# 21434108 Support Rubber | Genuine Volvo Penta Part

## 🔧 Product Description

A vibration-isolating rubber support used with bracket 21434106 in selected Volvo Penta V8 hydraulic steering installations.

## 🚤 Compatibility

-   **Engine Family:** V
-   **HP Range:** 200-430 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Genuine Volvo Penta rubber support
-   Isolates steering-pump vibration
-   Protects the bracket and adjoining hoses from fatigue
-   Correct factory hardness and dimensions
-   Resistant to engine-compartment heat and oil vapour
-   Engine type: V8 marine petrol

## 🔌 Function

Supports and cushions the steering-pump mounting assembly while reducing transmitted vibration.

## ⚠️ Common Signs of Failure

-   Perished or split rubber
-   Steering-pump vibration
-   Pulley or belt misalignment
-   Support compressed or oil-softened
-   Metal-to-metal contact at the bracket

## 🛠️ Service Notes

-   Fit the rubber clean and dry and keep oil, fuel and solvents off it; petroleum products swell and soften rubber and shorten the life of the mounting
-   Renew the whole set together — one new rubber alongside sagged old ones throws the load and the alignment out
-   Let the unit settle onto the rubbers before final tightening and tighten to the figure in the workshop manual for your engine; crushing a support rubber down hard destroys the isolation it exists to provide
-   Check alignment and clearance after fitting and confirm that nothing which was free to move before is now touching a fixed surface
-   Inspect at each service for splitting, perishing, separation from the metal and permanent sag, and replace on condition rather than waiting for a failure

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21434106 - power-steering bracket
-   3887373 - power-steering pump
-   3889611 - pulley
-   21452588 - hose assembly
-   21399019 - hydraulic oil cooler

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta V8-270-C-B, V8-270-CE-B, V8-300-A, V8-300-E-A, V8-300-B, V8-300-E-B, V8-300-C-A, V8-300-CE-A, V8-300-C-B, V8-320-C-B, V8-320-CE-B, V8-300-CE-B, V8-320-A, V8-320-E-A, V8-320-B, V8-320-E-B, V8-320-C-A, V8-320-CE-A, V8-380-CE-A, V8-380-C-B, V8-380-CE-B, V8-380-C-D, V8-380-CE-D, V8-430-CE-D, V8-350-C-D, V8-350-CE-D, V8-380-C-A, V8-225-C-A, V8-225-CE-A, V8-225-C-B, V8-225-CE-B, V8-270-A, V8-270-E-A, V8-270-B, V8-270-E-B, V8-270-C-A, V8-270-CE-A
-   Volvo Penta 5.7GXi-320-R, 5.7GXiE-320-R, 5.7GXiC-320-R, 5.7GXiCE-320-R, 5.7GXiC-P, 5.7GXiCE-P, 5.7GXiE-P, 5.7GXi-P, 5.7GiE-300-P, 5.7Gi-300-P, 5.7Gi-300-R, 5.7GiE-300-R, 5.7GiC-300-P, 5.7GiCE-300-P, 5.7GiC-300-R, 5.7GiCE-300-R, 5.0GiC-225-S, 5.0GiCE-225-S, 5.0GXiC-P, 5.0GXiCE-P, 5.0GXi-270-R, 5.0GXiE-270-R, 5.0GXiC-270-R, 5.0GXiCE-270-R, 5.0GXiE-P, 5.0GXi-P, 4.3Gi-200-R, 4.3GL-P, 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXi-P, 4.3GXiE-P, 4.3GXi-Q, 4.3GXiE-Q
-   Volvo Penta V6-200-A, V6-225-A, V6-225-E-A

## Details

- **Price:** 5.31 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.31 AUD | In stock |

## Images

- 21434108 Support Rubber | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21434108-support-rubber-genuine-volvo-penta)
> Updated: 2026-08-22