Delta®

Soap / Lotion Dispenser - Pump Assembly

Model#: RP21908
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Delta®
Soap / Lotion Dispenser - Pump Assembly
Model#: RP21908
List Price: $17.10
Online Price: $13.68
Free Ground Shipping All Orders $49+
Add to Favorites
Find local Delta® installers
PRODUCT FEATURES
Documents & Specs
Installation Information
Overall Height (in.) :
8-5/8
Valve Type:
NA
REVIEWS
Rated 1 out of 5 by 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 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 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 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 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 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 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 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
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Q&A

Are all delta kitchen soap dispensers the same?

Asked by: David
Hi David, Thank you for your question about the Delta Faucet RP21908. This pump is not used by all Delta Faucet soap dispensers. See the parts diagram for the faucet or soap dispenser for available replacement parts. Please contact us directly if you have any additional questions! Best Regards, Bryan Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

Is the pump section about 4 inches long? And will it fit into a 7/8 inch diameter countertop dish soap hole?

Asked by: Sandy
Hi Valued Customer, Thank you for your question. The Delta RP21908 Soap Pump is 6 inches in length. This mounts in standard hole sizes 1 1/4" - 1 1/2". Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist
Answered by: Themar
Date published: 2025-10-31

Will this fit Delta Faucet Soap Dispenser 8050785 Arctic Stainless? 

Asked by: JM507
Hi JM507, Thank you so much for contacting Delta Faucet Company! We will need more information to better assist you. Please send us an email at customerservice@deltafaucet.com. Best Regards, Skyler Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

Does this fit the Broderick RP100632AR soap dispenser? 

Asked by: Phil
Hi Phil, thank you for your interest in the RP21908! Unfortunately, the correct pump is RP83779. Please refer to the parts break down below. https://media.deltafaucet.com/PartsDiagram/DPD-K-9690-DST%20Rev%20C.pdf Please contact us directly if you have any questions or need additional assistance. Best Regards, Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

Hello, will this work with the Talbott 16997-SSSD-DST soap dispenser? Thank you.

Asked by: Shomel
Hello Shomel, Thank you for your question! We will be happy to help you today! The Delta 16997-SSSD-DST soap dispenser pump part number is RP47888. It will include the bottle and pump. I have included the link to the parts diagram to assist you further. https://media.deltafaucet.com/PartsDiagram/DPD-K-16997-SD-DST.pdf Please contact us back for any further questions. Best Regards, Renna
Answered by: Delta7
Date published: 2024-03-28

I purchased part no. RP21908 and the head of the pump assembly was too big to fit into my delta soap dispenser. Is there an assembly that has a slightly smaller diameter pump head that will fit my soap dispenser?

Asked by: Timothy
Hi Timothy, Thank you for your question about the Delta Faucet RP21908. I apologize that this pump does not fit your soap dispenser, we are happy to help! Other pump part numbers include: RP47888 RP42881 RP83779 To identify the replacement pump needed, I recommend the parts & accessories diagram document on the product page for your soap dispenser model. https://www.deltafaucet.com/kitchen/accessories/soap-dispensers Please reach out for further assistance or with any additional questions! Best Regards, Bryan Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-04-29

Does this have a spring inside? I have no idea of the brand of my currently broken soap dispenser, but this looks similar enough that I might just order it. My other option is to try to glue the snapped parts.

Asked by: John

will a new pump stop soap from coming out over the counter.under the handle

Asked by: yorky
Hello Customer! Thank you for your question and we are happy to help. The Delta RP21908 may resolve this issue. Please contact us directly for further assistance. Best Regards, Carrie
Answered by: Customer Service
Date published: 2024-02-15

Will this work with RP44651SP?

Asked by: SoapDispenserMechanic
Thank you for your question, SoapDispenserMechanic! No, the RP21908 pump is not the correct one for the RP44651SP soap dispenser. The correct part number for the RP44651SP soap pump is RP47888. Best Regards, Benjamin
Answered by: Benjamin
Date published: 2024-03-28

How long is the plastic tube?

Asked by: Nan83
Hello! The RP21908 pump is 9" in length. Please reach out with further questions! Best Regards, Tim Digital Communications Specialist
Answered by: Digital Specialist
Date published: 2026-09-04

Our soap dispenser pumps has stopped working and we'd like to replace it. The tube is a bit less than 3/8' diameter and the pump assembly, less the brushed stainless steel head, is about 11" long. Will this pump fit it?

Asked by: Carol
Hi Carol, Thank you for your review of your RP21908. We are happy to assist you! We have reached out to you directly via email in regards to this matter. We look forward to better serving you in the future. Please contact us directly with any further questions. Best Regards, Themar Digital Engagement Specialist
Answered by: Customer Service
Date published: 2024-03-28

What are the dimensions of this pump?

Asked by: barney
Hello Customer! Thank you for your question and we are happy to help. The Delta RP21908 height is 8-5/8. With any further questions or concerns, please do not hesitate to reach out to us again. Best Regards, Carrie
Answered by: Digital Specialist
Date published: 2026-04-30

What model soap dispenser will this replace? Mine current one is not working well.  

Asked by: Jane
Hi Jane, Thank you for your question about the Delta Faucet RP21908 replacement pump. This is used by RP37039, RP1001, RP38671, and RP49589. Other soap dispensers may use a different pump part number. To first troubleshoot an issue with the pump, I recommend carefully soaking the head and pump in warm water. After soaking, connect the head to the pump. Place the straw end into a cup of clean, warm water and activate the pump to rinse the components out. Please reach out for further assistance or with any additional questions! Best Regards, Bryan Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-11-19

My pump portion of soap dispenser measures 11 1/2 inches. I do not know the model number. What pump portion should I order.?

Asked by: Army John

Does this pump work with soap dispenser head 21905?

Asked by: Julie
Hello, Thank you for your question! Yes, that is the correct pump. Please reach out with further questions! Best Regards, Tim Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-10-28

I looking forward a replacement pump. Home Depot where I bought the Delta spoap unit does not carry the correct replacement pump

Asked by: John t

Mine broke and the spring popped out and now missing. Does this have the spring in it?

Asked by: Emmanuel

My soap dispenser won’t pump, so I purchased a new pump & bottle from you.  Do I manually pull the old pump off of the stainless steel head, or is there some trick to removing it?  It won’t come off, and I’m afraid that I will break it.

Asked by: Karen
Hi Karen, Thanks so much for contacting Delta Faucet Company about RP21908! I have included the installation guide below for the soap dispenser to assist with the replacement. https://media.deltafaucet.com/MandI/32229%20Rev%20B.pdf Please contact us directly if you have any questions or need additional assistance. Best Regards, Nicole Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-02-13

I have a 93623 model and the soap dispenser has come apart and needs to be replaced. Do you offer a replacement soap dispenser for that model

Asked by: john T

What is the total length of the pump?

Asked by: Bob40
Hello Bob40, Thank you for contacting us, I would be happy to help you. The Delta RP21908 Soap Pump is 6 inches in length. Please contact us back if you have any questions or need further assistance.  Best Regards,  Nicole
Answered by: Delta7
Date published: 2024-03-28

does this pump fit in all delta soap dispensers

Asked by: Anonymous
Hi Valued Customer, Thank you for your question! The RP21908 will not work with all soap dispenser. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Themar
Date published: 2025-06-24

I have a Soap Dispenser MODEL#: RP37039SS which replacement pump fits. I tried # RP47888, It does not fit.

Asked by: Ed Davison
Hello Ed Davidson, Thank you for your question, I would be happy to help you. The RP37039SS soap dispenser takes RP21908 soap pump. Please contact us back for any further questions or concerns. Best Regards, Nicole
Answered by: Delta7
Date published: 2024-03-28

My soap dispenser spout is disintegrating.  Can I purchase a new spout with straw and pump attached?

Asked by: Lred
Hi Lred, 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
Answered by: Customer Service
Date published: 2024-04-10

This pump will fit a Delta Zalia dispenser? (Model RP71543)

Asked by: Kevin
Hi Kevin, thanks for your question regarding RP21908! RP71543 utilizes RP47888. Please feel free to contact us with any questions or for further assistance. Best Regards, Emma Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

I have an older faucet, soap pump combo and the pump is not pumping very well. Do I only need the pump assembly? I’d prefer to not replace the whole outfit. I don’t have a model number. I’d be happy to send a photo.

Asked by: Kelly
Hello Valued Customer, Thank you for contacting Delta Faucet Company! We apologize for the issues you are experiencing and we are happy to help! We have reached out to you directly to further assist you with this matter. We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-09-16

Can I just purchase the soap dispenser pump mechanism only (not the tube too). The full Pump assembly is your Model#: RP21908

Asked by: Joelm227
Hi Valued Customer, Thank you for your question regarding our Delta Faucet. Then pump is not available as a separate part for this model. Please feel free to contact us directly for technical information at 800-345-3358. We are available Monday through Friday from 8 a.m. to 8 p.m. and Saturdays from 9 a.m. to 6 p.m. Eastern Standard Time. Thank you for being a loyal Delta Faucet customer. Best Regards, Themar Digital Communications Specialist (800) 345-3358 customerservice@deltafaucet.com
Answered by: Themar
Date published: 2025-01-09

does this fit DRP71543

Asked by: Susan
Hello, Susan! Thank you for your question regarding our Delta Faucet DELTA® Soap / Lotion Dispenser - Pump Head MODEL#: RP21908. The correct pump is part number RP47888. Here is the link below. https://www.deltafaucet.com/parts/product/RP47888.html Thank you for being a loyal Delta customer. Please feel free to call, email, or message us on social if there is anything else you need. Best Regards, Themar
Answered by: Delta
Date published: 2024-03-28

Does this work with RP 1002 dispenser?

Asked by: Karen T
Hi Karen T, thank you for contacting Delta Faucet Company! Our RP1002 uses RP47888 soap pump and bottle. We appreciate your inquiry. Please reach out directly if you have further questions! Best Regards, Kyra Digital Communications Specialist
Answered by: Customer Service
Date published: 2024-03-28

what is hole opening size? I am looking for one that fits 5/8" diameter opening.

Asked by: nxstep1
Hello nxstep1, Thank you for contacting Delta Faucet Company! I am sorry this information was not readily available, and I am happy to help you! The diameter of our Delta Faucet DELTA® Soap / Lotion Dispenser - Pump Head MODEL#: RP21908 is 0.85", The hole size would depend on the actual soap dispenser body. Thank you for being a loyal Delta customer. Please contact us back for any further questions. Best Regards, Nicole
Answered by: Delta7
Date published: 2024-03-28

I have a Delta faucet with soap dispenser. It is just a couple years old. The soap dispenser has never worked properly and now will not work at all

Asked by: susan
Hello Susan! Thank you for your question and we are happy to help. We are sorry to hear about your experience. Please contact us directly for further assistance with your soap dispenser. Best Regards, Carrie
Answered by: Digital Specialist
Date published: 2026-05-13
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