# 21992456 Flange Connection | Genuine Volvo Penta Part

## 🔧 Product Description

Machined flange connection used in the Volvo Penta engine, transmission or drive assembly that specifies 21992456. Its bore, bolt pattern and sealing face are matched to the original mating component.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D16C-D MH

-   **Engine Family:** D

## ⚙️ Key Features

-   Machined sealing face and bolt pattern
-   Correct bore and alignment for the connected assembly
-   Designed for the specified gasket or O-ring
-   Maintains structural and fluid connection integrity
-   Exact mating component must be confirmed

## 🔌 Function

Joins two components through a rigid aligned interface while providing the required sealing surface and load transfer.

## ⚠️ Common Signs of Failure

-   Leakage at the flange face
-   Warping or corrosion of the sealing surface
-   Cracks around bolt holes
-   Loose or stretched fasteners
-   Misalignment of the connected pipe or housing

## 🛠️ Service Notes

-   Confirm the correct gasket or O-ring for this flange before fitting — it is ordered separately from the flange itself
-   Tighten the flange bolts evenly in sequence to keep the sealing face flat and avoid distortion
-   Note the earlier flange reference 863211 when sourcing parts on older D16C builds, to avoid ordering the wrong-generation flange

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   21992456 → Supersedes 3886372

### OEM / Related Numbers

-   3886372 earlier number superseded by this part
-   863211 - earlier flange-connection reference

## 📦 Condition

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

## Details

- **Price:** 567.67 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 567.67 AUD | In stock |

## Images

- 21992456 Flange Connection | Genuine Volvo Penta Part
- 21992456 Flange Connection | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21992456-flange-connection-genuine-volvo-penta)
> Updated: 2026-10-08