# 8M0113734 Mercury MerCruiser Water Pump Assembly | Genuine Quicksilver OEM Part

## 🔧 Product Description

**Genuine Quicksilver Circulation Water Pump Assembly - Part Number: 46-8M0113734**

A genuine Quicksilver engine circulation water pump assembly for MerCruiser small-block GM V6 and V8 petrol engines. This pump circulates cooling water through the engine block and cylinder heads and is used on selected 4.3L, 5.0L, 5.7L and 6.2L MerCruiser applications where the cooling-system diagram specifies 46-8M0113734.

## ⚙️ Key Features

-   Genuine Quicksilver OEM water pump assembly
-   Correct Mercury part number 46-8M0113734
-   Engine circulation pump for small-block GM V6 / V8 MerCruiser engines
-   Direct-fit replacement where specified by serial-numbered cooling diagram
-   Helps maintain correct cooling-water circulation through the engine

## 🚤 Compatibility

### Commonly used on

-   MerCruiser GM small-block V6 and V8 circulation cooling systems
-   MerCruiser 4.3L V6 petrol engines where 46-8M0113734 is specified
-   MerCruiser 5.0L, 5.7L and 6.2L V8 petrol engines where 46-8M0113734 is specified

### Typically suits

-   Engine models:
-   MerCruiser 4.3L petrol engine circulation pump applications where 46-8M0113734 is specified
-   MerCruiser 4.3L MPI engine applications where 46-8M0113734 is specified
-   MerCruiser 5.0L petrol engine circulation pump applications where 46-8M0113734 is specified
-   MerCruiser 5.0L MPI Alpha / Bravo applications where 46-8M0113734 is specified
-   MerCruiser 5.7L petrol engine circulation pump applications where 46-8M0113734 is specified
-   MerCruiser 5.7L MPI MIE applications where 46-8M0113734 is specified
-   MerCruiser 5.7L MPI Horizon MIE applications where 46-8M0113734 is specified
-   MerCruiser 350 MAG MPI applications where 46-8M0113734 is specified
-   MerCruiser 350 MAG MPI Horizon applications where 46-8M0113734 is specified
-   MerCruiser MX 6.2L MPI Bravo applications where 46-8M0113734 is specified
-   MerCruiser MX 6.2L MPI Horizon Bravo applications where 46-8M0113734 is specified
-   MerCruiser 6.2L MPI MIE applications where 46-8M0113734 is specified
-   MerCruiser 6.2L MPI Horizon MIE applications where 46-8M0113734 is specified
-   MerCruiser Black Scorpion and Scorpion small-block V8 applications where 46-8M0113734 is specified
-   Engine Type: MerCruiser GM small-block V6 and V8 petrol engine
-   Engine Range: commonly 4.3L, 5.0L, 5.7L and 6.2L where specified
-   System Type: Engine circulation water pump assembly

## 🔌 Function

The circulation pump moves cooling water through the engine block and cylinder heads. It works with the raw-water pump, thermostat and hoses to maintain stable engine operating temperature.

## ⚠️ Common Signs of Failure

-   Engine overheating
-   Coolant or raw water leaking from pump weep hole
-   Bearing noise or pulley wobble
-   Rust or corrosion around pump body
-   Poor circulation despite raw-water pump service
-   Replacement required during cooling-system rebuild

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   46-8M0113734 current OEM water pump assembly reference

### OEM / Related Numbers

-   46-8M0113734
-   8M0113734
-   468M0113734
-   MerCruiser circulation pump
-   Small-block V6 / V8 water pump assembly
-   8M0180871 related sea water pump wear plate in separate raw-water pump family
-   47-8M0104229 related impeller kit in separate raw-water pump family
-   Cooling circulation pump reference for GM small-block MerCruiser applications

### Aftermarket / Verified Equivalents

-   Aftermarket circulation pump replacements exist for 46-8M0113734 applications, but final match must be made by engine serial number and pump configuration

## 📦 Condition

-   Genuine Quicksilver part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 340.05 AUD
- **Vendor:** Quicksilver
- **Type:** Pumps
- **Tags:** Quicksilver Marine Parts | Oils, Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 340.05 AUD | In stock |

## Images

- 8M0113734 Mercury MerCruiser Water Pump Assembly | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8m0113734-mercury-mercruiser-water-pump-assembly-genuine-quicksilver-oem-part)
> Updated: 2026-09-06