# 34235T Mercury MerCruiser Breaker Assembly | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Breaker Point Assembly - Part Number: 34235T

  

A genuine Quicksilver breaker point assembly for selected MerCruiser GM 4-cylinder and 6-cylinder engines using Delco conventional ignition systems. This breaker assembly is used inside the distributor to switch the ignition coil circuit and produce spark at the correct timing interval.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM breaker point assembly

• Correct Mercury part number 34235T

• Used on selected GM 4-cylinder and 6-cylinder MerCruiser Delco ignition systems

• Direct replacement breaker contact set for conventional distributor systems

• Important tune-up component for older points-style ignition engines

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 34235T current OEM service reference

• 34235 earlier OEM breaker point reference

  

OEM / Related Numbers:

  

• 34235T

• 34235

• 34235A

• 34235T1

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-5301

• Mallory: 9-29301

  

🚤 Compatibility

  

Commonly used on:

  

• MerCruiser GM 4-cylinder and 6-cylinder engines with Delco conventional ignition distributors

  

Typically suits:

  

• Engine models:

• MerCruiser 120 2.5L GM 153 I/L4 conventional ignition applications

• MerCruiser 140 3.0L GM 181 I/L4 conventional ignition applications

• MerCruiser 165 GM 250 I/L6 conventional ignition applications

• MerCruiser 470 Mercury 224 I/L4 conventional ignition applications

• MerCruiser 470 2BBL Mercury 224 I/L4 - serial 4208730 to 5520114

• MerCruiser 485 / 488 Mercury 224 I/L4 conventional ignition applications

• MerCruiser 170 / 190 3.7L Mercury 224 I/L4 conventional ignition applications

• MerCruiser GM 4-cylinder and 6-cylinder Delco distributor assemblies where 34235T is specified

  

• Engine Type: MerCruiser GM-based 4-cylinder / 6-cylinder petrol engine

• Ignition Type: Delco conventional points ignition

• System Type: Distributor breaker point assembly

  

🔌 Function

  

The breaker assembly opens and closes the ignition coil primary circuit inside the distributor, allowing the coil to generate high-voltage spark for combustion.

  

Common signs of failure:

  

• Hard starting

• Weak or no spark

• Misfire at idle or under load

• Burnt, pitted or incorrectly gapped points

• Poor ignition timing stability

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 44.55 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 44.55 AUD | In stock |

## Images

- 34235T Mercury MerCruiser Breaker Assembly | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/34235t-mercury-mercruiser-breaker-assembly-genuine-quicksilver-oem-part)
> Updated: 2026-05-17