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- USA
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
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Description
Simpson 90039 4000 Psi 3.3 Gpm AAA Technologies Triplex Plunger Pump KitFeatures 4000 PSI @ 3. 3 GPM PowerBoost Technology Fully adjustable unloader system with ergonomic control Sight glass and advanced oil seal technology, does away with the need for a dipstick Thermal relief protection to prevent pump overheating Dual oversized radial ball bearings are installed for better wear, friction resistance and precision ceramic coated pistons for extended seal life Crankcase is manufactured from fully anodized die cast
Features
- 4000 PSI @ 3.3 GPM
- PowerBoost Technology
- Fully adjustable unloader system with ergonomic control
- Sight glass and advanced oil seal technology, does away with the need for a dipstick
- Thermal relief protection to prevent pump overheating
- Dual oversized radial ball bearings are installed for better wear, friction resistance and precision ceramic coated pistons for extended seal life
- Crankcase is manufactured from fully anodized die cast aluminum for corrosion protection and is sealed to prevent contamination and lube failure
- Gas engine flange and hollow shaft that fits most horizontal shaft engines
What's in The Box
- AAA Triplex Plunger Pump
- Inlet/Outlet Connections
- Siphon Tube w/ Filter
- New Mounting Bolts
- Shaft Key
- Owner's Manual
Warranty
- 5-Year Limited Factory Warranty
- 30 Day Satisfaction Guaranteed
Specifications
| Sku | 90039 |
| Brand | Simpson |
| Max. Pressure | 4,000 Psi |
| Gallons Per Minute | 3.3 Gpm |
| Inlet Port | 3/4 in. GH |
| Discharge Port | 3/8 in. Quick Connect Female |
| Inlet Pressure Range | 10-60 Psi |
| Thermal Relief Port | 1/2 in. NPT |
| Shaft Diameter | 24mm |
| Key Way | M8 |
| Pump Oil Capacity | 11 fl-oz. |
| Powerboost | Yes |
| Head Material | Brass |
| Shipping Weight | 15 lbs. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Great shoes
Size: 2 Little Kid, Color: Light Pink
Love love love
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
★★★★★ 4
Snug fit
Size: 11 Little Kid, Color: Lavendar
Needed to size up from all other Skechers we have bought. But still very good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Very comfortable
Size: 2 Little Kid, Color: Light Pink
My daughter really really loves these. She said that they are the most comfortable shoes she has ever had.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Daughters favorite shoes
Size: 2 Little Kid, Color: Light Pink
Daughter loves them. Very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Cute shoes
Size: 2.5 Little Kid, Color: Lavendar
Cute, easy to slip on, and my very particular daughter actually wears them - which is saying a lot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026