Permanent RV part identity

Atwood 91857 Drain Plug Kit

Name: Atwood 91857 Drain Plug Kit
Brand: Atwood / Dometic

Atwood / Dometic Part 91857

Atwood / Dometic 91857: Seals the water-heater tank drain opening and is removed for draining or winterization. Review manufacturer model references and current supplier availability on RVPartScan.

Atwood 91857 Drain Plug Kit — supplier product photo 1 — Supplier photo. Compare connectors, dimensions and the part number before ordering.

Atwood 91857 Drain Plug Kit — supplier product photo 2 — Supplier photo. Compare connectors, dimensions and the part number before ordering.

Also called: water heater drain plug, nylon drain plug, tank drain plug

Manufacturer part referenceService assembly1 recently verified listing2 suppliers with recorded evidenceLast checked Oct 14, 2026

Part number history

Supersession history

These number changes are shown only when RVPartScan has an explicit persisted replacement or supersession relationship. Older numbers redirect to this canonical part instead of creating duplicate part entities.

9156191857

91857 supersedes 91561.

Atwood GCH10A-4E parts-list mirror explicitly states 91561 PLUG,DRAIN 1/2 USE 91857.

Relationship source

Manufacturer model evidence

Models that reference this part number

Atwood / Dometic G6A-8E

Drain Plug Kit · diagram item 17

The G6A-8E parts list identifies item 17 as 1/2-inch plastic drain plug kit 91857.

Model reference source

Atwood / Dometic GC10A-4E

Drain Plug Kit · diagram item 29A

Callout 29A is the drain-plug location. Older reference 91561 is commonly replaced by drain-plug kit 91857.

Model reference source

Atwood / Dometic GCH10A-4E

Drain Plug Kit · diagram item 29A

Callout 29A is the drain-plug location. Older reference 91561 is commonly replaced by drain-plug kit 91857.

Model reference source

Supplier evidence

Availability observations for 91857

Supplier availability is observational data. It can disappear or become stale without changing this permanent part identity.

Dyers RVRecently verifiedChecked Oct 14, 2026

Atwood Water Heater 91857 1/2" Drain Plug

Condition: Not specified by supplier

$11.08

Supplier

United RV PartsVerify availabilityChecked Aug 31, 2026

Dometic | Atwood Water Heater Drain Plug | 91857 | 2 Pack | 1/2" NPT

Condition: Not specified by supplier

$9.99

Supplier

Confirm the part number, model and source documents before ordering. Check final price, condition and availability with the supplier.