2″ Replacement Diaphragms for Pumps
Need a 2-Inch Diaphragm That Actually Fits Your Pump?
Finding the right 2 inch replacement diaphragms should not slow your crew down.Read More
Ken’s Distributing stocks 2-inch diaphragms for the most common pumps on the jobsite, in four materials, ready to ship the same day. This page shows you what we carry, how to pick the right material, and how to confirm the fit before you order. A worn diaphragm means lost suction, weak flow, and a pump that quits when you need it most. The good news is that the part is easy to replace once you know your pump model and the material you need.Shop 2-Inch Diaphragms by Pump Brand
Most 2-inch pumps use a brand-specific diaphragm. Find your pump below, then choose your material. If your model is not listed, send it to us and we will match it.| Pump Brand | 2-Inch Models / Part Number | Materials We Stock |
| CH&E | 2″, including the 5400 Series aluminum pump | Rubber, Neoprene, Buna, TPE |
| AMT | Model 336 and a “No Holes” variant | Rubber, Neoprene, Buna, TPE |
| Generac Magnum | 2″, including the MCP6400 cast iron | Rubber, Neoprene, Buna, TPE |
| Mud Hog | 2″ | Rubber, Neoprene, Buna, TPE |
| Wacker Neuson | 2″ | Rubber, Neoprene, Buna, TPE |
| Gorman-Rupp | 2″ | Rubber, Neoprene, Buna, TPE |
| Multiquip | 2″ | Rubber, Neoprene, Buna, TPE |
| Riverside | 2″ | Rubber, Neoprene, Buna, TPE |
| Tsurumi | TD5-200 (3360-300-00-R rubber, 3360-300-00-N neoprene) | Rubber, Neoprene |
Which Material Is Right for Your 2-Inch Pump?
The material decides how long your diaphragm lasts and what fluids it can handle. Here is a plain breakdown so you can pick with confidence.Rubber
Rubber is the budget-friendly pick for plain water and light-duty jobs. It flexes well and handles everyday dewatering without trouble. Many crews keep a few of our rubber replacement diaphragms on the truck as spares.Neoprene
Neoprene is the tough all-arounder. It has strong tensile strength and shrugs off weather and flex cracking, which makes it a smart choice for construction and steady water handling. Our neoprene diaphragms are a common upgrade from worn rubber parts.Buna (Nitrile)
Buna resists oils, fuels, and hydrocarbons. Pick it when you pump near diesel, lubricants, or petroleum fluids, since plain rubber breaks down fast around those.TPE (Santoprene)
TPE blends thermoplastic strength with rubber-like flex and broad chemical resistance. It is one of the longest-lasting choices for heavy industrial use. See the full lineup of TPE Santoprene diaphragms if uptime matters most.How to Measure a 2-Inch Diaphragm Before You Order
The word “2-inch” refers to your pump’s port size, not the diaphragm itself. To get the right part the first time, check these four things:- Overall diameter, measured straight across the full diaphragm.
- Bolt-hole pattern: count the holes and measure the spacing center to center. Note any “no-hole” style, like the AMT TPE version.
- Center mounting hole or stud opening diameter.
- Pump make and model, such as CH&E 5400, Magnum MCP6400, AMT 336, or Tsurumi TD5-200.
Pumps We Fit
We supply 2-inch diaphragms for every major manufacturer, including CH&E, AMT, Generac Magnum, Mud Hog, Wacker Neuson, Gorman-Rupp, Multiquip, Riverside, and Tsurumi. For Magnum owners, our CH&E and Magnum diaphragms cover the popular trash and water pump models. Do not see your brand? Reach out and we will cross-reference it.Why Buy From Ken’s Distributing
- America’s water pump parts distributor since 1991.
- Authorized dealer for Franklin Electric, Monarch, CH&E, Generac Magnum, Red Lion, Little Giant, AMT, and Wacker Neuson.
- Most orders ship the same day to all 50 states and Canada.
- Diaphragms built to hold up under heavy jobsite abuse.
- Real people who know pumps and can confirm your fit by phone.
Bulk Orders and Contractor Pricing
Run a fleet or several crews? Set up a blanket order for your 2-inch diaphragms and lock in contractor pricing with scheduled fulfillment. That way a pump is never down waiting on a part. Ask our team about volume pricing when you request your quote.2-Inch Diaphragm Questions, Answered
How do I know if I need a 2-inch diaphragm?
The “2-inch” refers to your pump’s port or discharge size. Check the model plate or measure the discharge outlet. When in doubt, send us your make and model.What material should I choose?
For plain water, rubber or neoprene works well. For fuels and oils, choose Buna. For the longest life and the best chemical resistance, choose TPE.Do you carry parts for older or discontinued pumps?
Often, yes. We have supplied water pump parts since 1991. Send your model number and we will cross-reference it. You can also browse our Tsurumi TD5-200 diaphragms and other brand pages.How fast can I get my part?
Most orders ship the same day, nationwide and to Canada.Can I order in bulk?
Yes. We offer blanket orders and contractor pricing for shops and multi-crew operations.Get a Quote on Your 2-Inch Diaphragm
Tell us your pump brand, model, and material, and we will get you the right part fast. Fill out the quick form with your name, email, phone, and pump details, and our team will reply with pricing and availability. Prefer to talk it through? Call (303) 699-7845 or email kendisco@yahoo.com and we will confirm your fit on the spot.
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