# 11031743 Nipple | Genuine Volvo Penta Part

## 🔧 Product Description

This is a genuine Volvo Penta cooling system nipple, a threaded connector fitting used at a coolant port or hose junction within the engine's cooling circuit. It serves as the take-off point that allows a coolant line or sensor connection to be joined to the engine or heat exchanger without leakage. It supersedes two earlier part numbers and is the current replacement for a broad span of Volvo Penta inline-six and V-type marine and industrial diesel engines.

## 🚤 Compatibility

-   **Engine Family:** TD, TAMD, TWD, TID
-   **Year Range:** Approximately 1980s - 2000s

Full model list at the end of this description.

## ⚙️ Key Features

-   OEM Volvo Penta part number 11031743
-   System group: Cooling System
-   Net weight: 0.054 kg
-   Supersedes previous part numbers 11033336 and 4804282
-   Fits TD, TID, TWD, TAMD 60/70/100/120/160-series marine and industrial diesel engines
-   Engine type: Volvo inline 6-cylinder marine-commercial / industrial diesel

## 🔌 Function

The nipple provides a sealed threaded connection point in the engine cooling circuit so coolant hoses or lines can be attached to the engine, expansion tank or heat exchanger. It maintains a pressure-tight joint while allowing coolant to pass between components.

## ⚠️ Common Signs of Failure

-   Coolant seepage or drips at the fitting when the system is under pressure
-   Corroded or pitted threads preventing a proper seal
-   Cracked or deformed body after over-tightening or impact
-   Repeated loss of coolant and low expansion tank level with no other visible leak
-   Hose will not seat securely or blows off under operating pressure

## 🛠️ Service Notes

-   Check the bore is clear before fitting — a nipple is often the feed point or restriction for a circuit, and debris left in it will starve whatever it supplies
-   On tapered threads use the paste or liquid sealant specified for the fluid concerned, applied a few threads back from the open end; avoid thread tape on fuel and oil lines, where a shed shred travels downstream into filters, pumps and injectors
-   Where the nipple seals on a face or against a washer rather than on its thread, fit a new sealing washer instead of curing a weep by overtightening
-   Tighten to the figure in the workshop manual for your engine — these are small fittings in castings and are easily stripped, or the surrounding boss cracked
-   Support the pipe or hose so it meets the nipple square and without side load, then check the joint at working pressure and temperature

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   11031743 → Supersedes 11033336

### OEM / Related Numbers

-   4804282 earlier number superseded by this part
-   11033336 earlier number superseded by this part
-   837185 related thermostat housing
-   3831424 related thermostat kit
-   3831425 related thermostat kit

### Aftermarket / Verified Equivalents

-   SLP: NI-743

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
-   Volvo Penta TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
-   Volvo Penta TAMD122P-A, TAMD122P-B, TAMD122P-C
-   Volvo Penta TAMD102A, TAMD102D
-   Volvo Penta TAMD63L-A, TAMD63P-A
-   Volvo Penta TAMD73P-A, TAMD73WJ-A
-   Volvo Penta TD61A, TD61AW
-   Volvo Penta TD71A, TD71AW
-   Volvo Penta TWD1230ME, TWD1230VE
-   Volvo Penta TAMD103A
-   Volvo Penta TAMD75P-A
-   Volvo Penta TD1030VE
-   Volvo Penta TD121G-87
-   Volvo Penta TD610M
-   Volvo Penta TD630ME
-   Volvo Penta TD730ME
-   Volvo Penta TID71A
-   Volvo Penta TWD1030ME
-   Volvo Penta TWD1031VE
-   Volvo Penta TWD1231VE
-   Volvo Penta TWD630ME
-   Volvo Penta TWD730ME

## Details

- **Price:** 69.78 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta Parts | Genuine Marine Engine & Service Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 69.78 AUD | In stock |

## Images

- 11031743 Nipple | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/11031743-nipple-genuine-volvo-penta)
> Updated: 2026-09-21