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Pressure Washer Parts & SparesPressure Washer Parts & Spares
Pump Spares by Brand

Pump Spares by Brand

Choose your pump brand below to find replacement parts and repair kits for industrial hot and cold pressure washer pumps. We stock spares for Interpump, CAT, Comet, Udor, Annovi Reverberi, Speck, Hawk, Pratissoli and Neron pumps, including seal kits, ceramic pistons, valve kits, oil seals and complete replacement pumps. Next-day delivery is available on many in-stock parts ordered before 2pm.

Not sure which part fits? Call us on 015395 66193 with your pump model, or send a photo of the identification plate, and our team will help you find the right replacement.

Annovi Reverberi Pumps and SparesCAT Pumps and SparesComet Pumps and SparesHawk Pumps and SparesInterpump Pumps and SparesInterpump HYPACK Hydraulically Driven PumpsSpeck Pumps and SparesUdor Pumps and SparesPratissoli Pumps and SparesNeron Hydraulically Driven High Pressure Pumps

1621 products

CAT 5CP31 water seal kit 33629 for high pressure pump servicing

CAT 5CP31 Water Seal Kit 33629 – Complete Pump Seal & Packing Service Kit

SKU: 1333629
Call for Price
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
SPECK UL262/2 Unloader Valve – High-performance pressure regulation component.

Speck UL262/2 Unloader Valve, 280 Bar, 135 LPM, 3/4" F x 3/4" F

SKU: 18004815
In Stock
£667.20 inc. VAT£556.00 ex VAT
Speck UL180H Unloader Valve 00.0989, 210 Bar, 3/8" F x 3/8" F

Speck UL180H Unloader Valve 00.0989, 210 Bar, 3/8" F x 3/8" F

SKU: 18000989
In Stock
£154.80 inc. VAT£129.00 ex VAT
Speck UL180 Unloader Valve 00.969, 210 Bar, 3/8" F x 3/8" F

Speck UL180 Unloader Valve 00.969, 210 Bar, 3/8" F x 3/8" F

SKU: 18000969
In Stock
£164.40 inc. VAT£137.00 ex VAT
WAP Equivalent Coil

WAP Equivalent Coil

SKU: 200080600
In Stock
£762.00 inc. VAT£635.00 ex VAT
ULH250 Unloader Repair Kit

ULH250 Unloader Repair Kit

SKU: 12141291
Available on backorder
£55.92 inc. VAT£46.60 ex VAT
ULH250 Unloader Repair Kit

ULH250 Unloader Repair Kit

SKU: 1214129
Available on backorder
£49.44 inc. VAT£41.20 ex VAT
Speck Unloader Valve UL250 Panel Mount, 250 Bar, 35 LPM, 3/8" F x 3/8" F

Speck Unloader Valve UL250 Panel Mount, 250 Bar, 35 LPM, 3/8" F x 3/8" F

SKU: 533351
In Stock
£171.60 inc. VAT£143.00 ex VAT
Speck Unloader Valve UL250, 250 Bar, 35 LPM, 3/8" F x 3/8" F

Speck Unloader Valve UL250, 250 Bar, 35 LPM, 3/8" F x 3/8" F

SKU: 53331
In Stock
£146.40 inc. VAT£122.00 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
£81.79 inc. VAT£68.16 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
£80.64 inc. VAT£67.20 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 24mm x 77mm – Fits 1050 & 1851 Series Pumps

SKU: 1343552
Call for Price
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
£224.64 inc. VAT£187.20 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 Valve Kit 3520/27/31/35/37

SKU: 1334017
Call for Price
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 5CP5120 Pump Seal Kit 1333630 – Complete Water Seal Service Kit

SKU: 1333630
Call for Price
CAT 5CP2120 5CP2140 seal kit 1333628 for high pressure pump servicing

CAT 5CP2120 / 5CP2140 Pump Seal Kit 1333628 – Complete Water Seal Service Kit

SKU: 1333628
Call for Price
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 and 5CP Pump Models

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

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 Seal Kit (Hot) 5CP2120

SKU: 1331638
Call for Price
CAT 3531 3535 3537 water seal kit 31040 complete pump service kit

CAT 3531 / 3535 / 3537 Water Seal Kit 31040 – Complete Pump Seal & Packing Service Kit

SKU: 1331040
Call for Price
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
£539.52 inc. VAT£449.60 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
Page 31 of 46

Pressure washer pump spares and repair kits

Industrial plunger pumps are built to be rebuilt. Water seals, valves, ceramic pistons and oil seals all wear with use, and replacing them with the right kit brings a pump back to its rated flow and pressure for a fraction of the cost of a new pump.

Finding the right part

  • Check the identification plate on the pump for the brand, model and serial or code number.
  • Choose the brand above, then the pump series or kits and spares section.
  • Each pump page lists its matching valve, seal, piston and oil seal kits, and many link to the manufacturer's parts list.

If the plate is worn or missing, send us a photo of the pump and we will help identify it.

Brands we cover

Annovi Reverberi, CAT, Comet, Hawk, Interpump (including HYPACK hydraulically driven pumps), Neron, Pratissoli, Speck and Udor. We supply complete replacement pumps as well as spares.

For technical advice or help choosing a part, call 015395 66193 or email sales@flowjet.co.uk.

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