# 2241622 Mercury MerCruiser 416223 Plug - Pipe | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver 3/4-14 NPT Cast Iron Pipe Plug - Part Number: 22-416223

  

A genuine Quicksilver threaded pipe plug for selected Mercury, Mariner and MerCruiser engine cooling and exhaust castings.

  

The 3/4-14 NPT plug closes a threaded drain, inspection or casting passage in the applicable cylinder block, exhaust manifold or thermostat-housing assembly. Its cast-iron construction matches the original factory component used in the specified marine-engine systems.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM pipe plug

• Correct Mercury part number 22-416223

• 3/4-14 NPT tapered pipe thread

• Cast-iron construction

• Cross-references with Sierra, GLM, Mallory, Crusader, Osco and Recmar plugs

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 22-416223 → Supersedes 22-416222

• 22-416222 → Supersedes 22-41622

• 22-41622 → Supersedes 22-33198A1

• 22-33198A1 → Supersedes 22-33198

• 22-33198 → Supersedes 22-46754

• 22-46754 earlier OEM pipe-plug reference

  

OEM / Related Numbers:

  

• 22-416223

• 416223

• 22416223

• 22-416222

• 22-41622

• 41622

• 22-33198A1

• 22-33198

• 33198

• 22-46754

• 46754

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-4258

• GLM: 21892

• Mallory: 9-41205

• Crusader: 113186

• Osco: 1016012

• Recmar: REC22-41622

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser engine-block, thermostat-housing and exhaust-manifold threaded passages

• Mercury and Mariner four-stroke cylinder-block cooling passages where the 3/4-14 plug is specified

  

Typically suits:

  

• Engine models:

• MerCruiser 120 / 140 GM 153 and 181 CID inline 4-cylinder

• MerCruiser 3.0L and 3.0LX GM 181 CID inline 4-cylinder

• MerCruiser 470 / 485 224 CID inline 4-cylinder

• MerCruiser 4.3L and 4.3LX GM V6

• MerCruiser 262 MAG GM V6

• MerCruiser 898 GM 305 V8

• MerCruiser 5.0L / 230 GM 305 V8

• MerCruiser 5.7L / 260 GM 350 V8

• MerCruiser GM V6 and V8 thermostat housings using the 41622-series plug

• Mercury / Mariner 40HP carburetted four-stroke 4-cylinder

• Mercury / Mariner 40HP EFI four-stroke 4-cylinder

• Mercury / Mariner 50HP EFI four-stroke

• Mercury / Mariner 60HP EFI four-stroke

  

• Engine Type: MerCruiser petrol inboard / sterndrive and Mercury / Mariner four-stroke outboard

• Thread Size: 3/4-14 NPT

• Year Range: Approximately 1960s onward, dependent on engine casting and serial number

  

🔌 Function

  

The plug seals a threaded casting passage while allowing the passage to be opened for draining, cleaning or engine servicing.

  

Common signs of failure:

  

• Cooling water or coolant leaking around the threads

• Heavy rust or corrosion on the plug

• Damaged square drive or rounded removal surface

• Stripped or cross-threaded plug

• Freeze damage caused by an obstructed drain passage

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 5.45 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.45 AUD | In stock |

## Images

- 2241622 Mercury MerCruiser 416223 Plug - Pipe | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/2241622-mercury-mercruiser-416223-plug-pipe-genuine-quicksilver-oem-part)
> Updated: 2026-07-31