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CAT Pumps & Spares

Shop CAT pressure-washer pumps and replacement parts, including water-seal kits, valve kits, ceramic pistons, O-rings, oil seals, retainers, filler caps, unloaders, bell housings and drive couplings. Check the exact CAT pump model and part number before ordering.

122 products

CAT Ceramic Piston 16mm x 50mm – Fits 5CP31 Pump Model

CAT Ceramic Piston 16mm x 50mm – Fits 5CP31 Pump Model

SKU: 1346884
In Stock
£76.99 inc. vat£64.16 ex vat
CAT Ceramic Piston 17mm x 13mm – Fits 2SF & 2SFX Pumps

CAT Ceramic Piston 17mm x 13mm – Fits 2SF & 2SFX Pumps

SKU: 1345847
Available on backorder
£60.14 inc. vat£50.12 ex vat
CAT Ceramic Piston 16 x 72mm – OEM Replacement for CAT 45 Pumps

CAT Ceramic Piston 16 x 72mm – Fits CAT 42HS, 45 & 45G1 Pump Models

SKU: 1345783
In Stock
£119.81 inc. vat£99.84 ex vat
CAT Ceramic Piston 20 x 77mm – OEM Replacement Pump Part

CAT Ceramic Piston 20 x 77mm – Fits CAT 650, 660, 661, 1861 & 681 Pump Models

SKU: 1343300
In Stock
£213.12 inc. vat£177.60 ex vat
CAT Inlet Valve Kit 1334668 – OEM Replacement for 2SF Pump Models

CAT Inlet Valve Kit (2SF) – Fits 2SF Pump Models

SKU: 1334668
Available on backorder
£111.36 inc. vat£92.80 ex vat
CAT Discharge Valve Kit (4SF) – Fits 4SF ELS & GS1 Pump Models

CAT Discharge Valve Kit (4SF) – Fits 4SF ELS & GS1 Pump Models

SKU: 1334055
Available on backorder
£247.68 inc. vat£206.40 ex vat
CAT 2SF pump seal kit 34053 with water and oil seals

CAT 2SF Pump Seal Kit 34053 – Water Seal & Oil Seal Service Kit

SKU: 1334053
In Stock
£234.24 inc. vat£195.20 ex vat
CAT 5CP31 water seal kit 33629 for high pressure pump servicing
CAT Ceramic Piston 11 x 41mm – Fits CAT 280, 281, 290 & 291 Pump Models

CAT Ceramic Piston 11 x 41mm – Fits CAT 280, 281, 290 & 291 Pump Models

SKU: 1329614
Available on backorder
£34.75 inc. vat£28.96 ex vat
CAT Ceramic Piston 25299 26mm x 40mm

CAT Ceramic Piston 25299 26mm x 40mm for 333, 331, 335, 430, 431 & 435 Pumps

SKU: 1325299
In Stock
£40.90 inc. vat£34.08 ex vat
CAT Ceramic Piston 18mm x 43mm – Fits CAT 3CP Series Pumps

CAT Ceramic Piston 18mm x 43mm – Fits CAT 3CP Series Pumps

SKU: 1346976
In Stock
£51.12 inc. vat£42.60 ex vat
CAT CERAMIC PISTON 18 X 50 (5CP51)

CAT Ceramic Piston 46893 18mm x 50mm for 5CP5120 & 5CP5150 G1 Pumps

SKU: 1346893
In Stock
£50.40 inc. vat£42.00 ex vat
CAT Ceramic 20x50

CAT Ceramic Piston 20mm x 50mm (5CP21) – Fits CAT 5CP Pump Models

SKU: 1346841
In Stock
£94.85 inc. vat£79.04 ex vat
CAT OIL SEAL (1 ONLY) (3CP)

CAT OIL SEAL (1 ONLY) (3CP)

SKU: 1346839
In Stock
£13.44 inc. vat£11.20 ex vat
CAT PISTON ROD SEAL (5CP)

CAT PISTON ROD SEAL (5CP)

SKU: 1346838
In Stock
£13.44 inc. vat£11.20 ex vat
CAT CERAMIC PISTON 18 X 43 (230/240/270)

CAT CERAMIC PISTON 18 X 43 (230/240/270)

SKU: 1343901
In Stock
£111.74 inc. vat£93.12 ex vat
CAT Ceramic Piston 24mm x 77mm – Fits 1050 & 1851 Series Pumps
CAT Ceramic Piston 20 x 72mm – Fits CAT 310, 340, 350 Pump Models

CAT Ceramic Piston 20 x 72mm – Fits CAT 310, 340, 350 Pump Models

SKU: 1343367
In Stock
£169.15 inc. vat£140.96 ex vat
CAT Ceramic Piston 16mm x 77mm – Fits 51, 55 & 550 Pumps

CAT Ceramic Piston 16mm x 77mm – Fits 51, 55 & 550 Pumps

SKU: 1343311
In Stock
£218.88 inc. vat£182.40 ex vat
CAT Ceramic Piston 18mm x 77mm – Fits 53, 56, 57, 530 & 654 Pumps

CAT Ceramic Piston 18mm x 77mm – Fits 53, 56, 57, 530 & 654 Pumps

SKU: 1343232
In Stock
£177.60 inc. vat£148.00 ex vat
CAT PISTON ROD OIL SEAL X 1

CAT PISTON ROD OIL SEAL X 1

SKU: 1343228
In Stock
£12.67 inc. vat£10.56 ex vat
CAT Pump Valve Kit (1050) (x3) – Fits CAT 1050, 5CP6190 & 7CP Pump

CAT Pump Valve Kit (1050) (x3) – Fits CAT 1050, 5CP6190 & 7CP Pump

SKU: 1334920
In Stock
£173.38 inc. vat£144.48 ex vat
CAT Pump Valve Kit 34052 – Fits 2SF Pump Models

CAT Pump Valve Kit 34052 – Fits 2SF Pump Models

SKU: 1334052
In Stock
£140.35 inc. vat£116.96 ex vat
CAT VALVE KIT 3520/27/31/35/37
CAT 3CP1120 3CP1130 3CP1140 water seal kit 1333983 with high pressure seals, low pressure seals, O-rings and washers.

CAT 3CP1120 / 3CP1130 / 3CP1140 Water Seal Kit 33983 – Complete Pump Seal Service Kit

SKU: 1333983
In Stock
£158.02 inc. vat£131.68 ex vat
CAT Seal Kit 5CP5120 for CAT 5CP5120 pump
CAT 5CP2120 5CP2140 seal kit 1333628 for high pressure pump servicing
CAT 340 350 hot water pump seal kit 33623 with high temperature seals, O-rings and wick components for pump servicing.

CAT 340 / 350 Hot Water Pump Seal Kit 33623 – High Temperature Water Seal Service Kit

SKU: 1333623
In Stock
£241.92 inc. vat£201.60 ex vat
CAT Pump Valve Kit (3CP1120/30/40) (x3) – Fits CAT 3CP Pump Models

CAT Pump Valve Kit (3CP1120/30/40) (x3) – Fits CAT 3CP Pump Models

SKU: 1333062
In Stock
£63.74 inc. vat£53.12 ex vat
CAT Pump Valve Kit (45X3/5CP3120/5120) – Fits CAT 45 & 5CP Pump Models (SKU 1333060)

CAT Pump Valve Kit (45X3/5CP3120/5120) – Fits CAT 45 & 5CP Pump Models (SKU 1333060)

SKU: 1333060
In Stock
£134.59 inc. vat£112.16 ex vat
CAT Seal Kit Hot 3CP for CAT 3CP pump

CAT 3CP Hot Water Seal Kit 31983 – Complete High Temperature Pump Seal Service Kit

SKU: 1331983
In Stock
£224.64 inc. vat£187.20 ex vat
CAT SEAL KIT (HOT) 5CP2120
CAT 3531 3535 3537 water seal kit 31040 complete pump service kit
CAT SEAL KIT 2530/2531/2537 Pump Seal Kit 330952 – Complete Water Seal & Packing Service Kit

CAT SEAL KIT 2530/2531/2537 Pump Seal Kit 330952 – Complete Water Seal & Packing Service Kit

SKU: 1330952
In Stock
£449.60 ex vat£404.64 ex vat
CAT Pump Valve Kit (230/240/270) (x6) – Fits CAT 230, 240 & 270 Pumps

CAT Pump Valve Kit (230/240/270) (x6) – Fits CAT 230, 240 & 270 Pumps

SKU: 1330915
In Stock
£251.52 inc. vat£209.60 ex vat
CAT 230 240 270 279 high pressure pump seal kit 30914 replacement parts
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Cat Pumps has proven to offer the most dependable high-pressure piston and plunger pumps available in the marketplace. The Cat Pump can produce 1 to 240 GPM and 100 to 10,000 PSI.  Our customers choose Cat Pumps due to the low life-cycle cost, providing exceptional value over the life of the system. 

Cat Pump have earned themselves a reputation for quality and performance for every day in applications requiring high-pressure water and other fluid pumping machines. Market segments include:

  • Misting/Cooling/Fogging
  • Reverse Osmosis
  • Commercial Cleaning
  • Hydro excavation
  • Vehicle Cleaning
  • Government & Military
  • Agriculture
  • Pressure Washing
  • Food Processing
  • Manufacturing
  • Oil & Gas

Cat Pumps are easy to service and repair. Many of our customers repair pumps as they are a solid and reliable pump that is cost-effective to keep running. We sell all industrial Cat spares. Feel free to get in touch. 

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