# 20797270 Flange Screw | Genuine Volvo Penta Part

## 🔧 Product Description

OEM fastening or load-distribution component used in the tad550ge lubricating-oil pump and oil-filter assembly. It restores the specified thread, strength, length and clamping geometry required by the original Volvo Penta assembly.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD560VE
-   Volvo Penta TAD561VE
-   Volvo Penta TAD734GE
-   Volvo Penta TAD752GE
-   Volvo Penta TAD753GE
-   Volvo Penta TAD754GE
-   Volvo Penta TAD765VE
-   Volvo Penta TAD764VE
-   Volvo Penta TAD763VE
-   Volvo Penta TAD762VE
-   Volvo Penta TAD761VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 220 HP
-   **Year Range:** Approximately 2000s-2010s

## ⚙️ Key Features

-   Flange screw for the lubricating-oil pump and oil-filter mountings
-   Flange head
-   0.029 kg
-   13 applications across TAD-series engines
-   Quantity varies by assembly, most commonly three

## 🔌 Function

Clamps the oil pump or filter head to the block, holding the oil joint tight against pump pressure.

## ⚠️ Common Signs of Failure

-   Oil weeping from the pump or filter-head joint
-   Oil pressure lower than usual as the joint leaks internally
-   Screw found loose on inspection
-   Flange face fretted where it has been moving
-   Thread pulled in the housing

## 🛠️ Service Notes

-   The integral flange spreads the load and forms the bearing face, so do not add a separate washer unless the workshop manual for your engine specifically calls for one
-   Clean the threads and the seating face before fitting — grit, paint or old sealant under the flange gives a false torque reading and the joint will slacken off in service
-   Where the flange is serrated it must bear directly on clean metal to grip; discard any screw with a deformed flange or damaged serrations rather than reusing it
-   Tighten to the torque and sequence given in the workshop manual for your engine, and treat the screw as single-use where the manual specifies an angle-tightened or stretch fastener
-   Check the thread in the receiving component at the same time; a pulled or corroded thread will not hold a new screw however carefully it is torqued

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21595090 oil-pump housing
-   21486081 lip seal
-   20451738 hex-socket sunk screw
-   20742661 gasket
-   20405603 spring pin
-   20405635 suction pipe
-   20405888 gasket
-   20512299 and 984733 retaining screws
-   21640514 oil filter

## 📦 Condition

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

## Details

- **Price:** 3.12 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3.12 AUD | In stock |

## Images

- 20797270 Flange Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20797270-flange-screw-genuine-volvo-penta)
> Updated: 2026-10-21