Multiquip 12403 Retardant Tank 5 Gallon Dual Pump

The Multiquip 12403 Retardant Tank 5 Gallon Dual Pump is a genuine OEM component designed for HHN, HTX, and STX series ride-on power trowels. This direct-replacement tank services dual-pump configurations on Whiteman ride-on trowels including the HHN31V, HHN34TVD, HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, STX55Y6, STXD6i, HTXD6i, EHHNK5, and HHNG5. As a Multiquip genuine OEM part, 12403 is manufactured to the same standards as the original component it replaces. Sourced directly from Multiquip, this tank ensures the retardant delivery system on your ride-on trowel operates exactly as intended.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original design specifications, ensuring the tank walls, fittings, and reservoir volume match the dual-pump system's flow and pressure requirements exactly.
• Dual-Pump Configuration — Built specifically to serve dual-pump retardant systems, with correctly positioned outlets for direct bolt-on installation without reworking the plumbing layout.
• Broad Ride-On Trowel Compatibility — Confirmed fitment across HHN31V, HHN34TVD, HTX44 series, STX55 series, STXD6i, HTXD6i, EHHNK5, and HHNG5 ride-on power trowel models.
• Consistent Retardant Delivery — A properly functioning 5-gallon retardant tank maintains steady fluid supply to the trowel pans, preventing concrete from bonding to blades during finishing operations.
• Exact Part Number Match — Ordering by Multiquip part number 12403 confirms you are receiving the correct tank for your machine's retardant system, eliminating guesswork during procurement.

The retardant tank stores and supplies a liquid retardant solution that is distributed across the trowel blades and pans during concrete finishing. This fluid prevents fresh concrete from adhering to the blade surfaces, allowing the trowel to glide smoothly and produce a consistent finish. When the tank is cracked, leaking, or the fittings are damaged, retardant flow becomes uneven or stops entirely, leading to blade drag, surface tearing, and accelerated wear on the finishing components.

For fitment questions or to confirm compatibility with your specific machine, contact the DHS Equipment team before ordering.

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.