Dorman Fuel Filler Door Lock Actuator
Dorman 746-512 Fuel Filler Door Lock Actuator for Mercedes-Benz
Dorman 746-083 Fuel Filler Door Lock Actuator for Select Volkswagen Models
Dorman 746-975 Fuel Filler Door Lock Actuator for Infiniti/Nissan
Dorman Fuel Filler Door Lock Actuators: OE Fit, Long-Term Reliability
A failed fuel filler door lock actuator is more than a nuisance — it can leave you unable to open your fuel door remotely or, in an emergency, at all. Dorman has built a focused lineup of fuel filler door lock actuators engineered to restore that convenience and security with a part that installs like the original and performs well beyond OE expectations.
What a Fuel Filler Door Lock Actuator Does
The fuel filler door lock actuator is the small electromechanical motor that receives a signal from your door lock or a dedicated fuel-door release button and physically unlatches the fuel door cover. Over time, these actuators are vulnerable to two primary failure modes: electrical burnout and excessive wear to internal mechanical components. When either occurs, the driver loses the ability to remotely access the fuel filler neck — a problem Dorman has specifically engineered its replacement line to solve.
Why Dorman Stands Out in This Category
Dorman's approach to actuator design goes well beyond a simple copy of the OEM part. Every fuel filler door lock actuator in the Dorman lineup is designed to match the appearance and function of the original part on its specified application, meaning no modification or adapter hardware is needed at installation. But fitment is just the starting point.
Where Dorman distinguishes itself is in durability testing. In Dorman's own validation testing, competitor actuators have failed after as few as 700 test cycles — the equivalent of roughly six months of simulated real-world use. Dorman actuators, by contrast, are tested to 20,000 cycles, equal to approximately 15 years of use. That difference in validation standards directly reflects the expected service life of the part you're installing.
For certain vehicle applications — including select Jeep Cherokee and Dodge Durango models where the OE emergency fuel door release is known to fail — Dorman's OE FIX® assemblies go a step further. These patent-pending designs replace the fragile OE plastic cable with a braided steel cable offering higher tensile strength, better temperature resistance, and greater flexibility, while the actuator lever itself is upgraded to cast aluminum for improved durability under repeated use.
Part Numbers & Coverage
Dorman's fuel filler door lock actuator catalog spans a wide range of domestic and import vehicles, with part numbers including the 746 and 759 series covering applications across popular makes such as Hyundai, Jeep, Dodge, and others. Each part is application-specific, so confirming your vehicle's year, make, model, and trim level before purchasing ensures a correct, plug-and-play fit.
Backed by Dorman's Quality Commitment
Dorman products in this category are backed by a limited lifetime warranty covering defects in materials and workmanship, reflecting the brand's confidence in its manufacturing standards. With over a century of aftermarket engineering experience and a U.S.-based team of product experts, Dorman continues to be a trusted name for repair professionals and DIY enthusiasts alike.
- Direct-fit replacement — no modifications required for specified applications
- Tested to 20,000 cycles — far exceeding many competitors' validation benchmarks
- OE FIX® upgrades available — braided steel cables and cast aluminum levers on select fitments
- Covers collision and fatigue failures — reliable fix for both impact damage and normal wear-out
- Limited lifetime warranty — backed by Dorman's quality assurance program