# 20801089 Hollow Screw | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Oil-System Hollow Screw - Part Number: 20801089

  

Application-specific Oil-System Hollow Screw used in the engine lubricating and oil-drain pump assembly on the listed Volvo Penta engines. Provides a drilled banjo-style fluid connection that secures the fitting while allowing oil, fuel or coolant to pass through its internal port.

  

⚙️ Key Features

  

• Genuine Volvo Penta Oil-System Hollow Screw

• Direct service replacement for part number 20801089

• Designed for the engine lubricating and oil-drain pump assembly

• Provides a drilled banjo-style fluid connection that secures the fitting while allowing oil, fuel or coolant to pass through its internal port

• Catalogued for D5A-B TA; TAD520VE

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20801089 (Volvo Penta OEM reference)

  

OEM / Related Numbers:

  

• VOE20801089 - Volvo Construction Equipment prefixed number format

• 3827475 - oil drain pump

• 20798507 - oil-drain hose

• 20551704 - nipple

• 3838616 - attaching clamp

• 3838605 - support bracket

• 888723 - spacer sleeve

• 20801215 - O-ring

• 20801234 - spacer

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5A/TAD520 lubricating-system installations

  

Typically suits:

  

• Engine models:

• D5A-B TA

• TAD520VE

  

• HP Range: Approximately 150HP - 180HP

• Engine Type: 4.8-litre four-cylinder turbocharged industrial diesel

• Year Range: Approximately 1999 - 2007

  

🔌 Function

  

Provides a drilled banjo-style fluid connection that secures the fitting while allowing oil, fuel or coolant to pass through its internal port.

  

Common signs of failure:

  

• Fuel, oil, coolant, boost-air or vapour leakage at the joints or pipe wall

• Cracks, fretting or fatigue around bends, clamps and brazed fittings

• Internal restriction from corrosion, carbon, sludge or contamination

• Chafing, vibration marks or contact with adjacent components

• Pressure, temperature, fuelling or ventilation faults caused by reduced flow

  

Service / Installation Notes:

  

• Renew all disturbed sealing washers, O-rings, grommets and clamps.

• Confirm the line is naturally aligned before tightening; do not pull it into position with the fasteners.

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 56.9 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 56.90 AUD | In stock |

## Images

- 20801089 Hollow Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20801089-hollow-screw-genuine-volvo-penta)
> Updated: 2026-08-01