Replacement B&B RV Gravity Water Inlet Hatch
Updated 12/08/2025 | Published 11/20/2025
Products Featured in This Question
Question:
2024 Keystone 5th wheel Cougar gravity fed water inlet with locking door.Water cap says BandB. 222.
asked by: Tom N
Expert Reply:
Hey Tom. The B&B 222 comes back to the Replacement B&B RV Twist-On Gravity Water Fill Cap With Strap item # BM56MR in black or item # BM29MR in polar white.
The caps mount on the B&B RV Gravity Water Inlet Hatch item # BM76MR in black or item # BM86MR in polar white. Both of these water inlet hatches measure 6-1/2" tall x 6" wide. They fit cutouts measuring 4-3/4" tall x 4-1/4" wide. They include a built in lock, key, and installation hardware.
What are the dimensions of your inlet hatch? We've got a couple more options if these don't fit.
You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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Product Page this Question was Asked From
B&B RV Gravity Water Inlet Hatch - 4-3/4" x 4-1/4" - Key Lock - Black
- RV Water Inlets
- Gravity Fill Inlet
- Flush Mount
- 1-1/2 Inch Deep
- Plastic
- Black
- B and B Molders
more information >
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on RV Water Inlets
Jerred H.
12/8/2025
Hey Tom, did the B&B gravity water inlet hatch end up matching the cutout on your Cougar? Your feedback could really help others trying to replace the same style inlet. Once you’ve checked the dimensions, I can help narrow down any other options if needed.