Multiquip EM274351 Lube Box Seal

The Multiquip EM274351 Lube Box Seal is a genuine OEM component designed for LS-series hydraulic-driven concrete pumps, including the LS300GK, LS300, LS300G, LS300P, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD. As a direct OEM replacement, EM274351 is manufactured to the same specifications as the original part, ensuring a proper fit within the lube box assembly. Sourced through Multiquip's authorized parts network, this seal is stocked and sold by DHS Equipment to help keep your concrete pump running at full capacity.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to exact material and compression specifications for the lube box assembly, ensuring consistent lubrication containment under pump operating pressures.
• Direct Drop-In Replacement — Engineered to seat correctly within the existing lube box housing on LS-series concrete pumps, with no machining or adaptation needed during installation.
• Broad LS-Series Compatibility — Confirmed fitment across LS300GK, LS300, LS300G, LS300P, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD models.
• Protects Critical Pump Components — A properly seated lube box seal keeps lubricant where it belongs, preventing contamination of the pumping mechanism and premature wear on internal components.
• Leak Prevention for Continuous Operation — A failed or worn lube box seal allows lubricant to escape and contaminants to enter, leading to accelerated wear and unplanned service interruptions on the job.

The lube box seal forms a critical barrier within the lube box assembly of hydraulic-driven concrete pumps, retaining the lubricant that protects the pump's reciprocating components from metal-to-metal contact and heat buildup. Without an effective seal, lubricant migrates out of the lube box while abrasive materials and moisture can work their way in, accelerating wear on the piston rods, cylinders, and adjacent sealing surfaces. Replacing a worn or leaking lube box seal promptly with a genuine OEM part like the Multiquip EM274351 is one of the most cost-effective ways to extend the service life of an LS-series concrete pump.

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.