Description
Mercury Water-Separating Fuel Filter with Blue Sensor, V6 EFI/DFI (18458T4)
Keep your V-6 running clean and strong. The Mercury 18458T4 under-cowl, water-separating fuel filter helps remove water and debris before they reach sensitive engine components, protecting performance, fuel economy, and reliability. This kit includes the replacement filter canister and blue sensor for on-engine service.
Applications
- For Mercury and Mariner V6 Two-Stroke EFI/DFI outboards, 1996 and newer
- Under the cowl (on-engine) filter location
- Verify by model and serial number per your owner’s/service manual
Shipping & Returns
Fast shipping from Wisconsin with reliable carriers. Need help confirming fit by serial number? We’re happy to assist. Easy returns per our Return Policy.
Key Facts
- Brand: Mercury Precision
- Part #: 18458T4
- Type: Under-cowl water-separating fuel filter with blue sensor
- Engine Family: Mercury/Mariner V6 Two-Stroke EFI/DFI (1996+)
- Function: Helps keep water and debris out of the fuel system to protect efficiency and power
- Location: On-engine (under the cowl)
- UPC: 745061037502
- Country of Origin: CN
- Store Category: Parts > Fuel Filters
- OEM Quality: Backed by Mercury’s engineering, testing, and manufacturing standards
What’s Included
- 1 × Mercury water-separating fuel filter canister
- 1 × Blue sensor
Service Notes
- Replace per your maintenance schedule or if contamination/water is present
- Always depressurize the fuel system and follow manufacturer safety procedures
- Prime the system and check for leaks after installation
- Dispose of the used filter responsibly; use fresh, clean fuel to minimize water intrusion