Pool Pump Motor Died? UST1102 1HP Replacement for Hayward Max Flow — Fitment, Cross-Reference, and the 48-Hour Rule

Arizona Was Pool Country Before Pool Country Was Cool

Arizona's love affair with swimming pools is older than air conditioning. In the 1930s the Civilian Conservation Corps built a swimming pool at the bottom of the Grand Canyon — at Phantom Ranch, reachable only by mule or on foot — because even a mile below the rim, an Arizona summer demanded one. After the war, when Phoenix and Mesa boomed, the backyard pool became the Valley's defining luxury; today metro Phoenix has one of the highest pool-per-household rates in America. All of those pools share one hard-working, completely unglamorous part: the pump motor.

Phantom Ranch, 1936 — Arizonans built a pool at the bottom of the Grand Canyon. Priorities. (photo: Wikimedia Commons)

The 48-Hour Rule

Every desert pool owner learns this exactly once: in a Phoenix-area July, a pool with a dead pump goes from crystal to green in about 48 hours. No circulation means no filtration and no chlorine distribution, and at 95-degree water temperatures algae doesn't wait politely. The usual failure isn't the whole pump — the wet end, housing, and impeller are usually fine. It's the motor: bearings scream for a week, then one morning it hums, trips the breaker, and quits. Replacing just the motor instead of the whole pump assembly typically saves hundreds — a service call plus a full new pump can run $700–$1,200, while this motor is $279.99.

What This Motor Is

The 1HP 230/115V replacement pool pump motor for the Hayward Max Flow is an aftermarket UST1102-pattern motor: 1 horsepower, 56J frame, single-speed 3,450 RPM, dual-voltage 230/115V, 60Hz, with a 1.10 service factor and a 2-year manufacturer warranty. The 56J square flange is the standard pool-motor mounting pattern, so it bolts to the existing Max Flow wet end with your existing plumbing untouched.

The data plate on our actual unit: 230/115V, 3450 RPM, 56J frame — match it to yours

Check Your Fitment (60 Seconds, Flashlight Required)

Find the data plate on your current motor and match any of these: UST1102, SP1607Z1M, SP1607Z1MBK, SP1607Z1MH, C48K2N117A9, C48K2N143 (A3–A9), 168098, 177019, B228, B228SE, C1318, EB228, 54023, and the 8-168098 / 8-177019 series. If your plate says 1HP, 56J frame, 3,450 RPM — you're almost certainly looking at the right motor. Dual 230/115V wiring means it adapts to either supply at the terminal board (match whatever your old motor was wired for).

• 1 HP, single-speed 3450 RPM — like-for-like swap for standard Max Flow systems
• Dual voltage 230/115V — works with either pool circuit
• 56J frame — the standard square-flange pool mount
• 2-year manufacturer warranty

One honest note: some states are phasing in variable-speed requirements for new pump installations — if you're doing a planned full-system upgrade, a variable-speed pump saves electricity long-term. But when the motor dies in July and the pool is turning, a like-for-like single-speed motor swap is the fastest, cheapest way to get water moving today.

From Our Warehouse to Your Equipment Pad

AZ Sun Valley Sales is a family-run liquidation reseller in Mesa, Arizona — we live where pools are non-negotiable. This motor is inspected and photographed by us, ships within 1 business day, and at over $100 it ships free, with 30-day returns.