Water Truck Pump Parts | UnitedBuilt, Berkeley & Franklin — UnitedBuilt Equipment Skip to content
Limited Time: Free Freight on Orders $1,000+ — May 1–May 31 | Lower 48 States
Limited Time: Free Freight on Orders $1,000+ — May 1–May 31 | Lower 48 States

Water Pump Parts

UnitedBuilt offers a complete selection of water truck pump parts designed to keep your equipment operating reliably in demanding applications. Our inventory includes impellers, mechanical seals, packing kits, shaft kits, volutes, bearings, and other essential pump components used for maintenance, repair, and rebuilds.

Our UnitedBuilt pump parts are engineered for durability and consistent performance, providing a dependable solution for maintaining and extending the life of your equipment. Designed for compatibility with common water truck pump configurations, these components are built to perform in real-world conditions.

In addition to our UnitedBuilt lineup, we also stock genuine OEM pump parts from Berkeley and Franklin Electric, ensuring proper fit and performance for a wide range of pump systems.

Whether you’re replacing a worn component or rebuilding a complete pump, our parts are selected for reliability, compatibility, and long service life.

We work to keep our most in-demand pump parts readily available and offer fast shipping to help minimize downtime and keep your equipment running.

Water Pump Parts - UnitedBuilt Equipment

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  • Volute Gasket, 4x3, UnitedBuilt M3Z S05126MS - UnitedBuilt Equipment
    87 in stock

    Volute Gasket, 4x3, UnitedBuilt M3Z S05126MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $11.50
    $11.50 - $11.50
    $11.50

    UnitedBuilt Volute Gasket 4 x 3 (M3Z) Not sure if it fits? Call us at 602-253-7739 or send us a message in our chat.  

    $0.00 - $0.00
    $0.00
    $11.50
    $11.50 - $11.50
    $11.50
  • Rope Packing Set (6 Pieces), UnitedBuilt M3ZRM S14022MS - UnitedBuilt Equipment
    106 in stock

    Rope Packing Set (6 Pieces), 1/4" SQ Braided Graphite/PTFE, UnitedBuilt M3ZRM S14022MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $27.75
    $27.75 - $27.75
    $27.75

    Rope Packing Set (6 Pieces) S14022 for B3ZRM pumps.

    $0.00 - $0.00
    $0.00
    $27.75
    $27.75 - $27.75
    $27.75
  • Hydraulic Coupler 7/8" Spline 13 Tooth, (Key Sold Separately) UnitedBuilt S30636MS - UnitedBuilt Equipment
    117 in stock

    Hydraulic Coupler 7/8" Spline 13 Tooth x 1-1/8" Shaft 1/4" Key, (Key Sold Separately) UnitedBuilt S30636MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $270.00
    $270.00 - $270.00
    $270.00

    Hydraulic Coupler 7/8" Spline 13 Tooth, (Key Sold Separately) UnitedBuilt S30636MS

    $0.00 - $0.00
    $0.00
    $270.00
    $270.00 - $270.00
    $270.00
  • Packing Split Gland, Cast Iron, UnitedBuilt M3ZRM B82468MS - UnitedBuilt Equipment
    Packing Split Gland, Cast Iron, UnitedBuilt M3ZRM B82468MS - UnitedBuilt Equipment
    47 in stock

    Packing Split Gland, Cast Iron, 1-1/8" Shaft, UnitedBuilt M3ZRM B82468MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $60.00
    $60.00 - $60.00
    $60.00

    Split packing gland set made of cast iron for B3ZRM/M3ZRM pumps.

    $0.00 - $0.00
    $0.00
    $60.00
    $60.00 - $60.00
    $60.00
  • Seal Kit, Rope Packing, UnitedBuilt M3ZRM (Gasket, Slinger, Grease Cap, Rope Kit, Bolts, and Nuts) - UnitedBuilt Equipment
    Seal Kit, Rope Packing, UnitedBuilt M3ZRM (Gasket, Slinger, Grease Cap, Rope Kit, Bolts, and Nuts) - UnitedBuilt Equipment
    Save 5% Save %
    87 in stock

    Seal Kit, Rope Packing, UnitedBuilt M3ZRM (Gasket, Slinger, Grease Cap, Rope Kit, Bolts, and Nuts)

    UnitedBuilt
    $78.20
    $78.20 - $78.20
    $78.20
    $74.29
    $74.29 - $74.29
    $74.29

    Get all the essentials you need with the UnitedBuilt Pump Accessories Bundle. This bundle includes the Rope Packing Set (6 Pieces) S14022 for B3ZRM...

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    $78.20
    $78.20 - $78.20
    $78.20
    $74.29
    $74.29 - $74.29
    $74.29
    Save 5% Save %
  • Seal Kit, Mechanical Seal, UnitedBuilt M3ZRMS (Gasket, Slinger, Grease Cap, and Mechanical Seal) - UnitedBuilt Equipment
    Seal Kit, Mechanical Seal, UnitedBuilt M3ZRMS (Gasket, Slinger, Grease Cap, and Mechanical Seal) - UnitedBuilt Equipment
    Save 5% Save %
    87 in stock

    Seal Kit, Mechanical Seal, UnitedBuilt M3ZRMS (Gasket, Slinger, Grease Cap, and Mechanical Seal)

    UnitedBuilt
    $101.72
    $101.72 - $101.72
    $101.72
    $96.63
    $96.63 - $96.63
    $96.63

    Upgrade and optimize your pump system with the ultimate bundle from UnitedBuilt. This comprehensive package includes a high-quality 1-1/8" Type C M...

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    $101.72
    $101.72 - $101.72
    $101.72
    $96.63
    $96.63 - $96.63
    $96.63
    Save 5% Save %
  • Bolt, Square Head, 3/8"-16 x 2-1/2", (2 Required for Packing Gland), UnitedBuilt M3ZRM S23762MS - UnitedBuilt Equipment
    388 in stock

    Bolt, Square Head, 3/8"-16 x 2-1/2", (2 Required for Packing Gland), UnitedBuilt M3ZRM S23762MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $6.68
    $6.68 - $6.68
    $6.68

    Bolt, Square Head, Zinc Plated 3/8-16 x 2-1/2" S23762

    $0.00 - $0.00
    $0.00
    $6.68
    $6.68 - $6.68
    $6.68
  • Slinger Water 1-3/32 ID, UnitedBuilt M3Z S12260MS - UnitedBuilt Equipment
    124 in stock

    Slinger Water 1-3/32 ID, UnitedBuilt M3Z S12260MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $3.00
    $3.00 - $3.00
    $3.00

    UnitedBuilt Water Slinger for B3Z & B4Z pumps. Not sure if it fits? Call us at 602-253-7739 or send us a message in our chat.  

    $0.00 - $0.00
    $0.00
    $3.00
    $3.00 - $3.00
    $3.00
  • Impeller, Cast Iron, Counter Clockwise (CCW), UnitedBuilt M3Z M02181MS - UnitedBuilt Equipment
    Impeller, Cast Iron, Counter Clockwise (CCW), UnitedBuilt M3Z M02181MS - UnitedBuilt Equipment
    30 in stock

    Impeller, Cast Iron, Counter Clockwise (CCW), UnitedBuilt M3Z M02181MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $295.00
    $295.00 - $295.00
    $295.00

    UnitedBuilt threaded Counter-Clock Wise (CCW) cast iron impeller for M3Z pumps (or Berkeley B3Z) style pumps.

    $0.00 - $0.00
    $0.00
    $295.00
    $295.00 - $295.00
    $295.00
  • Shaft Kit Rope Packing CCW UnitedBuilt B80696MS - UnitedBuilt Equipment
    Shaft Kit Rope Packing CCW UnitedBuilt B80696MS - UnitedBuilt Equipment
    38 in stock

    Shaft Kit, Rope Packing, B3ZRM CCW, Stressproof® Steel, 1-1/8" x 1/4" Key, UnitedBuilt B80696MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $265.00
    $265.00 - $265.00
    $265.00

    UnitedBuilt B80696MS Shaft Kit for M3ZRM CCW rope packing pump. Manufactured in the USA of original Niagara LaSalle’s patented Stressproof® steel a...

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    $0.00 - $0.00
    $0.00
    $265.00
    $265.00 - $265.00
    $265.00
  • Shaft Kit, Mechanical Seal, CCW, UnitedBuilt B80697MS - UnitedBuilt Equipment
    Shaft Kit, Mechanical Seal, CCW, UnitedBuilt B80697MS - UnitedBuilt Equipment
    38 in stock

    Shaft Kit, Mechanical Seal, CCW, UnitedBuilt B80697MS

    UnitedBuilt
    $270.65 - $270.65
    $270.65
    $270.65
    $270.65 - $270.65
    $270.65

    UnitedBuilt B80697MS Shaft Kit for M3ZRMS CCW mechanical seal pump. Manufactured in the USA of original Niagara LaSalle’s patented Stressproof® ste...

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    $270.65 - $270.65
    $270.65
    $270.65
    $270.65 - $270.65
    $270.65
  • Hex Nut, Brass, 3/8-16, (2 Required for Packing Gland), UnitedBuilt M3ZRM S23343MS - UnitedBuilt Equipment
    Hex Nut, Brass, 3/8-16, (2 Required for Packing Gland), UnitedBuilt M3ZRM S23343MS - UnitedBuilt Equipment
    532 in stock

    Hex Nut, Brass, 3/8-16, (2 Required for Packing Gland), UnitedBuilt M3ZRM S23343MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $1.50
    $1.50 - $1.50
    $1.50

    Hex Nut, Brass, 3/8-16 S23343

    $0.00 - $0.00
    $0.00
    $1.50
    $1.50 - $1.50
    $1.50
  • Mechanical Seal, Ceramic, 1-1/8" Type C (John Crane Type 21), UnitedBuilt M3ZRMS S32690MS - UnitedBuilt Equipment
    Mechanical Seal, Ceramic, 1-1/8" Type C (John Crane Type 21), UnitedBuilt M3ZRMS S32690MS - UnitedBuilt Equipment
    138 in stock

    Mechanical Seal, Ceramic, 1-1/8" Type C (John Crane Type 21), UnitedBuilt M3ZRMS S32690MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $67.63
    $67.63 - $67.63
    $67.63

    1-1/8″ Type C (John Crane Type 21) Short Mechanical Pump Seal for B3Z & B4Z model pumps. For B68416, B68417, B69876

    $0.00 - $0.00
    $0.00
    $67.63
    $67.63 - $67.63
    $67.63
  • Grease Cap, UnitedBuilt M3ZRM(S) S19033MS - UnitedBuilt Equipment
    Grease Cap, UnitedBuilt M3ZRM(S) S19033MS - UnitedBuilt Equipment
    230 in stock

    Grease Cap, UnitedBuilt M3ZRM(S) S19033MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $20.00
    $20.00 - $20.00
    $20.00

    UnitedBuilt Inner Bearing Cap for B3Z & B4Z pumps. Keeps grease on your bearings and dirt and debris out. When rebuilding a pump, check that th...

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    $0.00 - $0.00
    $0.00
    $20.00
    $20.00 - $20.00
    $20.00
  • 1 in stock

    Shaft Key 1/4" x 1" Long, UnitedBuilt S24168MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $1.00
    $1.00 - $1.00
    $1.00

    $0.00 - $0.00
    $0.00
    $1.00
    $1.00 - $1.00
    $1.00
  • Retaining Ring, External, Stainless Steel, 1-1/8" Shaft, UnitedBuilt S23009MS - UnitedBuilt Equipment
    53 in stock

    Retaining Ring, External, Stainless Steel, 1-1/8" Shaft, UnitedBuilt S23009MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $5.65
    $5.65 - $5.65
    $5.65

    Retaining Ring, External, Stainless Steel 1-1/8" Shaft, Rotor Clip SH-112SS External Rings fit into the groove of a shaft. The portion of the ring ...

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    $0.00 - $0.00
    $0.00
    $5.65
    $5.65 - $5.65
    $5.65
  • Volute, Cast Iron, 4x3, Counter Clockwise (CCW), Grooved Ends, UnitedBuilt M3Z H04041MS - UnitedBuilt Equipment
    5 in stock

    Volute, Cast Iron, 4x3, Counter Clockwise (CCW), Grooved Ends, UnitedBuilt M3Z H04041MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $350.00
    $350.00 - $350.00
    $350.00

    UnitedBuilt Volute CCW Groove (M3Z) Manufactured in the USA of Domestic and Imported Materials. ASTM126 30B heavy-duty cast gray iron Not sure i...

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    $0.00 - $0.00
    $0.00
    $350.00
    $350.00 - $350.00
    $350.00
  • Hydraulic Adapter Bracket & Coupling UnitedBuilt B07779 - UnitedBuilt Equipment
    Save 2% Save %
    1 in stock

    Hydraulic Adapter Bracket & Coupling UnitedBuilt B07779

    UnitedBuilt Choice
    $539.00
    $539.00 - $539.00
    $539.00
    $528.22
    $528.22 - $528.22
    $528.22

    Berkeley Cast Iron Hydraulic Bracket with UnitedBuilt Coupler S30636MS and 1/4" x 1" Key, B07779 UnitedBuilt S30636MS, 7/8" Spline 13 Tooth made in...

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    $539.00
    $539.00 - $539.00
    $539.00
    $528.22
    $528.22 - $528.22
    $528.22
    Save 2% Save %
  • Impeller, Cast Iron, Clockwise (CW), UnitedBuilt M3Z M02153MS - UnitedBuilt Equipment
    Impeller, Cast Iron, Clockwise (CW), UnitedBuilt M3Z M02153MS - UnitedBuilt Equipment
    12 in stock

    Impeller, Cast Iron, Clockwise (CW), UnitedBuilt M3Z M02153MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $295.00
    $295.00 - $295.00
    $295.00

    UnitedBuilt threaded Clock Wise (CW) cast iron impeller for M3Z pumps (or Berkeley B3Z) style pumps.

    $0.00 - $0.00
    $0.00
    $295.00
    $295.00 - $295.00
    $295.00
  • Shaft Kit Rope Packing CW UnitedBuilt B80698MS - UnitedBuilt Equipment
    Shaft Kit Rope Packing CW UnitedBuilt B80698MS - UnitedBuilt Equipment
    44 in stock

    Shaft Kit, Rope Packing, B3ZRM CW, Stressproof® Steel, 1-1/8" x 1/4" Key, UnitedBuilt B80698MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $265.00
    $265.00 - $265.00
    $265.00

    UnitedBuilt B80698MS Shaft Kit for M3ZRM CW rope packing pump. Manufactured in the USA of original Niagara LaSalle’s patented Stressproof® steel an...

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    $0.00 - $0.00
    $0.00
    $265.00
    $265.00 - $265.00
    $265.00
  • Rubber, Clack B4T_K 15-1/16LG Neoprene 6, Berkeley L04119 - UnitedBuilt Equipment
    Save 37% Save %
    2 in stock

    Rubber, Clack B4T_K 15-1/16LG Neoprene 6, Berkeley L04119

    Berkeley
    $182.00
    $182.00 - $182.00
    $182.00
    $115.00
    $115.00 - $115.00
    $115.00

    Berkeley Pump L04119 Repair Part for Centrifugal Irrigation & Industrial Pumps, RUBBER,CLACK B4T_K 15-1/16LG N

    $182.00
    $182.00 - $182.00
    $182.00
    $115.00
    $115.00 - $115.00
    $115.00
    Save 37% Save %
  • Volute, Cast Iron, 4x3, Clockwise (CW), Grooved Ends, UnitedBuilt M3Z H04040MS - UnitedBuilt Equipment
    31 in stock

    Volute, Cast Iron, 4x3, Clockwise (CW), Grooved Ends, UnitedBuilt M3Z H04040MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $350.00
    $350.00 - $350.00
    $350.00

    UnitedBuilt Volute CW Groove (M3Z) Manufactured in the USA of Domestic and Imported Materials ASTM126 30B heavy-duty cast gray iron Not sure if ...

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    $0.00 - $0.00
    $0.00
    $350.00
    $350.00 - $350.00
    $350.00
  • Shaft Sleeve, Stainless Steel, M3ZRM(S) UnitedBuilt S39242MS - UnitedBuilt Equipment
    23 in stock

    Shaft Sleeve, Stainless Steel, M3ZRM(S) UnitedBuilt S39242MS

    UnitedBuilt
    $0.00 - $0.00
    $0.00
    $71.50
    $71.50 - $71.50
    $71.50

    UnitedBuilt Shaft Sleeve, Stainless Steel for B3Z & B4Z pumps. Not sure if it fits? Call us at 602-253-7739 or send us a message in our chat. N...

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    $0.00 - $0.00
    $0.00
    $71.50
    $71.50 - $71.50
    $71.50
  • Shaft Kit, Mechanical Seal, CW, UnitedBuilt B80699MS - UnitedBuilt Equipment
    Shaft Kit, Mechanical Seal, CW, UnitedBuilt B80699MS - UnitedBuilt Equipment
    44 in stock

    Shaft Kit, Mechanical Seal, CW, UnitedBuilt B80699MS

    UnitedBuilt
    $270.65 - $270.65
    $270.65
    $270.65
    $270.65 - $270.65
    $270.65

    UnitedBuilt B80699MS Shaft Kit for M3ZRMS CW mechanical seal pump. Manufactured in the USA of high-quality materials with precision machining. On...

    View full details
    $270.65 - $270.65
    $270.65
    $270.65
    $270.65 - $270.65
    $270.65

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