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177735617842-0 - Northline Parts

Reverse Lockout Solenoid Valve 4748800 for Titan Dexter Surge Brake Actuators

SKU: NLT2K04065
$55.99 In Stock
$55.99
Sale price  $55.99 Regular price 
Ships for free in 2–4 business days.
This aftermarket reverse lockout solenoid valve replaces 4748800 and T4748800 on compatible Titan and Dexter hydraulic surge brake actuators.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Titan/Dexter Model 6 surge brake actuators
  • Titan/Dexter Model 60 surge brake actuators
  • Titan/Dexter Aero 7500 surge brake actuators
  • Newer Titan/Dexter hydraulic actuators using 4748800/T4748800

Product Overview

If a trailer with hydraulic disc brakes locks its wheels while backing up, the reverse lockout circuit may not be releasing brake pressure. This valve receives the tow vehicle's reverse-light signal and blocks actuator pressure during reverse operation.

It is intended for compatible Model 6, Model 60, Aero 7500, and newer Titan/Dexter actuator layouts. Confirm the hydraulic ports and electrical connection before purchase.

Key Features & Performance

  • Allows compatible surge-brake trailers to reverse without applying the disc brakes
  • Electrically controlled valve works with the tow vehicle reverse circuit
  • Replacement for common Titan/Dexter actuator lockout numbers
  • Useful when the existing valve leaks, sticks, or will not energize
  • Aftermarket service part for matching hydraulic brake systems

Replaces Part Numbers

  • 4748800
  • T4748800

Common Uses

  • Repairing trailer disc brakes that lock while backing
  • Replacing a corroded or leaking reverse lockout valve
  • Restoring an actuator after a failed solenoid coil
  • Servicing a boat, utility, or equipment trailer surge-brake system

Technical Specifications

  • Part Type: Reverse Lockout Solenoid Valve
  • System: Hydraulic Surge Brakes
  • Function: Blocks brake pressure during reverse
  • Replacement Type: Aftermarket
  • Quantity: One valve

Installation & Fitment

  • Verify the actuator model and existing valve number
  • Match the hydraulic port arrangement and electrical lead
  • Depressurize the brake system before removal
  • Bleed the hydraulic brakes after opening the system
  • Confirm the reverse-light circuit supplies power when reverse is selected

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.

A failed reverse-light signal, poor ground, damaged wiring, or brake actuator problem can mimic a bad solenoid. Test the circuit and compare the original valve before ordering.

Frequently Asked Questions

Q: Why do my trailer brakes lock in reverse? A: A surge actuator can apply the brakes as the trailer pushes against the tow vehicle. A working reverse lockout solenoid prevents that pressure on compatible disc-brake systems.

Q: Does this fit every Titan actuator? A: No. It fits actuator designs using 4748800 or T4748800; compare the ports and wiring.

Q: Will the brakes need bleeding? A: Yes, opening a hydraulic brake circuit normally requires proper bleeding and a leak check.

Q: Is this an OEM valve? A: No. This is an aftermarket replacement.

Part Summary

keywords: Titan reverse lockout solenoid, 4748800 valve replacement, Dexter surge brake lockout, T4748800 trailer brake valve, Model 60 reverse solenoid, Aero 7500 lockout valve

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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