# 812834A2 Mercury MerCruiser Exhaust Megaphone | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Exhaust Extension / Megaphone Kit - Part Number: 812834A2

  

A genuine Quicksilver exhaust extension kit used in Mercury V6 outboard driveshaft housing and exhaust tube assemblies. This exhaust megaphone / extension forms part of the midsection exhaust path, helping route exhaust gases correctly through the driveshaft housing and lower unit.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM exhaust extension kit

• Correct Mercury part number 812834A2

• Used in selected Mercury and Mariner V6 outboard midsection exhaust systems

• Fits driveshaft housing and exhaust tube assemblies where 812834A2 is specified

• Helps maintain correct exhaust flow, exhaust tone and midsection exhaust sealing

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 812834A2 → Supersedes 8128341

• 812834A2 current OEM service reference

• 8128341 earlier OEM reference

  

OEM / Related Numbers:

  

• 812834A2

• 812834 A2

• 812834

• 8128341

• 812834 1

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury and Mariner V6 outboard driveshaft housing / exhaust tube applications

  

Typically suits:

  

• Engine models:

• Mercury 150HP, serial 0G610050 to 0G856999

• Mercury 150HP, serial 0G960500 to 1B226999

• Mercury 150HP EFI, serial 0T409000 to 0T800999

• Mercury V-150 DFI 2.5L, serial 0T178500 to 0T800999

• Mercury V-150 EFI 2.5L, serial 1B227000 and up

• Mercury 175HP DFI, serial 1B227000 to 1B417701

• Mercury 175HP DFI, serial 1B417702 and up

• Mercury 175HP EFI, serial 0T409000 to 0T800999

• Mercury V-175 DFI 2.5L, serial 1B227000 to 1B417701

• Mercury XR6, serial 0G760300 to 0G960499

• Mercury XR6, serial 0G960500 to 1B226999

• Mercury / Mariner Racing 150 EFI Pro Max / Super Mag, serial 0G610050 to 0G856999

• Mercury / Mariner Racing 200 EFI Pro Max / Super Mag, serial 0G610050 to 0G856999

• Mercury 105 Jet, serial 0G303046 to 0G760299

• Mercury 140 Jet, serial 0G760300 to 0G960499

• Mercury 140 Jet, serial 0G960500 to 0T178499

  

• HP Range: commonly used across 105 Jet, 135HP, 150HP, 175HP and 200HP V6 outboard applications

• Engine Type: Mercury / Mariner 2-stroke V6 outboard

• System Type: Driveshaft housing exhaust extension / midsection exhaust tube assembly

  

🔌 Function

  

The exhaust extension / megaphone helps direct exhaust gases through the outboard midsection and into the lower exhaust outlet path while maintaining correct fitment inside the driveshaft housing.

  

Common signs of failure:

  

• Exhaust leakage from the midsection

• Loose, cracked or damaged exhaust extension

• Increased exhaust noise from the driveshaft housing area

• Corrosion or heat damage around the exhaust tube assembly

• Poor exhaust sealing after midsection or driveshaft housing service

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 322.5 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 322.50 AUD | In stock |

## Images

- 812834A2 Mercury MerCruiser Exhaust Megaphone | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/812834a2-mercury-mercruiser-exhaust-megaphone-genuine-quicksilver-oem-part)
> Updated: 2026-05-17