Spa Parts

Collection: Spa Parts

3888 products

Spa Parts

Find the replacement part your spa needs with hot tub and spa replacement parts from Gecko Alliance, Waterway Plastics, Aqua-Flo, Harwil, Dimension One, and Tecmark. PST Pool Supplies stocks the most frequently serviced spa components — from jet bodies and flow switches to pump wet ends and topside controls — starting from $10.70.

Spa systems are complex assemblies of electrical, plumbing, and mechanical components — when one component fails, having access to the exact replacement part means a quick repair rather than an extended wait. The key parts in this collection: the Aqua-Flo/Gecko XP2/XP2E pump wet end (1.5hp/2.0thp, 2\" MBT, 48-frame) is the complete hydraulic assembly for the XP2 series — the most widely used high-performance spa pump platform. The wet end includes the volute, impeller, diffuser seal, wear ring, suction cover, and all hardware; it mounts to any 48-frame XP2 motor without modification. The Gecko TSC/K-4 topside control (8-button, large rectangular LCD, without overlay) is the replacement touchpad for Gecko-controlled spas — the 8-button layout covers all standard spa functions and the large LCD displays temperature and mode information clearly. The Dimension One flow switch (6560-961, 3P MTA-100 connector) is the OEM replacement for Dimension One spa heater flow protection. The Harwil Q12DS flow switch serves Cal Spa and other systems requiring the Harwil differential pressure sensor. The Waterway Poly Storm jet body (3/8\" air barb, 3/4\" water slip, threaded, white) is the standard residential jet body for Waterway-plumbed spas. The Tecmark TDI-3428 low-profile decorative button (black) replaces worn or discolored button caps on Tecmark topside panels.

When ordering spa replacement parts, having the original part number is the most reliable identification method — check the component itself for a molded or printed part number, or look up your spa's model number in the manufacturer's parts diagram. For Waterway jet bodies and Gecko topsides, physical dimensions and connector types are the critical matching specifications when the part number is unavailable.

Shop spa replacement parts at PST Pool Supplies and get your hot tub back in service with the exact part your system requires.

Frequently Asked Questions

How do I identify the right replacement part for my spa?
The fastest and most reliable identification method is the part number molded or printed on the component itself: (1) Jet bodies — look for a number stamped on the back of the jet body flange or on the retaining nut. (2) Pump wet ends — the part number is typically molded into the volute housing. (3) Topside controls — the part number is on a label on the back of the topside panel. (4) Flow switches — the part number is on the switch body label. If the part number is unavailable, the next approach is your spa's model number — locate the spa's specification plate (usually on the equipment cabinet door or inside the skirt panel) and look up the model in the manufacturer's parts diagram. For pump wet ends, the critical specs are: horsepower rating, frame size (48-frame is most common), connection size (2" MBT for most residential spa pumps), and discharge orientation. For topsides, the connection cable type and number of buttons must match — Gecko topsides use a proprietary cable that differs from Hydro-Quip.
What is included in an Aqua-Flo XP2 pump wet end replacement?
The Aqua-Flo XP2/XP2E wet end is the complete hydraulic assembly that replaces the water-handling components of the XP2 pump while reusing the existing electric motor. The wet end kit includes: volute (the pump housing that directs water flow), impeller (the rotating component that moves water, keyed to the motor shaft), diffuser (the stationary vane assembly inside the volute), mechanical seal (the rotating seal assembly between the wet and dry sides of the pump), wear ring (the close-tolerance ring between impeller and volute that maintains hydraulic efficiency), suction cover (the front face of the pump with the suction port), and all mounting hardware (bolts and O-rings). The wet end installs by removing the 4 thru-bolts that clamp the wet end to the motor, sliding the old wet end off the motor shaft, and reversing the process with the new assembly. Wet end replacement is appropriate when the pump leaks at the seal (water from the shaft seal drain port), the impeller is clogged or damaged, or the volute is cracked — while the motor itself is still functional.
How do I replace a Gecko topside control panel?
Gecko topside control replacement is a straightforward swap: (1) Turn off spa power at the breaker. (2) Remove the old topside — most Gecko topsides snap into a rectangular cutout in the spa cabinet top and are held by plastic tabs or a retaining bezel. Press the tabs inward from the underside to release. (3) Disconnect the topside cable — a flat ribbon cable or round multi-conductor cable connects from the topside to the spa pack in the equipment cabinet. Note the connector orientation before disconnecting. (4) Connect the new topside cable to the replacement unit — Gecko topsides use a proprietary connector; the TSC/K-4 uses the standard Gecko topside cable (sold separately if damaged). (5) Snap the new topside into the cutout and restore power. The TSC/K-4 is sold without overlay — if the button labels are needed, order the matching overlay separately. The topside and spa pack must be from the same brand family — a Gecko TSC/K-4 works only with Gecko-branded spa packs.
When should I replace a spa jet body versus just the jet insert?
Replace only the jet insert (the removable nozzle face) when: the insert is cracked, discolored, or the nozzle pattern is damaged — but the jet body threaded into the spa shell wall is intact and shows no leaking. Insert replacement costs $8–$25 and takes seconds. Replace the complete jet body when: (1) The jet body is cracked — a cracked body leaks water behind the spa shell wall into the equipment cavity, causing structural damage and equipment corrosion. Replace immediately. (2) The body threads are stripped — if the jet insert can no longer thread in and lock, the body threads are damaged. (3) The body is leaking at the gasket even after re-tightening the retaining nut and replacing the gasket — the body flange may be warped or the hole in the shell wall may be damaged. The Waterway Poly Storm jet body (3/8" air barb, 3/4" water slip) is the OEM replacement for the most common residential spa jet configuration — it installs from inside the spa shell through the existing hole, secured by a retaining nut from the equipment side.