Multiquip 1138 Snap Ring Truarc 5100-112

The Multiquip 1138 Snap Ring Truarc 5100-112 is a genuine OEM retaining ring designed for a wide range of Multiquip and Whiteman walk-behind and ride-on power trowels, including the BH11C, BH90C, BS90C, J36, B46, PRO36, PRO46, and CA4HC series, among others. As a direct OEM component, this snap ring meets the original engineering specification for shaft and bore retention in trowel drivetrain and blade pitch assemblies. Sourced directly through the Multiquip OEM parts program, part 1138 ensures compatibility and correct installation without the guesswork of cross-referencing non-OEM alternatives. Keep a spare on hand — this small but critical fastener is commonly replaced during scheduled drivetrain service.

Key Features

• Genuine OEM Retention Spec — Manufactured to the exact radial grip force and groove profile required by Multiquip trowel drivetrain assemblies, ensuring the ring seats and releases correctly every time.
• Drop-In Compatibility — Designed to seat directly into the original Truarc 5100-112 groove dimension with no reworking of the shaft or housing bore.
• Broad Trowel Series Coverage — Fits a wide range of walk-behind and ride-on trowel models across the J, JA, B, BA, C, CA, PRO, HDA, JWN, and BH series platforms.
• Drivetrain Integrity — A correctly seated snap ring prevents axial movement of rotating components; a worn or dislodged ring allows shaft migration that accelerates bearing wear and blade pitch inconsistency.
• OEM Part Number Confidence — Ordered as Multiquip 1138, this part carries the manufacturer's part number for straightforward reordering and service record accuracy.

A snap ring — also called a retaining ring — is a fastener that clips into a machined groove on a shaft or inside a bore to prevent components from moving along the axis of the shaft. In a power trowel, snap rings like the Truarc 5100-112 are used in gearboxes, blade pitch assemblies, and drivetrain shafts to hold bearings, gears, and hubs in precise lateral position. When a snap ring loses tension, deforms, or is displaced, the components it retains can shift, creating play in the assembly that leads to accelerated wear, vibration, and potential mechanical failure of the surrounding drivetrain 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.