Wix In-Line Fuel Filter 33243 for Ford Lincoln Mercury (2003–2019) — Spin-On, Water Separation

The WIX 33243 in-line fuel filter is a direct-fit replacement designed to trap dirt, rust, scale and water before fuel reaches the injectors in many Ford, Lincoln and Mercury models from 2003–2019.

If your vehicle uses an in-line spin-on style fuel filter, the WIX 33243 provides high-efficiency filtration engineered for modern fuel-injection systems. Built to offer long service intervals and straightforward installation, this filter helps protect sensitive components from contaminants commonly found in aging fuel systems and at fuel stations. Always confirm fitment with your vehicle year, make and model before purchase.

How does this filter protect my engine and fuel system?

The WIX 33243 captures particulate matter and separates free water to reduce wear on pumps and injectors. By keeping contaminants out of the high-pressure fuel circuit, it lowers the risk of clogged injector ports and premature component failure.

• Micro-filtration media traps dirt, rust and scale particles
• Water separation reduces corrosion and injector damage
• Spin-on design seals securely to prevent bypass leakage
• Engineered for consistent flow to maintain fuel pressure

Will this WIX filter fit my Ford, Lincoln or Mercury?

The 33243 is compatible with a range of Ford, Lincoln and Mercury passenger cars and light trucks from model years 2003 through 2019, but exact fit depends on engine and chassis options. Use your VIN or the store part-finder to verify fitment before ordering.

• Fits many factory in-line spin-on locations used across the listed years
• Check vehicle-specific lookup or VIN for confirmation
• Compare physical dimensions and inlet/outlet orientation if unsure
• Contact support with vehicle details for fitment help

How easy is it to install the WIX 33243 filter?

Installation is typically quick for anyone comfortable working under the vehicle or in the engine bay: the spin-on design threads onto the existing housing and seals with a replaceable gasket. Always relieve fuel-system pressure and follow manufacturer service procedures for safety.

• Spin-on mounting for fast hand-tighten removal and replacement
• Replace O-ring or sealing gasket if provided or recommended
• Relieve fuel pressure and catch residual fuel to avoid spills
• Check for leaks after installation and before engine start-up

How does this filter affect fuel economy and maintenance intervals?

Clean fuel delivery helps the engine run efficiently; by reducing contaminant-induced injector fouling, the WIX 33243 supports consistent fuel spray patterns and combustion. It’s engineered for extended service life, but replacement frequency depends on driving conditions and fuel quality.

• Improves long-term fuel-system reliability and consistency
• Can help maintain factory miles-per-gallon when replaced on schedule
• Extended service intervals compared with lower-grade filters
• Inspect more often in dusty environments or with older fuel tanks

Who is this for: The WIX 33243 is intended for owners and technicians servicing Ford, Lincoln or Mercury passenger cars and light trucks that use a spin-on in-line fuel filter and require a high-efficiency replacement part. It’s a good choice for drivers looking to protect modern fuel-injection systems, reduce injector-related maintenance, and maintain consistent engine performance — provided fitment is confirmed for the specific vehicle application.