# 11700432 Fitting Nut | Genuine Volvo Penta Part

## 🔧 Product Description

A genuine Volvo Penta injector nozzle retaining nut for injector assemblies 20451317 and 3803652. The precision threaded nut clamps the nozzle, intermediate disc, spring and shim stack together inside the nozzle-holder body. The nut is supplied individually; nozzle 20405851, spacer 11700430, spring 20405523, adjusting shim and retaining screw 20405525 are separate components.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD720VE
-   Volvo Penta TAD520VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 160-237 HP
-   **Year Range:** Approximately early 2000s

## ⚙️ Key Features

-   OEM Volvo Penta part number 11700432
-   System group: Fuel System
-   Net weight 0.0068 kg
-   Supersedes previous part number 20405530
-   Fits TAD520VE and TAD720VE series diesel engines
-   Engine type: Volvo Penta mechanical direct-injection industrial diesel

## 🔌 Function

The fitting nut clamps a fuel line or fitting against its mating connection point, holding the joint tight and sealed. Correct torque on this nut is what maintains a leak-free fuel path.

## ⚠️ Common Signs of Failure

-   Fuel weeping or seepage around the connection point
-   Loose or backed-off nut allowing air to be drawn into the fuel system
-   Rounded, damaged or stripped threads preventing correct torque
-   Corrosion or galling that makes the nut difficult to remove or refit
-   Hard starting or rough running caused by an air leak at the joint

## 🛠️ Service Notes

-   Use a tool that grips all the flats — a flare or union nut is easily rounded off, and a rounded nut can neither be sealed nor removed cleanly
-   Clean the threads and sealing faces, and fit a new sealing washer or ring where one is used
-   Start the nut by hand and confirm it runs on straight before tightening, so the pipe or fitting beneath it is not cross-threaded or pulled out of line
-   Tighten to the figure in the workshop manual for your engine; over-tightening distorts the flare or the seat and makes a joint leak rather than sealing it
-   Support the fitting with a second spanner while tightening, and check the joint for weeping once the system has been pressurised and run

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   11700432 → Supersedes 20405530

### OEM / Related Numbers

-   20405530 earlier number superseded by this part
-   Volvo 243489
-   Volvo / Cummins 3905155
-   Fiat / Iveco 75207882
-   142940 related reference

### Other-Brand OEM Numbers

-   VOE11700432
-   Bosch 2 433 314 182
-   Deutz 01318365
-   Deutz 1318365
-   Cummins: 3905155

### Aftermarket / Verified Equivalents

-   SPACO 11250

## 📦 Condition

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

## Details

- **Price:** 77.63 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 77.63 AUD | In stock |

## Images

- 11700432 Fitting Nut | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/11700432-fitting-nut-genuine-volvo-penta)
> Updated: 2026-10-11