Cooler | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta oil cooler listed under the Steering group, weighing 0.592 kg and covering 111 applications on DPX drive installations. It is a compact raw water cooled shell-and-tube unit for the power steering circuit. It supersedes part number 3852840.

## 🚤 Compatibility

-   **Engine Family:** DPX

Full model list at the end of this description.

## ⚙️ Key Features

-   Listed in the Steering group
-   0.592 kg
-   Compact raw water cooled shell-and-tube design
-   Supersedes 3852840
-   111 applications, DPX

## 🔌 Function

Sheds heat from the hydraulic oil so the steering system keeps its pressure and the oil keeps its viscosity.

## ⚠️ Common Signs of Failure

-   Steering going heavy or vague when hot
-   Oil weeping from the cooler body or its unions
-   Discoloured or burnt-smelling hydraulic oil
-   Fins clogged, corroded or crushed
-   Internal leak putting oil into the water side or water into the oil

## 🛠️ Service Notes

-   Because this cooler sits in the Steering group rather than a lubrication group, confirm you are ordering for the steering circuit and not the engine or transmission oil circuit
-   Flush the steering circuit and renew the oil if the old cooler was internally corroded
-   Fit new seals or O-rings at the unions rather than reusing the originals

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3851921 → Supersedes 3852840

### OEM / Related Numbers

-   3852840 earlier number superseded by this part

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 8.1GSi-A, 5.8FiPNCACE, 5.8FiPNCMCE, 5.8FiPNCBCE, 5.8FIPNCSCE, 5.8FLPNCA, 5.8FLPNCM, 5.8FLPNCB, 5.8FLPNCS, 5.8FSiPNCACE, 5.8FSiPNCD, 5.8FSiPNCS, 7.4GiPEFS, 7.4GiPBYCCE, 7.4GiPLKDCE, 7.4GiPLKECE, 7.4GiPNCACE, 7.4GiPNCSCE, 7.4GiPNCBCE, 7.4GiPNCMCE, 7.4GiPWTR, 7.4GLPLKD, 7.4GLPLKE, 7.4GLPNCA, 7.4GLPNCB, 7.4GLPNCM, 7.4GLPNCS, 7.4GSiPBYCCE, 7.4GSiPEFS, 7.4GSiPWTR, 7.4GSiXNCB, 7.4GSiXNCM, 5.7GSiPWTR, 5.7GSiCPLKD, 5.7GSiPBYCCE, 5.7GSiPEFS, 5.7GSiPLKD, 5.7GSiPLKE, 5.7GSPBYC, 5.7GSPEFS, 5.7GSPWTR, 5.7GXi-A, 5.7GLPNCS, 5.7GiPLKDCE, 5.7GiPLKECE, 5.7GiPNCACE, 5.7GiPNCSCE, 5.7GiPNCBCE, 5.7GIPNCMCE, 5.7GLiPLKDCE, 5.7GSPLKD, 5.7GSPLKE, 5.7GLPLKR, 5.7GLPLKA, 5.7GLPLKD, 5.7GLPLKE, 5.0FiPNCBCE, 5.0FLPNCS, 5.0FLPNCB, 5.0GiPBYCCE, 5.0GiPEFS, 5.0GiPWTR, 5.0FiPNCSCE, 5.0GLPBYC, 5.0GLPEFS, 5.0GLPWTR, 4.3GIPBYCCE, 4.3GIPEFS, 4.3GIPLKDCE, 4.3GIPLKECE, 4.3GIPNCACE, 4.3GIPNCMCE, 4.3GIPNCSCE, 4.3GIPNCBCE, 4.3GIPWTRCE, 4.3GLPBYC, 4.3GLPEFS, 4.3GLPLKD, 4.3GLPLKE, 4.3GLPNCA, 4.3GLPNCS, 4.3GLPNCB, 4.3GLPWTR, 4.3GSPBYC, 4.3GSPLKD, 4.3GSPLKE, 4.3GSPNCA, 4.3GSPNCM, 4.3GSPNCS, 4.3GSPNCB, 4.3GSPWTR, 3.0GSPBYMCE, 3.0GSPLKD, 3.0GSPNCS, 3.0GSPWTR, 8.2GLPMDA, 8.2GLPMDM, 8.2GSiPBYCCE, 8.2GSiPEFS, 8.2GSiPWTR, 8.2GSiXNCB, 5.8FSIINCC, 5.8FSIINCS
-   Volvo Penta DPX385XBYDCE, DPX385XEFS, DPX385XLKE
-   Volvo Penta DPX415XEFS, DPX415XLKE, DPX415XBYDCE
-   Volvo Penta DPX375-A
-   Volvo Penta DPX420-A

## Details

- **Price:** 528.28 AUD
- **Vendor:** Volvo Penta
- **Type:** Oil & Lubrication
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 528.28 AUD | In stock |

## Images

- 3851921 Oil Cooler | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3851921-oil-cooler-genuine-volvo-penta)
> Updated: 2026-08-31