Multiquip 34565 Hydraulic Brake Line Surge

The Multiquip 34565 Hydraulic Brake Line Surge is a genuine OEM replacement designed for LS-series concrete pumps and MQ600-series trash pumps. This includes fitment across the LS300, LS300P, LS300G, LS300GK, LS400, LS500, LS600, LS60TD, LS40D, LS40TD, and LS50TD Mayco concrete pump models, as well as the MQ600TD80-TLRB, MQ600TD80-TLRP, MQ600H, MQ600HTB, and MQ600HTP. As a genuine Multiquip OEM component, part 34565 is manufactured to the same specification as the original line, ensuring a direct, correct-fit installation with no modifications to the braking circuit. Sourced directly through DHS Equipment, this part comes backed by Multiquip's OEM pedigree, giving you confidence that the surge brake system will perform as intended when the trailer is in tow.

Key Features

• Genuine OEM Hydraulic Line Construction — Manufactured to Multiquip's original pressure and flex specifications for surge brake circuits, not a generic hydraulic hose substitute.
• Direct-Connect Replacement — Engineered to match original routing, end fittings, and line length so the brake circuit reassembles correctly without splicing or adapting.
• Broad LS-Series and MQ600 Fitment — Confirmed for LS300, LS400, LS500, LS600, LS60TD, LS40D, LS40TD, LS50TD, MQ600H, MQ600HTB, MQ600HTP, MQ600TD80-TLRB, and MQ600TD80-TLRP equipment.
• Surge Brake System Integrity — A compromised hydraulic brake line causes brake fade, slow response, or complete surge brake failure under load — this OEM line restores full hydraulic pressure transmission to the brake actuator.
• Trailer Braking Safety Compliance — The surge hydraulic brake line is a safety-critical component; using the correct OEM line ensures the trailer braking system meets its original stopping performance under tow conditions.

The hydraulic brake line in a surge brake system carries pressurized brake fluid from the surge actuator at the trailer tongue to the wheel brake assemblies. When the tow vehicle decelerates, the trailer's forward momentum compresses the actuator, building hydraulic pressure that travels through this line to apply the trailer brakes automatically. If the line cracks, chafes, or develops a leak, hydraulic pressure bleeds off and the surge brakes either respond sluggishly or fail to engage altogether — a serious hazard when towing heavy concrete pump or pump trailer equipment. Replacing a degraded line with the correct Multiquip 34565 OEM part restores full brake circuit integrity and keeps the surge system operating as designed.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.