# 21400686 Bracket | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine support bracket used in the engine-mounted seawater-filter and raw-water pump assembly of Volvo Penta D4 and D6 marine diesel installations. The bracket locates the filter body at the correct height and angle and prevents hose and pump loads from stressing the filter connections.

## 🚤 Compatibility

-   **Engine Family:** D
-   **HP Range:** 210-435 HP

Full model list at the end of this description.

## ⚙️ Key Features

-   Engine-mounted seawater-filter support
-   Confirmed in the D6-280A-A seawater-pump and filter assembly
-   Used with seawater filter 3889148
-   Factory mounting-hole pattern and filter offset
-   Designed for raw-water exposure, vibration and marine corrosion
-   Maintains correct hose routing to the seawater pump
-   2 used per assembly

## 🔌 Function

The bracket supports and positions the seawater filter so incoming raw water reaches the pump without hose strain, air leakage or filter movement.

## ⚠️ Common Signs of Failure

-   Filter housing moving or vibrating
-   Loose mounting fasteners
-   Raw-water hose misalignment
-   Air entering the seawater-pump suction
-   Repeated filter-cover or hose leakage

## 🛠️ Service Notes

-   Offer the bracket up and start every fastener by hand before tightening any of them, so the component is not pulled into a strained position
-   Check the mating faces are clean, flat and free of corrosion scale — a bracket that does not sit flat will work loose and let the component move
-   Renew self-locking nuts, lock washers, tab washers or thread-locking compound wherever the original assembly used them, and tighten to the figure given in the workshop manual for your engine
-   Where the bracket carries a rubber mount or bush, renew that at the same time rather than reusing a perished one
-   On brackets in the inlet and exhaust area, never force alignment to make the holes line up — cure the misalignment at its source, or the bracket and the component it holds will both crack

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   3889148 - Complete seawater filter
-   3583342 - Strainer housing
-   3583341 - Strainer element
-   3583340 - Sealing ring
-   3583339 - Pressure plate
-   21400685 - Related service kit
-   21400696 - Filter cover
-   3583853 - Spacer sleeves
-   994722 - Spacer sleeves
-   21457174 - Handle
-   942001 - Hex socket screw
-   963105 - Lock nut
-   21368510 - Companion bracket
-   21380890 - Seawater pump
-   943370 - Related hoses
-   1140670 - Related hoses
-   3888924 - Related hoses
-   961671 - Hose clamps
-   961672 - Hose clamps
-   943479 - Hose clamps

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D6-370A-C, D6-350A-A, D6-350A-B, D6-330A-D, D6-370D-B, D6-330D-B, D6-370D-A, D6-330D-C, D6-330A-C, D6-370D-C, D6-330D-D, D6-370D-D, D6-370A-D, D6-310D-B, D6-310D-D, D6-310D-C, D6-310A-B, D6-280A-C, D6-310A-A, D6-280A-D, D6-280A-A, D6-280A-B, D6-435D-A, D6-435D-D, D6-435D-C, D6-330A-B, D6-370A-B
-   Volvo Penta D4-260A-B, D4-260A-A, D4-260A-C, D4-260A-D, D4-260D-B, D4-260D-C, D4-260D-D, D4-300A-A, D4-300A-C, D4-300A-D, D4-300D-A, D4-300D-C, D4-300D-D, D4-210A-A, D4-210A-B, D4-225A-B, D4-225A-C, D4-225A-D, D4-225I-B

## Details

- **Price:** 110.85 AUD
- **Vendor:** Volvo Penta
- **Type:** Brackets & Mounts
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 110.85 AUD | In stock |

## Images

- 21400686 Bracket | Genuine Volvo Penta Part
- 21400686 Bracket | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21400686-bracket-genuine-volvo-penta)
> Updated: 2026-09-19