Ready to order
Dometic 5-Inch Duct Adapter Kit - Furnace Duct Connection - Part# 31388
Uses the existing quantity, variant, and delivery estimate
The Dometic 5-Inch Duct Adapter Kit - Furnace Duct Connection - Part# 31388 is for RV owners, mobile techs, and dealers replacing a Dometic service component by exact part number. Use this listing when your old part, appliance label, or Dometic parts diagram points to 31388; do not rely on appearance alone because many Dometic furnace, water-heater, AC, thermostat, and plumbing parts look similar but are not interchangeable.
Features & Specifications
- Brand: Dometic
- Part number / SKU: 31388
- Repair category: Dometic RV Furnace Service Parts
- # 31388
- Use for exact service-part replacement where your original component or parts list matches this listing
- Shopify shipping weight verified after the 2026 5 lb small-service-part update
Why Choose This Dometic Replacement Part?
Small Dometic service parts can be expensive mistakes when ordered by guesswork. This page keeps the manufacturer, part number, and visible listing facts front and center so you can match the failed component before checkout.
The trade-off is that this listing is intentionally narrow: it is not a universal repair part. If your model label, old part number, connection size, electrical rating, or kit contents do not match, choose the correct Dometic alternative instead of forcing this part into the repair.
Compare Dometic RV Furnace Service Parts
Use this table to compare nearby Dometic service parts from the same repair category. Always match the exact part number, appliance model label, connection size, electrical rating, color, or kit contents before ordering.
| Model / Part | Verified Listing Facts | Best For | View Details |
|---|---|---|---|
|
Dometic 5-Inch Duct Adapter Kit - Furnace Duct Connection - Part# 31388 Part 31388 |
# 31388 | Exact Dometic/Atwood furnace repairs | Current Product |
|
Dometic 4-Inch Furnace Duct Cover Plate - Fits Atwood & Dometic RV Furnaces - Part# 31371 Part 31371 |
# 31371 | Exact Dometic/Atwood furnace repairs | View Details |
|
Dometic 5 Amp Circuit Breaker - Furnace Overload Protection - Part# 30320 Part 30320 |
5 Amp, # 30320 | Exact Dometic/Atwood furnace repairs | View Details |
|
Dometic Furnace Exhaust Adapter - Fits DSF/CF Series - Part# 33172 Part 33172 |
# 33172 | Exact Dometic/Atwood furnace repairs | View Details |
Tip: Similar-looking Dometic service parts are often not interchangeable. If the old label or parts diagram does not match, keep comparing before you buy.
Technical Specifications
| Brand | Dometic |
| Product | Dometic 5-Inch Duct Adapter Kit - Furnace Duct Connection - Part# 31388 |
| Part Number / SKU | 31388 |
| Category | Dometic RV Furnace Service Parts |
| Shipping Weight | 5 lb |
What's Included
This listing includes the Dometic service part identified as 31388 in the product title. Additional screws, gaskets, wiring, sealant, fittings, controls, or installation hardware are included only when they are specifically shown or named in the listing.
Compatible Models & Alternatives
Match this part to your Dometic model label, parts diagram, or the number printed on the component being replaced. For broader browsing, compare more Dometic furnace parts and keep the old part number handy.
Typical companion checks include burner hardware, circuit protection, igniter leads, wiring harnesses, gas valves, duct adapters, and limit switches when your furnace diagnosis points to more than one failed component.
Frequently Asked Questions
How do I know this is the right Dometic service part?
Confirm the Dometic part number or SKU on your old part, appliance label, owner literature, or parts diagram. For this listing, the key number to match is 31388.
Is this part universal?
No. Treat it as an exact replacement part. Similar Dometic components may use different sizes, ratings, wiring, orientations, colors, or kit contents.
What should I check before ordering?
Check the full model label, old part number, visible connection size, electrical rating, color or finish, and whether your repair requires any extra gaskets, fasteners, sealant, or companion parts.
Does this include installation hardware?
Only when hardware is specifically named in the product title or shown as part of the kit. If your original fasteners or seals are damaged, plan to source matching replacements separately.
What if my old part number is different?
Do not assume it supersedes to this part without confirmation. Use AI Live Chat with a clear label photo and the old part number before ordering.
Why Buy from Elkhart RV Parts?
Elkhart RV Parts focuses on hard-to-find RV replacement parts with clear part-number matching, practical repair context, and fast access to Dometic service parts for owners, dealers, and technicians.
| Product_name | Dometic 5-Inch Duct Adapter Kit |
|---|---|
| Part_number | 31388 |
| Manufacturer | Dometic |
| Product_type | Duct Adapter Kit |
| Category | Furnace Service Part |
| Duct_size | 5-inch |
| Part_classification | OEM |
| Compatibility | Dometic FOR series furnaces |
| Use_cases | Furnace installationFurnace repairDuctwork modifications |
| Application | RV furnace ductwork connection |
| Product_status | New Arrival |
Ready to order
Dometic 5-Inch Duct Adapter Kit - Furnace Duct Connection - Part# 31388
Uses the existing quantity, variant, and delivery estimate
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.