will this pump fit the Moen dispenser model 3942BL?

I'm not sure. The pump did not fit the dispenser that came with our Bayhill CA87094SRS faucet. I called Moen 1-800-BUY-MOEN and they told me that the pumps are different for each model, and they sent us a replacement pump for FREE that fit our model. Your faucet and soap pump are guaranteed for as long as you own them, though they will ask if you are the original owner.

Does it work in Moen 3942?

Hello and thank you for your interest in Moen products. The Moen 139221 Soap Pump is not compatible with the 3942 soap dispenser. The 3942 soap dispenser will require the 344111 underdeck service kit for the replacement pump. If you have additional questions, please feel free to call us at 800-289-6636. Our business hours are 8:00 a.m.-7:00 p.m. Eastern Time Monday through Friday.

Is this part universal, or does it only fit a certain Moen dispenser?

It is not universal - though Moen does make several units that this pump fits. The best thing you can do is find the model number of your faucet/soap dispenser, look it up on Moen's site and compare the part numbers on the diagram of your unit.

Will this pump fit model series 87770?

I do not know. Check on the Moen website

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Moen 139221 Replacement Pump Assembly – Compatible with Moen 3914 Soap Dispenser Only – BPA-Free Plastic, Manual Insert, 11.75" L

Moen 139221 Replacement Pump Assembly – Compatible with Moen 3914 Soap Dispenser Only – BPA-Free Plastic, Manual Insert, 11.75" L

Product ID: 9389494

Details

Brand
Moen
Color
White
Material
Plastic
Material Type Free
BPA Free
Product Dimensions
11.75"L x 1"W

🧴Reliable liquid soap dispensing

♻️BPA-free safe plastic

⚙️Precision-fit for Moen 3914

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€ 41.88

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧼 Upgrade your soap station with precision and safety—because your countertop deserves the best!

SAFE SUSTAINABLE - Crafted from BPA-free plastic, ensuring your countertop stays toxin-free and eco-conscious.
TAILORED COMPATIBILITY - Engineered exclusively for Moen 3914 soap dispensers—no guesswork, just perfect fit.
MOENS TRUSTED DURABILITY - Backed by Moen’s legacy of quality, this pump delivers consistent performance day after day.
COMPACT LIGHTWEIGHT DESIGN - Slim profile and featherlight build keep your space sleek without bulk.
EFFORTLESS MANUAL INSTALLATION - No tools or suction mounts needed—snap it in and elevate your soap game instantly.

The Moen 139221 Replacement Pump Assembly is a genuine, BPA-free plastic pump designed exclusively for the Moen 3914 soap dispenser. It offers reliable manual soap dispensing with easy installation, compact dimensions, and Moen’s trusted durability, making it the perfect upgrade for your kitchen or bathroom countertop.

Specifications

ASIN	B009HELC2U
Best Sellers Rank	#214,942 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #450 in Bathroom Countertop Soap Dispensers
Brand Name	Moen
Color	White
Customer Reviews	3.9 3.9 out of 5 stars (273)
Global Trade Identification Number	00721866674951
Item Dimensions L x W x H	11.75"L x 1"W x 4"H
Item Type Name	Liquid Soap Dispenser Pump, Pump Only,
Item Weight	0.16 Pounds
Liquid Volume	355 Milliliters
Manufacturer	Moen Incorporated
Manufacturer Part Number	139221
Manufacturer Warranty Description	One year limited.
Material Type	Plastic
Material Type Free	BPA Free
Model Number	139221
Number of Items	1
Number of Sets	1
Shape	Soap
UPC	721866674951
Unit Count	1.0 Count

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