# 57828507Q4 Mercury MerCruiser Belt | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Serpentine Belt - Part Number: 57-828507Q4

  

Genuine Quicksilver/Mercury serpentine belt for selected Mercury and Mariner DFI outboard accessory drive systems. This OEM belt replaces earlier 828507-series references and is designed to maintain correct alternator and accessory drive operation on compatible DFI engines.

  

⚙️ Key Features

  

• Genuine Quicksilver/Mercury OEM serpentine belt

• Designed for selected Mercury / Mariner DFI outboard applications

• Direct replacement for earlier 57-828507-series belt references

• Helps maintain correct accessory drive operation

• Marine-grade belt designed for outboard engine operating conditions

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 57-828507Q4 → Supersedes 57-8285074

• 57-8285074 → Supersedes 57-8285072

• 57-8285072 earlier OEM reference

  

OEM / Related Numbers:

  

• 57-828507Q4

• 828507Q4

• 57828507Q4

• 57-8285074

• 8285074

• 57-8285072

• 8285072

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-18100

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner DFI outboard serpentine belt drive systems

• Selected 135HP, 150HP and 175HP DFI accessory drive applications

  

Typically suits:

  

• Engine models:

• Mercury 135HP DFI outboard, 1998 and newer application range

• Mercury 150HP DFI outboard, 1998 and newer application range

• Mercury 175HP DFI outboard, 2001 and newer application range

• Mercury / Mariner 135HP DFI 2.5L accessory drive applications using 57-828507Q4

• Mercury / Mariner 150HP DFI 2.5L accessory drive applications using 57-828507Q4

• Mercury / Mariner 175HP DFI 2.5L accessory drive applications using 57-828507Q4

• Mercury service applications replacing 57-8285072 and 57-8285074 belt references

  

• HP Range: 135HP - 175HP

• Engine Type: Mercury / Mariner DFI outboard accessory drive belt system

• Year Range: Approximately 1998 onwards for 135HP / 150HP DFI and approximately 2001 onwards for 175HP DFI, depending on model and serial number

  

🔌 Function

  

The serpentine belt drives engine accessories from the crankshaft pulley. Correct belt condition and tension are essential for reliable alternator and accessory operation.

  

Common signs of failure:

  

• Belt squeal or chirping

• Cracking, glazing or hardening on belt ribs

• Belt fraying or missing ribs

• Charging system issues

• Accessory drive slip

• Belt dust around pulleys

• Belt thrown from pulley alignment or tension issues

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 134.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 134.00 AUD | In stock |

## Images

- 57828507Q4 Mercury MerCruiser Belt | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/57828507q4-mercury-mercruiser-belt-genuine-quicksilver-oem-part)
> Updated: 2026-05-17