This blog is for a CAT Pumps – 8210 flex coupler assembly kit. It has everything you need in it to reduce the space requirements needed for belt driven or gearbox assemblies.
The CAT Pumps – 8210 was designed by CAT to work with 145 TC motors with horse powers up to 3. This assembly also eliminates the need for belt selection, sizing and adjusting to work properly.
CAT Pumps – 8210 – Coupler Assembly
CAT Pumps – 8210 – Coupler Assembly has the following specs:
Can adjust from 16.5 mm to 7/8″
The kits compact direct mounting feature reduces space required for belts or gearbox drive assemblies
This item insulates against heat transfer
Special urethane flexible spyder designed for extended life with high temperature and high RPM
Not sure if this coupler assembly is the correct reducing kit for your CAT Pump? Give us a call toll free and a CAT Pump specialist will be happy to assist you with your unit. We are here from 7:30 am to 4:00 pm M-F EST. Call 1-877-824-7763 {Smart Phones Click to Call}
The 8210 is priced above $50.00 making it orderable with our 5% off everyday sale at shopetsonline.com. Just use code 5off at checkout to get an additional 5% off your subtotal.
Here’s a little information for the Seal Kit 30530 from CAT Pumps for it’s 3DX series of pressure washer pumps.
This seal kit contains all the durable seals you need to repair your 3DX29GSI or 3DX30GSI units and as a bonus only one kit is needed per pump.
CAT Pumps Seal Kit 30530
Here are the pump breakdowns for Cat’s 3DX pumps, so you can see where this Seal Kit 30530 is used on the unit. 3DX29GSI or 3DX30GSI. If you are not sure exactly what pressure washer pump you have to determine if this is the correct seal kit for you, click here to find your CAT Pump breakdown.
If you have tried everything else above and are still not sure if this is the correct kit for repairing you machine to get you back up and making money then give us a call and one of our CAT Pump Specialists will be glad to assist you in determining what pump you have and the best course of action to getting it back up and running.
However, if you are sure this is the seal kit you need then you can order here directly: Seal Kit 30530
Need more than just this kit for your 3DX pump? We have you covered. Just find your kit or part on the breakdown above and then go to shopetsonline.com and add the other part numbers to the search bar in the upper left and add them to you cart and complete your order.
As always should you have any questions, concerns or simply feel more comfortable talking to a real person about your repair needs, give us a call toll free: Call 1-877-824-7763
The 30312 is the Prrrm-a-lube seal kit from CAT Pumps for the following units, the 320, 333 and 430. This valve seal repair kit 30312 will repair up to three seals on your CAT Pump. The kit’s items are all manufactured to CAT Pumps highest specifications from the finest rubber, metal and plastic to not only ensure long life of the repair parts themselves, but to extend the life of your pump and even the machine the pump is working on. So if you are noticing leakage from your CAT Pump this is probably the first repair you may want to try to correct that issue.
30312 Repair Kit from CAT Pumps
The items included in this 30312 CAT Pumps Repair Kit are:
Part number 25327 the slinger, barrier.
The O-Ring, Sleeve part number 70D25392.
O-Ring, Sleeve part number 28771.
An O-Ring, Sleeve numbered 28772.
The sleeve item number 25299.
A second sleeve with a part number of 28460.
LPS, Prrrrrm-A-Lube seal 30315, 80D.
LPS, Prrrrrm-A-Lube seal 30325.
The Seal LPS Blue DOT to use with wick and oil pan part numbered 25153.
Cotterpins (M1.6×10) that are part number 14158.
As was stated above this 30312 repair kit is for CAT Pump models 320, 333 and 430, if you need to see where this kit goes on this pumps, we have you covered for that right here. Just click the following pump to view its breakdown of parts: 320, 333, or 430.
If you are not sure what pump you have, or if this is the correct kit for your CAT Pump give us a call and we will help you verify the right items you need to get you back up and running as fast as possible. 1-877-824-7763 {Smart Phones Click to Call}
If you are sure this is the correct kit for you pump, please order it from us online by clicking the link below:
This valve repair kit 33952 is the all inclusive kit you will need to repair the valve end of your CAT Pump models 2530, 2530E, 2531 and 2537. The 33952 has everything to repair three of your pumps six valves. If you wish to replace all the valves on one of these models you will need to purchase two of these kits, and that is the recommend procedure. If your CAT Pump was manufactured before November of 1995 you will need six of these kits. The 33952 valve repair kit has elements made for the best plastic, stainless steel and rubber to ensure long life of the valve end of your pump for years to come.
33952 Valve Repair Kit from CAT Pumps
This 33952 repair kit comes with all elements that can be seen on your pumps breakdown or by looking at the photos below. The location item numbers included in this kit are 143,154,155,164,165,166,167 & 168.
Exploded view of where 33952 CAT Pump kits locationLine items from Breakdown of what’s included in the CAT 33952 Pumps Repair Kit.
If, even after reading all this information, and looking at your specific pumps breakdown and service manual, you still need some help determining if the 33952 is the correct kit for your repair, please give us a call and we will be happy to help you in determining which valve kit you need. 1-877-824-7763 {Smart Phones Click to Call}
Remember you will need two of these kits to repair all 6 valves on your CAT Pump, which is the recommend procedure when fixing this end of your unit.
This 30378 is the piston repair kit you will need if your trying to repair any 3DX series of Pump from CAT. The 30378 contains everything you will need to do this type of repair on your unit. All the items included in this very popular repair kit are made from the strongest metal, plastic or rubberized materials, to not only insure the repair lasts a very long time, but also that nothing will break, tear or bend during your actual repair of your 3DX pump. The kit comes with the instructions on how to use the item, and is so easy it’s the perfect kit for the do it yourself type of pump repair.
30378 Repair kit for 3DX pumps from CAT Pumps
The items included in the CAT 30378 Pumps repair kit are:
One piston assembly part number on your pumps breakdown is 548230.
The 13969 which is the piston retainer o-ring – 70D.
If you are having issues finding your pump or your are still unsure if this is the correct repair kit you need to get your unit back up and running, please don’t hesitate to give one of our CAT Pumps specialists a call at the number below and they will be able to help you determine the right repair that is needed for your pump. 1-877-824-7763 {Smart Phones Click to Call}
If you are sure this is the correct kit for your style of pump and the repair you are trying to do, please order it at the link below.
Maintaining high-pressure pumps doesn’t have to be complicated or time-consuming — especially when you have the right parts on hand. For those using CAT Pumps in commercial or industrial applications, the CAT Pumps 34235 Valve Kit is a must-have for ensuring long-lasting performance and preventing costly downtime.
What is the CAT 34235 Valve Kit?
This OEM repair kit is specifically designed for a range of CAT Pump models, including:
3535
3520
35
203
535
It includes everything you need to replace three valves per kit (two kits are required for a complete pump rebuild). Whether you’re dealing with decreased performance, pressure loss, or leaks, this kit can help restore your pump to like-new condition.
Why Routine Valve Maintenance Matters
Pump valves are critical components in regulating flow and pressure within your pump system. Over time, these valves wear down due to normal use, exposure to chemicals, or contamination in the water. Faulty or worn valves can lead to:
Inefficient performance
Leaking seals
Increased energy use
Unplanned downtime
That’s why routine valve inspection and replacement is recommended as part of any proactive maintenance plan. Using the CAT 34235 Valve Kit ensures your system is operating at peak efficiency with OEM-quality parts designed to meet the demands of high-pressure environments.
What’s Included in the Kit?
Each 34235 Valve Kit includes replacement parts for key valve components identified in CAT’s parts breakdown, including:
Valve assemblies
O-rings
Retainers
Springs
These are all matched to factory specifications and tested for durability and proper sealing under pressure. All components correspond to breakdown positions: 162, 163, 164, 166, 167, 168, 170, 172, and 173.
💡 Pro Tip: You’ll need two kits per pump to replace all six valve positions.
Benefits of Choosing OEM Parts
When it comes to high-performance pump systems, OEM (Original Equipment Manufacturer) parts make all the difference. Here’s why:
Exact fit: No guesswork or compatibility issues.
Longer lifespan: Engineered for the same durability as your original parts.
Reduced risk of failure: OEM parts maintain system integrity.
Faster repairs: All parts are pre-packed and labeled for quick installation.
Aftermarket kits may seem more affordable at first glance, but poor materials or mismatched specs can end up costing far more in the long run.
Fast, Reliable Shipping from ShopEtsOnline
At ShopEtsOnline.com, we carry the CAT Pumps 34235 Valve Kit in stock and ready to ship — typically within 1 to 7 business days. Plus, our customer service team is always available to help you identify the right kit, find pump manuals, or assist with bulk orders.
Final Thoughts
If you’re running a CAT Pump model 3535, 3520, 203, or similar, the 34235 Valve Kit is one of the most cost-effective ways to extend the life of your equipment. Don’t wait for a failure — keep your system running clean and efficient with scheduled maintenance and quality OEM parts.
Items included in the 34235 CAT Pumps Valve Repair Kit:
This kit contains* all of the items on the breakdown in positions 162,163,164,166,167,168,170,172 & 173 (*see breakdown for part numbers)
Parts Breakdown list for CAT Pumps 34235 Valve Repair KitLocation of parts in the 34235 repair kit from CAT pumps
CAT Pumps are one of the most reliable and well built pumps on the market today, but even they need some TLC from time to time. The valve repair is one of the most common of this type up tune up and can be easily completed by a repair shop or even the pumps owner with this state of the art valve repair kit numbered 34235. If you need to see the location of this kit on a manual for your pump, find your pumps breakdown on our CAT Manuals page and then give us a call.
Having trouble determining if this is the correct valve repair kit for the pump you own? Not a problem, give one of our CAT Pump Specialists a call and we will help you get the right kit for your needs.
This 33623 is a high temperature seal repair kit from CAT Pumps, made to increase the temperature of the pumping liquid over the normal working temps of their pumps. The 33623 is for pumps 310, 340 and 350. All the items in this hi temperature seal kit are made from the finest rubber and plastic, and have been heat tested to be sure that they will stand up to the high temperatures you will be running through your machine with this seal kit installed. This state of the art kit from CAT is the first thing you will need to use to change up the seals when working at temperatures about 140 degrees F.
33623 Hi Temp Seal kit from CAT Pumps
The items in this 33623 hi temp seal kit from CAT Pumps are:
A quantity of three of the part number 46667 the HPS w/S-HT
Three of the item numbered 43305 which is the LPS w/S SPG NBR
The 14200 which is the o-ring seal case 70 NBR in a quantity of three.
A set of item number 17399 the o-ring plunger retainer 80 NBR also in a quantity of three.
Three of the 43302 wick.
We are ETS Company understand CAT Pumps and there workings, and recommend this kit for the pumps listed above when you think you might go over 135 degrees with your cleaning liquid. If you don’t see your pump listed above, as using this repair kit, please find your pumps breakdown on our CAT Pumps Manuals page to determine if this is the correct kit for your unit. Click here to go to our CAT Pumps Breakdown Page.
Still not sure if this repair kit is the correct item for you, give us a call and we will be happy to assist you in determining the correct high temperature kit for your specific pump. 1-877-824-7763 {Smart Phones Click to Call}
Or you can order this kit directly online from the link below.
The 30623 is a very common seal repair kit for the following CAT Pump models the 30, 31, 34, 35, 310, 340 & 350. This repair kit the 30623 comes with all the seals, spacers and other parts needed to repair this end of your pump. All the items in this kit can be found on your pumps breakdown, but for ease of identification we will list all breakdown part location numbers here for you, they are in locations 97,101,106,121 and 125. Please be sure to verify this with your pumps breakdown located elsewhere in this blog. All of the items in this seal repair kit are made from the best rubber and plastic that CAT Pumps can acquire, to ensure the tightest and most leak proof seals for your pump and machine.
30623 Seal Repair Kit from CAT Pumps
The items numbered 97,101,106,121,125 from the 30623 breakdown are:
Three of the o-ring plunger retainer.
The long tab wick in a quantity of three.
Three Seals, that are identified as LPS w/S-Spg.
Seal case o-ring in a quantity of three.
HPS w/S which is another seal and also in a quantity of three.
Items numbered 97,101,106,121,125 from the 30623 breakdown
You can find breakdowns for your specific pump and see where the 30623 seal repair kit is used, by clicking one of the following units: 30, 31, 34, 35, 310, 340 and the 350. As always verify with your models breakdown before you purchase kits to be sure you are getting the correct repair for your machine. If even after you have checked your manual or breakdown and are still not sure of what kit you need, please give one of our CAT Pump Specialists a call and we will help you determine the best repair kit for your needs. Call 1-877-824-7763 {Smart Phones Click to Call}
When you are looking for a new pump or to repair an already owned one, you have a lot of choices, and CAT Pumps is one of the best. Like CAT Pumps we have been in the pressure washer industry business for over 30 years and have the knowledge and expertise to stand behind what we sell. The big box stores can’t claim that. So when your ready to repair your seals order this kit from us by clicking the link below.
The 30821 is the valve repair kit needed to fix your 310, 340, 350, 5CP2120W, 5CP2140WCS or 5CP2150W pump. This 30821 comes with three complete valves assembled and you will need 2 kits to fix all the valves on one of these pumps. As with all CAT Pump repair kits this one is made to last with the finest metal, plastic and rubber elements that could be purchased to manufacture these items. These all combine to give not only your machine and pump a longer work life, but also help in the water tightness of the valve end of your pump.
30821 Valve Kit from CAT Pumps
The items in this 30821 Valve Repair kit can be seen on the Parts Breakdown by clicking here, or looking at the diagram and photos below. Per the manual this kit includes part numbers on the diagram of 162-164,166-168,172.
CAT Pumps Breakdown showing the location of the 30821 Valve Repair Kit
Here is the actual listing of parts for these pumps remember that this kit contains items 162-164,166-168,172.
Listing of parts including the 30821 kits items.
For ease of understanding we have included all the items here for you as well in this 30821 kit:
Three of the Back-Up Ring, Seat part number 48361.
A set of three O-Ring, Seat -70D numbered 43358.
Three of the Seat item number 43725.
Valve part number 43723 in a quantity of three.
The Spring Valves item number 43750.
O-Ring, Valve Plug numbered 44565.
After looking over all of the above information about this repair kit, if you are still not sure if this is the correct kit for your needs, or you are not sure if you will need to replace all the valves or just a few, give us a call and we will help you determine the best repair for your situation. Call 1-877-824-7763 {Smart Phones Click to Call}
You can also order this kit online by clicking the link below. Please remember that if you are replacing all the valves on your pump you will need to order two of this item.
