# 3518458Q3 Mercury MerCruiser 351458Q4 Fuel Filter Kit | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Fuel / Water Separating Filter Kit - Part Number: 35-18458Q3

  

A genuine Quicksilver fuel / water separating filter kit for selected Mercury V6 EFI, DFI and OptiMax fuel systems. This filter assembly is the style with the blue screw-in sensor and is used to separate water and fine contaminants from the fuel supply before it reaches the high-pressure fuel system.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM fuel filter kit

• Correct Mercury part number 35-18458Q3

• Related service reference 35-18458Q4

• Water separating fuel filter with blue screw-in sensor application

• Used on selected Mercury V6 EFI, DFI, OptiMax, SeaPro, Marathon, Jet and Pro Max applications

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 35-18458Q4 → Supersedes 35-18458Q3

• 35-18458Q3 → Supersedes 35-18458T4

• 35-18458T4 → Supersedes 35-18458A4

• 18458A4 earlier OEM reference

  

OEM / Related Numbers:

  

• 35-18458Q3

• 18458Q3

• 3518458Q3

• 35-18458Q4

• 18458Q4

• 35-18458T4

• 18458T4

• 35-18458A4

• 18458A4

• 184584

• 184585

• 35-18458T12

• 35-18458Q12

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-7968

• Mallory: 9-37806

• Red Rhino: ME-F119

• Recmar: REC35-18458Q4

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury V6 EFI / DFI / OptiMax fuel filter assemblies with sensor

  

Typically suits:

  

• Engine models:

• Mercury 135 DFI / OptiMax 2.5L - V-135 DFI applications

• Mercury 150 DFI / OptiMax 2.5L - V-150 DFI applications

• Mercury 175 DFI / OptiMax 2.5L - V-175 DFI applications

• Mercury 150 EFI 2.5L - V-150 EFI applications

• Mercury 175 EFI 2.5L - V-175 EFI applications

• Mercury 200 EFI 2.5L - V-200 EFI applications

• Mercury 200 DFI Jet Drive - powerhead and pump applications

• Mercury 200 DFI M2 Jet Drive - powerhead and pump applications

• Mercury 200 DFI / OptiMax 3.0L applications

• Mercury 225 DFI / OptiMax 3.0L applications

• Mercury 225 DFI DTS 3.0L applications

• Mercury 250 DFI / OptiMax 3.0L applications

• Mercury 250 DFI M2 Jet Drive - powerhead and pump applications

• Mercury 200 / 225 / 250 3.0L EFI SeaPro / Marathon applications

• Mercury 200 / 225 / 250 3.0L SeaPro / Marathon EFI applications

• Mercury 225X EFI Pro Max applications

• Mercury 300X EFI 3.0L Pro Max applications

  

• HP Range: commonly 135HP - 300HP

• Engine Type: Mercury V6 EFI / DFI / OptiMax 2-stroke outboard

• System Type: Fuel / water separating filter with sensor

  

🔌 Function

  

The fuel filter separates water and removes fine contaminants before fuel enters the high-pressure fuel system, helping protect injectors, pumps and vapor separator components.

  

Common signs of failure:

  

• Fuel restriction under load

• Water contamination warning or water in filter

• Engine surging or hesitation

• Hard starting after contaminated fuel

• Blue sensor or filter bowl service required

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 70.95 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 70.95 AUD | In stock |

## Images

- 3518458Q3 Mercury MerCruiser 351458Q4 Fuel Filter Kit | Genuine Quicksilver OEM Part

---

> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/3518458q3-mercury-mercruiser-351458q4-fuel-filter-kit-genuine-quicksilver-oem-part)
> Updated: 2026-05-17