# 21277185 Bellows | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta XDP / XDP-B U-Joint Bellows Service Kit - Part Number: 21277185

  

Genuine Volvo Penta U-joint bellows service kit for XDP and XDP-B sterndrives. The flexible bellows seals the universal-joint cavity between the transom assembly and drive while allowing steering and trim movement. It replaces earlier bellows references 3886847, 3841482 and 3860419.

  

⚙️ Key Features

  

• Genuine Volvo Penta XDP bellows service kit

• Confirmed XDP and XDP-B sterndrive application

• Supersedes three earlier bellows references

• Flexible marine-grade rubber construction

• Inspect U-joints, sealing lands and clamp grooves during replacement

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21277185 → Supersedes 3886847

• 3886847 → Supersedes 3841482

• 3841482 / 3860419 (earlier bellows references)

  

OEM / Related Numbers:

  

• 21277185 - current OEM reference

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

Kit Contents:

  

• U-joint bellows assembly: 21277185

• Retaining clamps: supplied under service-kit reference 21277185; separate Volvo service numbers are not published in the available kit breakdown

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta XDP and XDP-B sterndrive transom assemblies

  

Typically suits:

  

• Engine models:

• XDP

• XDP-B

  

• Serial / Specification Control: Drive model, transom-shield revision and serial number control fitment.

• HP Range: Drive-controlled fitment

• Engine Type: Volvo Penta petrol marine engine with XDP/XDP-B sterndrive

• Year Range: XDP/XDP-B production; drive-serial controlled

  

🔌 Function

  

Prevents seawater from entering the U-joint and input-shaft cavity while allowing drive trim and steering movement.

  

Common signs of failure:

  

• Cracking, checking or hardening of the rubber

• Water entry into the bellows or U-joint cavity

• Loose, corroded or displaced retaining clamps

• Grease washout, corrosion or noise from the U-joint

• Bellows age or service history exceeding the recommended inspection interval

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 201.3 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 201.30 AUD | In stock |

## Images

- 21277185 Bellows | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21277185-bellows-genuine-volvo-penta)
> Updated: 2026-08-17