WDI EcoFlush and PF/2 Energizer Retrofit Systems


WDI EcoFlush and PF/2 Energizer Retrofit Systems

Part Number: M-101526-F31K

Manufacturer Part Number: M-101526-F31K
UPC: 064871410665

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ Read 13 - 4.92 Star Reviews
In Stock
Lifetime Support

$212.76 $202.12 ON SALE


Free Shippping

Estimated Delivery:
1 working day process time + 3-5 Business Days

Product Description

WDI EcoFlush™ and PF/2 Energizer™ Replacement Systems

The M-101526-F31K Flushmate system includes the necessary hardware to retrofit into toilets with WDI EcoFlush B8100, B8104, B8106, B8106S, or PF/2 Energizer 150-403. Easy installation. Free Shipping.

Do you own a pressure assist toilet with a PF/2 Energizer or WDI EcoFlush system?

Consumers wanting to replace these products have the option to retrofit the Flushmate system into the same toilet. Flushmate is the world leader in pressure assist technology.

"I purchased the American Standard toilet and Ecoflush B8104 power vessel stop working after five months. Contact Ecoflush tech support almost impossible. No warranty support. Replace the Ecoflush with Flushmate and have no problem any more." ~ Alexanre Z.

The Flushmate M-101526-F31K 1.6 GPF Replacement System, is designed to retrofit into toilets containing the following brands:

  • PF/2 Energizer 150-403, 1.6 gpf System
  • WDI EcoFlush B8100 Series, Dualy Flush 1.6 / 1.1 gpf
  • WDI EcoFlush B8104 Series, 1.1 gpf
  • WDI EcoFlush B8106 Series, 1.6 gpf
  • WDI EcoFlush B8106S Series, 1.6 gpf

The Flushmate M-101526-F31K includes the Flushmate M-101526-F3 1.6 gpf complete system with a replacement universal handle kit, locknuts and gasket.

The Flushmate M-101526-F31K 1.6GPF Replacement system is designed to work with existing pressure assist toilets that were originally equiped with the PF/2 Enigizer 150-403 or WDI EcoFlush B8100, B8104, B8106 1.6 GPF systems.

Toilet Types


Two Piece Toilet
A two piece toilet is made of two separate pieces of vitreous china, a holding tank and a bowl. The holding tank is mounted on the bowl by the installer using washers, nuts and bolts. Two piece toilets are often called "close-coupled" in reference to this mounting system and are the most common toilets on the market. The Flushmate model number for this type of toilet always begins with M-101526.

Flushmate M-101526-F31K Replacement system Included:

The Flushmate M-101526-F31K 1.6 GPF Replacement System, includes

  • (1) M-101526-F3 Flushmate III 1.6 GPF Replacement System
  • (1) Universal Handle Kit
  • (1) Flushmate Tank to Toilet Tank Gasket (Gasket between Flushmate System and toilet tank)
  • (1) Flushmate Tank to Toilet Tank Locknut (Locknut to mount Flushmate System into the toilet tank)
  • (1) Flushmate Tank to Bowl Gasket (Gasket between toilet tank and toilet bowl)
  • (1) Flushmate Lower Supply Locknut (Locknut to mount Flushmate System into the toilet tank)
  • (1) Installation Instructions
  • Required Tools: Wrench, philips head screwdriver

    M-101526-F31K Flushmate Models:

    The Flushmate M-101526-F31K can retrofit into toilets with the following products. 

    • WDI EcoFlush B8100 Dual Flush 1.0/1.6 GPF
    • WDI EcoFlush B8104 1.1 GPF
    • WDI EcoFlush B8106 1.6 GPF 
    • WDI EcoFlush B8106S 1.6 GPF 
    • PF/2 Energizer 150-403

    Fixture Manufacturer Toilet Tank  Original System GPF
    American Standard 4142016 PF/2 150-403 1.6 GPF
    Crane 3612 PF/2 150-403 1.6 GPF
    Elijer 141-7000 PF/2 150-403 1.6 GPF
    Zurn EcoVantage PF/2 150-403 1.6 GPF
    Peerless Peerless 1 PF/2 150-403 1.6 GPF
    Zurn EcoVantage WDI  1.1/1.6 GPF
    American Standard 4142100 WDI  1.1/1.6 GPF
    Crane 31612 WDI  1.1/1.6 GPF
    Gerber  DF28-380 WDI  1.1/1.6 GPF
    Gerber EF28-380 WDI  1.1/1.6 GPF
    Mansfield  119 WDI  1.1/1.6 GPF
    Zurn  1.1 gpf Pressure Assist Tank WDI  1.1/1.6 GPF

    Manufacturer Information

    Eflushmate.com only sells Flushmate factory replacement products produced by Flushmate.

    The Flushmate M-101526-F31 1.6 GPF Replacement System includes a 5 year limited warranty.

  • M-101526-F31 Flushmate Complete Retrofit for WDI EcoFlush and PF/2 Energizer, 1.6 gpf (1)
  • A-119221-1 Locknut, Discharge Extension (1)
  • A-323288 Gasket, Tank/Tank (1)
  • B-103021 Locknut, Shank (1)
  • E-205288 Gasket, Tank/Bowl (1)
  • pending
Part Number: M-101526-F31K
Part Name: WDI EcoFlush and PF/2 Energizer Retrofit Systems
Brand: Flushmate
MPN: M-101526-F31K
Fits Porcelain Brands: American Standard , Briggs, Contrac, Corona , Crane Plumbing, Eljer , Exergis, Gerber , Glacier Bay, Kohler , KooHoo, Laufen , Mansfield , Niagara, Orion , Peerless , ProFlo, Seasons, St. Thomas Creations, Universal Rundle, Vitromex , Vortens/Lamosa , Western , Winfield, Zurn
Fits Toilet Type: Two-Piece
Fits Flushmate Series: 503
Fits Model Number: M-101526, M-101526-F, M-101526-F3
Gallons Per Flush: 1.6 gpf
Handle Location: Right-Hand, Left-Hand
Advanced Features:
Country of Origin: USA
Weight: 12
UPC: 064871410665

Verify this item will fit my product.

Use the Parts Finder on our Flushmate® Brand Website.

Use Parts Finder

Frequently Bought Together

Customer Reviews


Average Rating

★★★★★ Read 0 Review
★★★★★ ★★ Read 0 Review
★★★★★ ★★★ Read 0 Review
★★★★★ ★★★★ Read 1 Review
★★★★★ ★★★★★ Read 12 Reviews
Showing reviews for:
M-101526-F31K | WDI EcoFlush and PF/2 Energizer Retrofit Systems
Verified Buyer

Worked like a charm

Bill (CA) | January 30th, 2024

Our (very) old unit was leaking, so we ordered a replacement. Phone help was great and confirmed that we'd chosen the right part. Installed on Sunday and it's working great. We love the power of these units.

Replacement canister

Chuck (pa) | November 3rd, 2021

Was easy to install and is working well. A simple plumbing repair job.

PF/2 Energizer finally failed

Taylor Bennett (Georgia) | July 28th, 2021

DIY install. Flushmate product works flawlessly so far. Confidence is high. Elated that I did not have to purchase a new toilet,

Note From Store Owner: We appreciate your business, and we are so happy to have you as part of the Flushmate family! Thanks for sharing your awesome experience with us and for the 5-stars! Your review and satisfaction mean the world to us!

Replacement of old Flushmate

Michael T Indre (Minnesota) | April 19th, 2021

I have a plumber who is familiar with installation help and it was just fine.

Verified Buyer

PF/2 replacement

Fred Plott (MN) | April 16th, 2021

Easy 30 minute job. Great instructions. Love the new replacement.

Better than original

Jason (Ohio) | February 23rd, 2021

At first was confused. Ordered 31K but tank had only 31 on it. It was a replacement for another brand. But it fit easily and seamlessly. Definitely recommend the handle replacement kit. I have this system in all 3 of my bathrooms. Money well spent.

Verified Buyer

Wonderful Instructions!

Dennis Fregger (CA) | January 22nd, 2021

I was delighted (as a non-plumber and barely a handyman) to find that the replacement flushing unit I purchased from Flushmate only required very basic, common sense skills for its installation. And, the only non-intuitive part of the installation was accompanied by the best mini-instruction manual I have ever seen. The steps were clearly explained and illustrated. The installation went smoothly (without swearing or throwing anything!!) and the unit works beautifully! THANK YOU FLUSHMATE!!!

Converting regular ol toilet to power flush toilet

Jacob (GA) | November 16th, 2020

Hello, Will this product convert a standard toilet to a power flush toilet?

Note From Store Owner: Jacob, The Flushmate System requires a specially designed pressure-assist fixture and is not retrofitable to a gravity toilet. Flushmate is available with all the major toilet brands and available for home delivery ( https://www.eflushmate.com/category/Toilets.html ) or visit https://www.flushmate.com/distributors for local distributor.

Replacement pressure tank

Ryan (Iowa) | September 20th, 2020

Tech support was great, product installed easily and worked as stated. Sales team took a while to get back to me (room for improvement).

Verified Buyer


Jim Taucher (California) | April 19th, 2020

Easy to install, took a little over an hour and it's working perfectly.

Verified Buyer

Great Replacement

Robby (IL) | March 25th, 2020

I had a very positive experience with the company and product. I called because I was not sure the kit to replace my old system had everything I would need. A helpful engineer told me it did and transferred me to sales where I placed my order. The unit arrived two days later and was easy to install. This is a much better system that what we had previously and it is well engineered.

Verified Buyer


Sam Bailey (Iowa) | October 8th, 2019

It was as advertised. Really easy to install The instructions for attaching the handle were very good It took me an hour and a half to take the old tank out and install the new one

Leave a review!

Rate Product

Customer Q & A

Have a Question?

No Questions asked yet!