Multiquip 35149 Orifice Fitting 4MJ-4MO x .020

The Multiquip 35149 Orifice Fitting 4MJ-4MO x.020 is a genuine OEM hydraulic fitting designed for HTX44 and STX55 series hydrostatic ride-on power trowels, including the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 models. As a direct OEM replacement sourced from Multiquip, part 35149 is manufactured to the same specification as the original component installed at the factory. Buyers can order with confidence knowing this fitting integrates into the hydraulic circuit without modification. DHS Equipment stocks genuine Multiquip parts to keep your finishing equipment running at full capacity.

Key Features

• Genuine OEM Hydraulic Specification — Manufactured to the exact orifice diameter (.020) and thread configuration (4MJ-4MO) of the original part, ensuring correct flow restriction within the hydraulic circuit.
• Direct Thread-Compatible Replacement — Sized and threaded to connect directly to the existing hydraulic lines on HTX44 and STX55 series trowels without reworking fittings or adapters.
• Broad HTX44 and STX55 Coverage — Confirmed fitment across HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 hydrostatic ride-on trowels.
• Precise Flow Control — The calibrated .020 orifice diameter meters hydraulic fluid at the correct rate; an incorrect or worn fitting can cause erratic blade pitch response or uneven drive behavior.
• Hydraulic System Integrity — Using the correct OEM-spec orifice fitting prevents pressure imbalances that can lead to seal wear or pump strain in the hydrostatic drive circuit.

An orifice fitting is a precision hydraulic component that meters the flow of fluid through a circuit by restricting it to a fixed bore diameter — in this case, .020 inches. In a hydrostatic ride-on trowel, orifice fittings help regulate pressure and flow to specific actuators, such as those controlling blade pitch, ensuring smooth and predictable operator response. When an orifice fitting is damaged, clogged, or replaced with an incorrect size, the hydraulic circuit can become over- or under-pressurized, resulting in sluggish controls, inconsistent blade pitch, or accelerated wear on downstream components.

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.