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Water Pumps & Parts
UnitedBuilt offers a complete selection of water truck pumps and pump replacement parts, including our own line of 4x3 cast iron centrifugal pumps designed for demanding dust suppression and fluid transfer applications. Engineered for durability and performance, our pumps are manufactured in the USA using domestic and global high-quality materials and built to strict quality standards.
Our UnitedBuilt pumps are available in both mechanical seal (M3ZRMS) and rope packing seal (M3ZRM) configurations, providing flexibility based on your maintenance preferences and operating conditions. Each model is designed as a direct replacement for Berkeley B3ZRM and B3ZRMS water truck pumps, ensuring easy integration and reliable performance.
In addition to complete pumps, we stock a full range of pump repair parts and components, including impellers, mechanical seals, packing kits, shaft kits, volutes, and related hardware. Whether you’re rebuilding a pump or replacing a single component, these parts are selected for reliability and compatibility in real-world applications.
We also stock and distribute genuine OEM water truck pumps from Berkeley and Franklin Electric, along with supporting components to keep your system operating efficiently.
We work to keep our most in-demand pumps and parts readily available and offer fast shipping to help minimize downtime and keep your equipment running. Whether you need a complete pump or replacement parts, you’ll find dependable solutions built for the job.
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5 in stock
Case Gasket FTT, Franklin 305454042
FranklinOriginal price $43.77Original price $43.77 - Original price $43.77Original price $43.77Current price $33.50$33.50 - $33.50Current price $33.50| /Original price $43.77Original price $43.77 - Original price $43.77Original price $43.77Current price $33.50$33.50 - $33.50Current price $33.50| /Save 23% Save % -
4 in stock
Water Truck Pump, Cast Iron, 4x3 Counter-Clockwise (CCW), Mechanical Seal, Groove Volute, Franklin XS439
FranklinOriginal price $7,154.00Original price $7,154.00 - Original price $7,154.00Original price $7,154.00Current price $2,885.00$2,885.00 - $2,885.00Current price $2,885.00| /Franklin XS Series Heavy Duty Water Truck Pump Designed for Longevity: Using the latest design technology producing maximum bearing life. Rigidly-...
View full detailsOriginal price $7,154.00Original price $7,154.00 - Original price $7,154.00Original price $7,154.00Current price $2,885.00$2,885.00 - $2,885.00Current price $2,885.00| /Save 60% Save % -
4 in stock
Water Truck Pump, Cast Iron, 4x3 Clockwise (CW), Mechanical Seal, Groove Volute, Franklin XS439
FranklinOriginal price $6,450.00Original price $6,450.00 - Original price $6,450.00Original price $6,450.00Current price $2,865.00$2,865.00 - $2,865.00Current price $2,865.00| /Franklin XS Series Heavy Duty Water Truck Pump Designed for Longevity: Using the latest design technology producing maximum bearing life. Rigidly-...
View full detailsOriginal price $6,450.00Original price $6,450.00 - Original price $6,450.00Original price $6,450.00Current price $2,865.00$2,865.00 - $2,865.00Current price $2,865.00| /Save 56% Save % -
1 in stock
Shaft Ftt Franklin (PUMPW305454015)
FranklinOriginal price $2,635.00Original price $2,635.00 - Original price $2,635.00Original price $2,635.00Current price $2,016.00$2,016.00 - $2,016.00Current price $2,016.00| /Shaft Ftt Franklin (PUMPW305454015)
Original price $2,635.00Original price $2,635.00 - Original price $2,635.00Original price $2,635.00Current price $2,016.00$2,016.00 - $2,016.00Current price $2,016.00| /Save 23% Save % -
2 in stock
Ball Bearing Ftt Franklin (PUMPW305463036)
FranklinOriginal price $0.00 - Original price $0.00Original price $0.00$420.00$420.00 - $420.00Current price $420.00| /Ball Bearing Ftt Franklin (PUMPW305463036)
Original price $0.00 - Original price $0.00Original price $0.00$420.00$420.00 - $420.00Current price $420.00| / -
1 in stock
Hydraulic Drive Kit with Bracket, Coupling and Fasteners, 5" B Fit, for XS-439, Franklin 305731905
FranklinOriginal price $1,481.00Original price $1,481.00 - Original price $1,481.00Original price $1,481.00Current price $1,110.00$1,110.00 - $1,110.00Current price $1,110.00| /Original price $1,481.00Original price $1,481.00 - Original price $1,481.00Original price $1,481.00Current price $1,110.00$1,110.00 - $1,110.00Current price $1,110.00| /Save 25% Save % -
1 in stock
Wear Plate FMIH40, Franklin 305455009
FranklinOriginal price $775.00Original price $775.00 - Original price $775.00Original price $775.00Current price $592.00$592.00 - $592.00Current price $592.00| /Original price $775.00Original price $775.00 - Original price $775.00Original price $775.00Current price $592.00$592.00 - $592.00Current price $592.00| /Save 24% Save % -
3 in stock
Retaining Ring, Mechanical Seal XS-439, Franklin 305462028
FranklinOriginal price $57.00Original price $57.00 - Original price $57.00Original price $57.00Current price $45.00$45.00 - $45.00Current price $45.00| /Retaining Ring, Mechanical Seal XS-439, Franklin 305462028
Original price $57.00Original price $57.00 - Original price $57.00Original price $57.00Current price $45.00$45.00 - $45.00Current price $45.00| /Save 21% Save % -
2 in stock
Set Screw (2 Pack) FMIH-40 Fanklin, 305463075
FranklinOriginal price $21.27Original price $21.27 - Original price $21.27Original price $21.27Current price $16.25$16.25 - $16.25Current price $16.25| /Original price $21.27Original price $21.27 - Original price $21.27Original price $21.27Current price $16.25$16.25 - $16.25Current price $16.25| /Save 24% Save % -
2 in stock
Lip Seal Drive Side 439M, Franklin 305463184
FranklinOriginal price $108.00Original price $108.00 - Original price $108.00Original price $108.00Current price $82.75$82.75 - $82.75Current price $82.75| /Original price $108.00Original price $108.00 - Original price $108.00Original price $108.00Current price $82.75$82.75 - $82.75Current price $82.75| /Save 23% Save % -
1 in stock
Hydraulic Adapter Mounting Bracket, Franklin 305455017
FranklinOriginal price $729.00Original price $729.00 - Original price $729.00Original price $729.00Current price $557.00$557.00 - $557.00Current price $557.00| /Original price $729.00Original price $729.00 - Original price $729.00Original price $729.00Current price $557.00$557.00 - $557.00Current price $557.00| /Save 24% Save % -
2 in stock
Impeller Washer, MIH40 FMIT, Franklin 305455015
FranklinOriginal price $0.00 - Original price $0.00Original price $0.00$67.00$67.00 - $67.00Current price $67.00| /Original price $0.00 - Original price $0.00Original price $0.00$67.00$67.00 - $67.00Current price $67.00| /