Delta®
Soap / Lotion Dispenser - Pump Assembly
Model#:
RP21908
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PRODUCT FEATURES
Documents & Specs
Installation Information
Overall Height (in.) :
8-5/8
Valve Type:
NA
REVIEWS
Rated 1 out of
5
by
Anonymous from
stay away
I bought my faucet in 2010, and the soap dispenser is the same part number, but the current part top is too large for the dispenser top, and the stem is too short for the soap bottle. It does not seat properly in the body assembly.
Date published: 2026-06-12
Rated 1 out of
5
by
Texas Joe from
no soap
We have had our soap dispenser for 1 1/2 years, and it has almost quit dispensing soap located on our kitchen sink. We have to pump it several times to get enough soap to hand wash dishes in the sink. Now i have to purchase a new pump or change brands of Despensers.
Date published: 2026-03-28
Rated 1 out of
5
by
MikeI from
Soap dispenser replacement pump doesn’t fit
Unfortunately, this soap dispenser pump does not fit my dispenser. The diameter of the pump tube is too large for the base of my pump handle and the tube is about 2-3” too short.
Date published: 2026-01-13
Rated 1 out of
5
by
MikeI from
Shipment lost?
I would like to give y’all a 5 star rating but I have noy received the product?
Date published: 2026-01-11
Rated 1 out of
5
by
Scott from
Doesn’t fit
Doesn’t fit! Gotta buy the entire stinking thing now.
My old one is only 2 years old! B
Date published: 2025-11-08
Rated 2 out of
5
by
LH777 from
Don't last very long
I find that I have to replace the pump about every 2 years because they seize up and won't pump anymore. It's funny, I have cheap soap bottles with pumps that I refill and reuse for other things that are going strong after 15 years. Surely it could be made with parts that hold up longer?
Date published: 2025-02-04
Rated 1 out of
5
by
Longtime Homeowner from
Does Not Fit and Can't be Returned!
I purchased this to fit my Delta soap dispenser in this photo. It doesn't fit and due to their Return Policy that only allows you to return items that cost at least $15 it can't even be returned.
Date published: 2024-06-09
Rated 1 out of
5
by
none from
Poor service!
Doesn't fit my Despencer! I have had nothing but bad luck dealing with Delta on
line ordering. The parts never fit, and when I return them, I never get reimbursed.
Date published: 2022-10-28
Q&A
Soap pump
Will this product fit for Soap / Lotion Dispenser
Model#: RP50781
Dear Elkie,
Thank you for your inquiry! The Delta Soap / Lotion Dispenser Pump RP21908 is not designed to work with the Delta Soap/Lotion Dispenser RP50781. The Delta Soap/Lotion Pump RP47888 is the right replacement part, this includes the pump and the bottle.
Best regards,
Tanya
Date published: 2017-04-29
Does the soap dispensor pump head RP21908 fit the Cassidy single hand kitchen faucet?
Hi, Thank you for contacting us.
We apologize for any inconvenience. We are more than happy to help you.
To better assist you, we would like to gather some more information first. Could you please provide your full name, address, phone number, model of faucet and date of installation.
Please contact us at 1-800-345-3358 if you have any further concerns. We are open Monday through Friday 7:00 AM to 7:00 PM central time, and 8:00 AM to 5:00 PM on Saturday.
Best Regards,
Bethany
Date published: 2024-03-28
what soap dispenser pump will go with 39346, Models 172 - 178?
Dear Grandma Jo,
Thank you for your question. The RP21908 Delta Soap/Lotion Dispenser Pump is the correct assembly for the Delta Waterfall Collection models 172-178. Please see the parts diagram, below.
https://media.deltafaucet.com/PartsDiagram/Models_172_174_RevB.pdf
Best regards,
Tanya
Date published: 2017-05-02
will this work with RP50813AR?
Hello Fritz,
Thank you for your review on the Delta Soap / Lotion Dispenser Pump Head. I will be more than happy to assist you. Yes, this will work on soap dispenser model number RP50813AR. If you need anything further please contact us by calling 800-345-3358.
Thanks,
Sarah
Consumer Care
Delta Faucet Company
Date published: 2017-09-09
I have a Delta soap dispenser that was purchased in 1985. No idea of the model number. The pump head is broken. It looks very similar to the 21908. Any chance it would fit?
Hi, Thank you for contacting us.
We apologize for any inconvenience. We are more than happy to help you.
To place an order for you, we would like to gather some more information first. Could you please provide your full name, address, phone number, and date of install.
Please contact us at 1-800-345-3358 if you have any further concerns. We are open Monday through Friday 7:00 AM to 7:00 PM central time, and 8:00 AM to 5:00 PM on Saturday.
Best Regards,
Bethany
Date published: 2024-03-28
What is the warrenty time on this product? I have 2 dispensers not pumping correctly. They are 4 yrs. old.
Hello Sherri14,
Thank you for your question regarding the Delta Soap / Lotion Dispenser Pump Head.
I am very sorry to hear that your soap dispensers are no longer pumping properly and I apologize for the inconvenience this has caused.
I am happy to help you today.
If you could please respond back to the email I sent to you regarding this matter or if you prefer to discuss this issue further over the phone with us, please do not hesitate to give us a call on our warranty line at 800-345-3358 and we will be happy to help you with resolving this issue.
We hope to hear back from you soon!
Thank you,
Brandy
Date published: 2024-03-28
Does this part fit all Delta soap dispensers? I am looking for a new pump that goes with the Savile faucet.
Hi,
Thank you for your question. The Delta Savile Soap dispenser uses the RP47888.
Best regards,
Brandis
Date published: 2024-03-28
will this fit the RP1002
Hello kg10038,
Thank you for your question regarding the Delta Soap / Lotion Dispenser - Pump Head and I am happy to help you today.
The replacement pump that will fit with soap dispenser, model RP1002 is RP47888, which includes a pump and bottle.
Please do not hesitate to give us a call on our warranty line at 800-345-3358 if we can assist you with anything going forward.
Thank you,
Brandy
Date published: 2024-03-28
this pump RP 219081 work with RP50781SP
badly needs the kind of pumps
enclose a picture
thanks for your quick response
Hi Cezar,
Thank you for your question! The correct pump assembly for the RP50781SP is RP47888.
http://www.deltafaucet.com/repairparts/details/rp47888.html?showPhotoGallery=false
Thanks,
Jon
Date published: 2024-03-28
My soap dospenser pump spring will not lift the head after the first pump?! I have soaked the assembly in hot water. The head & supply tube are clog-free. Please provide guidance on how to dissable the spring assembly to repair. Thx
Hello Clayto3,
Thank you for your question regarding the Delta Soap / Lotion Dispenser - Pump Head and I am happy to assist you today.
Unfortunately, the pump mechanism is a non-repairable part and we do not advise taking it apart as it will be very difficult to put back together, although if you refer to the email I sent to you regarding this issue, I will be happy to assist you further where I can.
I look forward to hearing back from you!
Thank you,
Brandy
Date published: 2024-03-28
My Delta faucet is about four years old. The assembly is so clogged. I can’t get it to work even after soaking and cleaning it’s still clogged. I’ve tried to order an assembly online from Amazon and though it said Delta, it doesn’t fit is this a guarantee
Hello,
Please accept our sincere apology for the inconvenience you are experiencing. We have reached out to you via email to further assist at this time.
Best Regards,
Tim
Digital Communications Specialist
Date published: 2025-09-19
what soap pump will go with facet model # 1993 sssd dst
Hi, tomh!
Thank you for your question. The soap pump assembly for the soap dispenser for Delta 19933-SSSD-DST is RP47888. Here is a link to this part:
https://www.deltafaucet.com/parts-product-detail?modelNumber=RP47888
Best Regards,
Rosanna
Date published: 2024-03-28
Will this work with Delta RP50781SS. ?
Dear Fran,
Thank you for your inquiry! The Delta Soap Pump and Bottle RP47888 is the correct pump assembly for the Delta Soap/Lotion Dispenser RP50781SS.
Best regards,
Tanya
Date published: 2024-03-28
what is the measurement in lenght?
Hi, Barbara!
Thank you for your question. The Delta RP21908 Soap Pump is 6 inches in length.
Best Regards,
Rosanna
Date published: 2024-03-28
Hi, will this fit faucet 19949-SSSD-DST
Hi, Bob G!
Thank you for your question. The soap dispenser model that is included with the 19949-SSSD-DST Faucet is RP50781SS. The correct soap pump for this soap dispenser is RP47888. Here is a link to this part:
https://www.deltafaucet.com/product-detail/RP47888
Best Regards, Rosanna
Date published: 2024-03-28
What is the model number for the soap/lotion dispenser pump head for 4353-SSSD-DST LINDEN faucet ?
Hi, Alfred!
Thank you for your question. The Delta 4353-SSSD-DST faucet includes the Delta RP50781SS soap dispenser. The soap dispenser uses the RP47888 pump assembly. Here is a link to this part:
https://www.deltafaucet.com/parts-product-detail?modelNumber=RP47888
Best Regards,
Rosanna
Date published: 2024-03-28
Is the pump part RP21908 the correct one to use with dispenser RP 71543?
Thank you for your question, PaulK! That part number will not work with for model RP71543. The correct replacement part number for the pump (which includes the bottle) is RP47888.
https://www.deltafaucet.com/parts-product-detail?modelNumber=RP47888
Best regards, Edward
Date published: 2024-03-28
Is this pump a replacement for use with rp50813ar, Leland model soap dispenser?
Hello Jim Murray,
Thank you for your question on the Delta Soap / Lotion Dispenser - Pump Head. I will be happy to assist you today.
Unfortunately, for soap dispenser model RP50813, there isn't a replacement pump assembly available at this time and I apologize for the inconvenience.
Please refer to the email that I have sent to you regarding this matter or, if you would rather discuss this over the phone, feel free to give us a call on our warranty line at 800-345-3358 and we will be happy to assist you in any way that we can.
Thank you,
Matthew
Delta Faucet Company
Consumer Care
Date published: 2024-03-28
Will this work with the Savile 19949F soap dispenser?
Hello Linda,
Thank you for your question regarding the Delta Replacement Pump Head for Soap / Lotion Dispensers and I am happy to help you today.
The soap dispenser, model RP50781, which is paired with the kitchen faucet, model 19949F, will require a replacement pump, RP47888, which includes a bottle.
I hope this is helpful and if there is anything going forward that we may be able to help with, please do not hesitate to give us a call on our warranty line at 800-345-3358 and we will be happy to help you where we can.
Thank you,
Brandy
Date published: 2024-03-28
would this work with RP44651?
Hi Samuel, Thank you for your question!
The rp21908 pump will not work with the rp44651 soap dispenser. You will need to order the rp47888 pump w/bottle.
Best regards,
Brandis
Date published: 2024-03-28
Will assembly RP21908 work with Dispenser RP50781
Hi, Triggerplz!
Thank you for your question. The pump assembly for the Delta RP50781 soap dispenser is RP47888.
Best Regards,
Rosanna
Date published: 2024-03-28
What's the difference between RP21908 and PR47888?
My soap dispenser is about 10 years old.
Thank you for your question. Delta Faucet models # RP21908 and RP47888 are diferent, and they are used on different soap dispensers. It appears that the biggest difference is the shape of the bottle.
Date published: 2024-03-28
Will this fit RP49302SS
I need to which pump fits RP49302SS. Why don't you just list the what fits what?
Dear Danny,
Thank you for your question. The Delta RP47888 is the correct pump assembly for the Delta Soap dispenser RP49302SS.
Best regards,
Tanya
Date published: 2017-02-11
Can you tell me if this would work for the soap dispenser that matches the Delta Leland faucet?
Hi, Jen23!
Thank you for your question. The Delta RP47888 is the pump that fits the Delta Leland RP50813 Soap Dispenser. Here is a link to the pump:
https://www.deltafaucet.com/parts-product-detail?modelNumber=RP47888
Best Regards,
Rosanna
Date published: 2024-03-28
i bought a delta Allentown single-handle kitchen faucet model #19935L-SPSD-DST. The faucet came with a soap dispenser. Does anyone know the part number for the pump?
Hi, Thank you for contacting us.
We apologize for any inconvenience. We are more than happy to help you.
To better assist you, we would like to gather some more information first. Could you please provide your full name, address, phone number, and date of install.
Please contact us at 1-800-345-3358 if you have any further concerns. We are open Monday through Friday 7:00 AM to 7:00 PM central time, and 8:00 AM to 5:00 PM on Saturday.
Best Regards,
Bethany
Date published: 2024-03-28
Will this kit work with the Briza Talo soap dispenser RP50274?
I have the Brizo Talo soap dispenser in brushed nickel and the dispenser started to put out only small amount of soap. I have cleaned the dispenser but with no luck. It appears I need a new pump portion. Will this product work with my dispenser. If not can you point me to the proper item number.
Thanks, Bill Ziegler
Hi Bill, Thank you for your question!
You will need the RP42881 pump for the RP50274 soap dispenser.
Best regards,
Brandis
Date published: 2024-03-28
Delta Zalia soap dispenser pump replacement?
Hello Customer!
Thank you for your question and we are happy to help. The correct part for the Delta Zalia soap dispenser pump is RP47888. With any further questions or concerns, please do not hesitate to reach out to us again.
Best Regards,
Carrie
Date published: 2025-03-11
Does this fit all Delta kitchen faucet soap dispensers. I do not have a model number.
Hello Trish,
Thank you for contacting Delta Faucet Company! I am sorry this information was not readily available; however, I am happy to help you.
Our soap dispensers use either the Delta Faucet Soap / Lotion Dispenser - Pump Head, model RP21908 or RP42881.
Please contact us with any questions or for further assistance.
Thank you for being a loyal Delta Faucet customer.
Best Regards,
Emma
Date published: 2024-03-28
We have model 11946-SSSD-DST, which do we need? Thanks, Scott
Hello Customer!
Thank you for your question and we are happy to help! The Delta 11946-SSSD-DST uses the RP21908 pump. With any further questions or concerns, please do not hesitate to reach out to us again.
Best Regards,
Carrie
Date published: 2025-10-15
What does the pump head assembly diagram look like?
Hello leoy,
Thank you for contacting us, I would be happy to help you.
The RP21908 pump belongs to soap dispenser model RP1001, please see diagram below.
https://media.deltafaucet.com/MandI/32229_v1.pdf
Please contact us back if you have any questions or need further assistance.
Best Regards,
Nicole
Date published: 2024-03-28
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This online price is exclusive to DeltaFaucet.com. The list price may be shown on products offered outside of the Outlet section on DeltaFaucet.com. Strikethrough pricing may be used to show discounts.