CAT Pumps spare parts & repair kits

CAT PUMPS / SPARE PARTS & REPAIR KITS

Find your CAT pump part

Browse our current selection by pump reference, part type or part number.

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This is our current CAT parts selection, not a complete compatibility chart. Match the full pump version and part number to its parts diagram. NBR and HT seal kits are different versions.

CAT parts & accessories

31 products

OilPump OilCheck applicationPump oil for CAT pumps. Choose the required pack size and follow the lubrication instructions for your exact pump.View product →Water seal kitsCAT 30623NBR Water Seal Kit for 340/350CAT 340 / 350Cold-water NBR version. Check the pump version before choosing between NBR and HT seal kits.View product →Water seal kitsCAT 33623HT Water Seal Kit for 340/350CAT 340 / 350Hot-water HT version. Check the pump version before choosing between NBR and HT seal kits.View product →Couplings & guardsCoupling for 340/350/5CPCAT 340 / 350 / 5CPNew-type coupling. Check both pump and motor connections and the existing coupling dimensions.View product →Couplings & guardsCoupling for 3CPCAT 3CPNew-type coupling. Select the required connection variant and check both pump and motor dimensions.View product →Valves & valve partsCAT 30821Valve Kit for 340/350/5CPCAT 340 / 350 / 5CPTwo kits are required for a complete six-valve pump overhaul.View product →Plungers & plunger partsCeramic Plunger for 340/350CAT 340 / 350The pump uses three plungers. Check the number of replacement plungers required; this does not mean three are included.View product →Water seal kitsCAT 31638HT Water Seal Kit for 5CPCAT 5CPHot-water HT version. Check the exact 5CP pump version and parts diagram.View product →Couplings & guardsCoupling Guard for 340/350/3CPCAT 340 / 350 / 3CPCheck the coupling arrangement and mounting dimensions.View product →Plungers & plunger partsPlunger Seal Set for 350CAT 350Seal set for three plungers. No manufacturer part number is confirmed in this listing; compare the existing set before ordering.View product →Couplings & guardsCoupling Sleeve for 340/350/5CPCAT 340 / 350 / 5CPCheck the coupling type and dimensions before ordering.View product →Water seal kitsCAT 33628NBR Water Seal Kit for 5CPCAT 5CPCold-water NBR version. Check the exact 5CP pump version and parts diagram.View product →Couplings & guardsShaft Cover for 350CAT 350Stainless-steel shaft cover. Check the existing shaft arrangement.View product →Other partsCAT 126513HSH Screw M8 × 70Check applicationHSH screw, M8 × 70. Match part number 126513 to the parts diagram; no pump model is confirmed here.View product →Oil seals & plugsCAT 46798Oil Filler Plug for 3CP/5CPCAT 3CP / 5CPSupplied without a seal.View product →Plungers & plunger partsCAT 46841Ceramic Plunger for 5CPCAT 5CPMatch the plunger to the exact 5CP pump version and check the quantity required.View product →Plungers & plunger partsCAT 46843Brass Adapter for 5CPCAT 5CPMatch the adapter to the parts diagram of your exact pump version.View product →Oil seals & plugsCAT 46838Plunger Oil Seal for 5CPCAT 5CPPlunger oil seal; do not confuse it with the water seal kit.View product →Oil seals & plugsCAT 43222Crankshaft Oil Seal for 350/5CPCAT 350 / 5CPCrankshaft oil seal. Check the exact pump version before ordering.View product →Plungers & plunger partsCAT 45697Plunger Washer for 5CPCAT 5CPReplacement washer for the ceramic plunger assembly.View product →Plungers & plunger partsCAT 43328Plunger Washer for 5CP / 45CAT 5CP / 45Replacement washer for the ceramic plunger assembly. Confirm the exact pump version.View product →Plungers & plunger partsCAT 46749Plastic Adapter for 5CPCAT 5CPReplacement plastic adapter. Match the part number to your pump diagram.View product →Valves & valve partsCAT 43358Valve O-ring for 350/5CPCAT 350 / 5CPReplacement O-ring for the valve assembly.View product →Valves & valve partsCAT 48361Valve Guide for 350/5CPCAT 350 / 5CPReplacement guide for the valve assembly.View product →Service toolsSeal Removal Tool for 310/340/350CAT 310 / 340 / 350Seal removal tool with a 1/2-inch square drive.View product →Oil seals & plugsCAT 43228Plunger Oil Seal for 310/340/350CAT 310 / 340 / 350Plunger oil seal; do not confuse it with the water seal kit.View product →Couplings & guardsCAT 30057Shaft Key for 340/350CAT 340 / 350Replacement shaft key. Match the original key and shaft dimensions.View product →Plungers & plunger partsPlastic Adapter for 340/350CAT 340 / 350No manufacturer part number is confirmed in this listing. Compare the existing adapter before ordering.View product →Couplings & guardsCoupling Guard for 5CPCAT 5CPCheck the coupling arrangement and mounting dimensions.View product →Oil seals & plugsCAT 43211Oil Filler Plug for 340/350CAT 340 / 350Supplied without a seal.View product →Oil seals & plugsCAT 14177Oil Filler Plug O-ring for 340/350CAT 340 / 350Replacement O-ring for the oil filler plug.View product →

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