When you need reliable reverse lockout solenoids for boat trailer actuators, understanding compatibility and function helps prevent accidental engagement and improves ease of use. This guide highlights five solid choices that work with popular Dexter, Titan, and Dico surge actuators, and with Dexter/Tie Down brake actuators. Each option is best suited for specific setups—whether you need a direct 12V valve, a reverse flow solenoid, or a compact lockout module. Read on to compare features and make the right pick for your trailer setup.
Summary of selected products (quick reference):
| Product | Best For | Key Feature |
|---|---|---|
| 12V Solenoid Value 4748800 / 068-213-00 | Dexter Titan/Dico 60 Surge Actuators | 12V DC operation with 1/8″ NPT male and 3/8″ 24 UNF female fittings |
| Disc Brake Solenoid XF-302A | Dexter Tie Down Engineering Brake Actuators | Reverse flow capability for brake systems |
| Disc Brake Solenoid XF-205A | Dexter Tie Down Engineering Brake Actuators | Reverse lockout solenoid for brake actuators |
| UFP Reverse Lockout Solenoid After 2020 | Utility applications needing compact lockout | Durable iron construction with compact design |
| BUYMACHINERYPARTS 4748800 | Dexter Titan/Dico 60 Surge ACTUATORS | 12V solenoid with OEM-referenced fittings |
12V Solenoid Value 4748800 Compatibility

Best for Dexter Titan and Dico 60 Surge Actuators. This solenoid is specified for 12V DC operation with a 1/8″ NPT male connection and 3/8″ 24 UNF female connection, aligning with common surge actuator fittings. Choose this if your trailer uses Titan or Dico 60 surge systems and you need a direct replacement with established OEM-like fitment.
Caution: Verify that your actuator’s port sizes match 1/8″ NPT and 3/8″ 24 UNF to avoid installation issues. Limited information on durability beyond standard use is not provided.
Disc Brake Solenoid XF-302A Reverse Flow

Best for Dexter Tie Down Engineering Brake Actuators requiring reverse flow capability. The XF-302A is designed for brake systems and supports reverse flow operations, which can improve control during retraces. This makes it a solid pick for trailer brakes that need reliable lockout disengagement under load.
Limitation: Specific compatibility with beyond-Dexter brake actuators is not stated; confirm actuator model compatibility before purchase.
Disc Brake Solenoid XF-205A Reverse Lock Out

Best for Dexter Tie Down Engineering Brake Actuators needing a dedicated reverse lockout. The XF-205A is positioned as a reverse lockout solenoid, making it suitable for applications where preventing unintended engagement is a priority. It aligns with standard Dexter brake actuator configurations.
Limitation: Specifics on voltage and port sizing are not elaborated beyond general compatibility; verify measurements with your actuator.
UFP Reverse Lockout After 2020

Best for utility applications needing a durable lockout solution. Constructed from iron, this solenoid emphasizes longevity and a compact round profile for diverse installations. Choose this when you require a sturdy, space-efficient lockout option for non-specialized trailer setups.
Caution: The description emphasizes durability but provides limited detail on electrical ratings beyond general relevance; ensure electrical compatibility with your system.
BUYMACHINERYPARTS 4748800 Replacement

Best for Titan and Dico 60 Surge Actuators requiring a direct OEM-compatible solenoid. This unit mirrors OEM numbers 068-213-00 and K68-213-00, with a 12V rating and the same port sizes as the 4748800 line. It’s a practical pick when OEM matching is a priority.
Limitation: The listing is product-specific to the Titan and Dico 60 surge actuators; verify actuator compatibility beyond model names before buying.
Buying Guide: How to Choose the Right Boat Trailer Reverse Lockout Solenoid
- Identify your actuator model: Confirm whether your system uses Dexter, Titan, Dico 60 Surge, or Tie Down brake actuators to match the correct solenoid family.
- Check voltage and fittings: Most solenoids targeted here are 12V DC. Match port fittings (1/8″ NPT male, 3/8″ 24 UNF female) to your valve or actuator ports to prevent leaks and installation issues.
- Reverse flow vs. reverse lockout: Use reverse flow solenoids if you need fluid movement in both directions or brake systems that require flow reversal. Use reverse lockout when preventing accidental engagement is critical.
- Durability and environment: Consider construction material (iron vs. generic metal) for outdoor trailer use. Corrosion resistance may matter in coastal or salty environments.
- Installation space: Choose compact designs if mounting space is limited. A round, low-profile solenoid can simplify integration into cramped trailer housings.
- OEM compatibility: When possible, select solenoids with OEM part numbers (such as 068-213-00 or K68-213-00) for straightforward replacements and known compatibility.
- Future-proofing: If you anticipate upgrading actuators or brakes, pick a solenoid with adaptable port sizes or a widely compatible mounting pattern to minimize future changes.
FAQ
- What is a reverse lockout solenoid used for on a boat trailer? It prevents unintended engagement of actuators and ensures controlled retraction or neutral states in surge braking and related systems.
- Do these solenoids require special wiring? Most listed units are designed for standard 12V DC wiring, but verify the vehicle’s electrical system and ground connections during installation.
- Can I mix solenoids from different brands? Compatibility depends on port sizes, voltage, and actuator type. It’s safer to match solenoids to the exact actuator model.
- What should I do if the solenoid doesn’t fit my port size? Check for adapters or alternative models with matching port configurations, or consult the manufacturer for a proper replacement.
- Are OEM-numbered solenoids always the best choice? OEM numbers often ensure fit and function, but verify compatibility with your specific actuator model and year.
- Is installation safe for a filled trailer with brakes? Yes, provided power is disconnected during installation and all connections are sealed against moisture and debris.