🔧 Balboa DJAYEA Dura-Jet 1.0 HP 2-Speed Spa Pump – 115V (4239110-S)

Powerful dual-speed performance engineered for whisper-quiet hydrotherapy and efficient filtration

💧 Product Overview

The Balboa DJAYEA Dura-Jet (Model: 4239110-S) is a premium 1.0 HP dual-speed jet pump manufactured by Balboa Water Group, one of the most trusted names in the spa and hot tub industry. This 48-frame pump delivers powerful jet performance on high speed for invigorating hydrotherapy and smooth, energy-efficient water circulation on low speed for filtration and heating cycles.

Designed with a compact 48Y frame and petite volute, the DJAYEA fits easily into tight equipment compartments. The multi-directional volute mounting system and 3-position drain plug provide maximum installation flexibility, making it an ideal choice for both new builds and direct replacement applications. With carbon ceramic seals featuring Viton® elastomers, this pump is built to endure the demanding conditions of continuous heat and chemical exposure found in hot tub environments.

The DJAYEA Dura-Jet series has earned an industry-wide reputation for consistent quality, long service life, and near-silent operation — making it a popular OEM pump for numerous major spa brands.

⭐ Key Features

✅ 1.0 HP Dual-Speed Motor – High speed for powerful jet therapy, low speed for quiet filtration and heating — versatile two-in-one performance

✅ 115V / 60Hz Operation – Ideal for plug-and-play portable spa installations and standard US residential electrical systems

✅ Compact 48Y Frame Design – Petite volute and compact motor allow easy installation in tight or hard-to-fit equipment areas

✅ Carbon Ceramic Seals with Viton® Elastomers – Superior durability against prolonged heat and chemical exposure for long-lasting, leak-free operation

✅ High-Efficiency Impeller Design – Unique impeller delivers higher efficiency flow with a smaller horsepower motor than comparable pumps in its class

✅ Multi-Directional Volute Mounting – Wet end can be rotated to match your plumbing configuration (12, 3, 6, or 9 o’clock positions)

✅ 3-Position Drain Plug – Complete flexibility for drainage in various installation orientations

✅ 2″ Suction and Discharge Ports – Male Buttress Thread (MBT) connections with 3-1/16″ outside thread diameter, compatible with standard 2″ spa unions

✅ Center Suction / Side Discharge – Industry-standard configuration compatible with a wide range of spa plumbing layouts

✅ Class F Motor Insulation – Higher temperature rating for improved motor longevity and reliability

✅ 🤫 Whisper-Quiet Operation – Engineered for minimal noise, ensuring a peaceful spa experience

✅ Direct Replacement Compatibility – Replaces Balboa Ultima, Ultima Plus, and numerous DJAYEA/DJAYEB model pumps with matching specifications

⚙️ Technical Specifications

Specification	Detail
Model Number	4239110-S
Manufacturer	Balboa Water Group
Pump Series	Dura-Jet (DJ) / Cascades
Pump Type	Jet Pump
Motor Power	1.0 HP
Speed Settings	2-Speed (Dual Speed)
Voltage	115V
Frequency	60 Hz
High Speed Amperage	10.4 A
Low Speed Amperage	3.6 A
Frame Type	48Y (48 Frame)
Motor Insulation	Class F
Discharge Port Size	2″ Male Buttress Thread (MBT)
Suction Port Size	2″ Male Buttress Thread (MBT)
Port Outside Thread Diameter	3-1/16″ (approximately 78mm)
Suction Style	Center
Discharge Style	Side
Discharge Auxiliary Port	3/8″ barb (1 port)
Suction Auxiliary Ports	3/8″ barb (2 ports)
Drain Plug Positions	3-position (6 and 9 o’clock)
Mechanical Seal	Carbon ceramic with Viton® elastomers
Cord Configuration	None — hardwire (use existing cord or purchase AMP cord separately)
Replaces Part Numbers	388607, 4239110-B

⚡ Electrical Requirements

Electrical Specification	Requirement
Supply Voltage	115V (110V–120V range)
Frequency	60 Hz
Phase	Single Phase
Full Load Amps (High Speed)	10.4 A
Full Load Amps (Low Speed)	3.6 A
Cord	Not included — hardwire connection or use AMP plug cord (sold separately)

⚠️ IMPORTANT ELECTRICAL SAFETY INFORMATION:

All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Hot tubs and spas require GFCI (Ground Fault Circuit Interrupter) protection as mandated by the NEC. A dedicated circuit is required — do not share the circuit with other appliances. Install and bond the pump according to local codes and ordinances; use the bonding lug on the motor with solid copper conductor No. 8 AWG or larger.

🔄 Compatibility Guide

Frame and Connection Details:

📐 Frame: 48Y (48 Frame) — through-bolt spacing approximately 3-5/8″ 🔩 Wet End Connections: 2″ Male Buttress Thread (MBT) on both suction and discharge 📏 Port Thread Outside Diameter: 3-1/16″ (approximately 78mm) 💧 Suction: 2″ center 💨 Discharge: 2″ side (rotatable to 12, 3, 6, or 9 o’clock positions)

This Pump Is a Direct Replacement For:

The Balboa DJAYEA Dura-Jet 4239110-S is a direct replacement for the following verified part numbers:

DJAYEA-0103, DJAYEA-0001, DJAYEA-0001B, DJAYEA-0002, DJAYEA-0003, DJAYEA-0007, DJAYEA-0061, DJAYEA-0062, DJAYEA-0062A, DJAYEA-0082, DJAYEA-0112, DJAYEA-0142A, DJAYEA-0152, DJAYEA-0153, DJAYEA-0162A, DJAYEA-0182, DJAYEA-3003, DJAYEA-3022, DJAYEA-3052M, DJAYEA-3062, DJAYEA-3097, DJAYEA-3103, DJAYEA-3113, DJAYEA-3152, DJAYEA-3152M, DJAYEA-3197, DJAYEB-0001, PUULS215138GRH, PUULS215138H, 1014218, 1014253, 1054204

💡 Tip: The Balboa Dura-Jet is also a common replacement for Balboa Ultima and Ultima Plus models due to the similar overall wet end size, making plumbing connections easier during installation. To properly match your existing pump, be sure to match the amp rating (high speed between 9–11 amps) and voltage (115V).

🛠️ Installation Requirements

Mounting:

Requirement	Specification
Mounting Position	Horizontal (pump must be installed below water level for flooded suction)
Base	Solid, level surface with vibration-dampening pad recommended
Ventilation	Ensure adequate clearance around motor for air cooling
Access	Allow sufficient space for maintenance and union access

Plumbing Connections:

Connection	Size
Suction	2″ Male Buttress Thread (center)
Discharge	2″ Male Buttress Thread (side — rotatable)
Union Type	Standard 2″ pump unions (sold separately)

Wet End Rotation:

The pump ships with the discharge pointing up (12 o’clock position). The wet end can be rotated every 90 degrees (3, 6, or 9 o’clock) by loosening the four long through-bolts at the back of the motor. Torque through-bolts to 25 inch-lbs when reassembling. It is recommended that wet end rotation be performed by a professional spa technician to avoid water leaks and ensure warranty coverage.

Installation Notes:

⚠️ Pump must be installed below water level (flooded suction) — never run the pump dry, as this will cause seal damage

⚠️ Ensure proper grounding and bonding per NEC requirements

⚠️ GFCI protection is required by code for all hot tub and spa installations

⚠️ This pump ships without a power cord — use your existing AMP plug cord from the old pump, or purchase a new 2-speed AMP cord (14/4 gauge) separately

⚠️ When replacing an existing pump, it is highly recommended to replace the pump union O-rings at the same time to prevent leaks

🔧 Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Check for leaks	Monthly	Inspect around seal area and union connections
Inspect unions and O-rings	Monthly	Tighten unions if needed; replace O-rings if worn
Clean strainer/filter	As needed	Remove any debris that may restrict water flow
Check motor amperage	Annually	Should match rated values (10.4A high / 3.6A low)
Inspect motor vents	Quarterly	Keep clear of debris for proper cooling
Check mounting and through-bolts	Quarterly	Tighten if loose or vibrating

No lubrication or regular maintenance is required on this pump under normal operating conditions.

Warning Signs — Replace or Service Pump If:

• ⚠️ Unusual noise (grinding, screeching, or humming)
• ⚠️ Water leaking from the seal area
• ⚠️ Motor repeatedly trips the circuit breaker
• ⚠️ Noticeably reduced water flow from jets
• ⚠️ Motor overheating or shutting down

Seal Information:

🔒 Seal Type: Carbon ceramic with Viton® elastomers ⚠️ Replace the seal at the first sign of leakage — do not damage the seal cavity in the seal plate during replacement

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot tub jet pump	✅ Yes	Primary application — high speed powers therapy jets, low speed runs filtration/heating
♨️ Spa circulation & heating	✅ Yes	Low speed provides efficient circulation for heating cycles
♨️ Replacement for Balboa Ultima/Ultima Plus	✅ Yes	A similar wet-end size makes this a common direct replacement
♨️ Portable / plug-and-play spas	✅ Yes	115V operation is ideal for portable spa installations
🛁 Whirlpool bath	✅ Yes	Compatible with whirlpool bath applications using 2″ plumbing

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This is a 1.0 HP dual-speed pump. It draws 10.4 amps on high speed and 3.6 amps on low speed at 115V.

Q: Will this pump fit my hot tub? A: This pump has a 48Y frame with 2″ Male Buttress Thread (MBT) connections on both suction and discharge. The outside thread diameter measures approximately 3-1/16″. Check your existing pump’s frame size, port sizes, amperage, and voltage to confirm compatibility. If your current pump is a 48-frame, 115V unit drawing 9–11 amps on high speed, this is likely the correct match.

Q: What voltage does this pump require? A: 115V / 60Hz (single phase). All electrical installation must be performed by a licensed electrician in accordance with the NEC.

Q: Is this a 115V or 230V pump? A: This specific model (4239110-S) is a 115V pump. Balboa Dura-Jet pumps are also available in 230V versions at different HP ratings. Always verify the voltage of your existing pump before ordering — using the wrong voltage will damage the motor.

Q: Does this pump come with a power cord? A: No, this pump ships without a cord (hardwire configuration). You can reuse your existing 2-speed AMP plug cord or purchase a new one separately. A 2-speed AMP cord (14/4 gauge) is required for this pump.

Q: How do I rotate the wet end to match my plumbing? A: The wet end can be rotated in 90-degree increments (12, 3, 6, or 9 o’clock positions) by loosening the four through-bolts at the back of the motor. Torque to 25 inch-lbs when reassembling. Professional rotation is recommended to maintain warranty coverage.

Q: What size are the ports? A: Both suction and discharge ports are 2″ Male Buttress Thread (MBT). The outside thread-to-thread measurement is approximately 3-1/16″. Suction is center-mounted; discharge is side-mounted.

Q: What warranty is included? A: This pump includes a manufacturer warranty from Balboa Water Group. Contact Parts4Tubs for full warranty terms and details.

Q: How do I know if my pump needs replacing? A: Common signs include unusual noise (grinding or screeching), water leaking from the seal area, reduced jet flow, the motor tripping the circuit breaker repeatedly, or the motor overheating.

Q: Do I need a GFCI breaker? A: Yes, GFCI (Ground Fault Circuit Interrupter) protection is required by the National Electrical Code (NEC) for all hot tub and spa installations in the United States.

Q: Can this pump replace a Balboa Ultima or Ultima Plus? A: Yes, the Balboa Dura-Jet is a common replacement for Ultima and Ultima Plus models with matching amp ratings and voltage. The similar overall wet end size makes plumbing connections during installation easier.

📥 Downloads & Resources

📄 Sta-Rite Dura-Jet DJ Spa Pump Owner’s Manual (PDF) — Installation, operation, service, and troubleshooting guide

🏆 Why Choose the Balboa DJAYEA Dura-Jet

✅ Proven Performance — The Dura-Jet series is one of the most widely used OEM spa pumps in the industry, trusted by major hot tub brands worldwide

✅ Built to Last — Carbon ceramic seals with Viton® elastomers withstand the harshest spa water conditions for long-lasting, leak-free service

✅ Whisper-Quiet Operation — Engineered for minimal noise so you can relax in peace

✅ Energy-Efficient Dual Speed — Low speed provides cost-effective filtration and heating; high speed delivers powerful jet therapy on demand

✅ Easy Installation — Compact 48Y frame, multi-directional volute mounting, and standard 2″ MBT connections make replacement straightforward

✅ Extensive Compatibility — Direct replacement for over 30 DJAYEA and DJAYEB model numbers, plus Ultima and Ultima Plus pumps

🤝 Why Buy from Parts4Tubs

✅ US-based support from our Boca Raton, FL location — real people helping American customers

✅ Fast shipping across the United States

✅ Expert advice from spa and hot tub specialists — we’re happy to help with compatibility questions

✅ Competitive pricing in USD

✅ Full warranty support on genuine Balboa products

✅ Hassle-free returns

✅ Replacement seals, AMP cords, unions, and O-rings available

✅ Authorized Balboa online seller — buy genuine parts with confidence

✨ Summary

The Balboa DJAYEA Dura-Jet (4239110-S) is a 1.0 HP, dual-speed, 115V jet pump built on Balboa Water Group’s legendary reputation for quality and reliability. Featuring a compact 48Y frame, carbon ceramic seals with Viton® elastomers, whisper-quiet operation, and multi-directional volute mounting, this pump delivers powerful hydrotherapy jets on high speed and efficient filtration on low speed. A direct replacement for over 30 model numbers including Ultima and Ultima Plus pumps. Order yours today from Parts4Tubs — your trusted US source for genuine Balboa spa parts.

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.

2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)

3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.

4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.

5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.

6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.

7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.

8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.

9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.

10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.

11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.

12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.

13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.

14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.

15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.

2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.

3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.

4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.

5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.