---
title: "Dometic Toilet Parts — $65K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/dometic-toilet-parts"
last_updated: "2026-08-10T23:14:35.709Z"
locale: en
meta:
description: "Niche score 65/100 · $65K/yr market · 63K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 65/100 · $65K/yr market · 63K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Dometic Toilet Parts — $65K/yr Amazon US Niche (2026) - Flapen"
---
# **dometic toilet parts**
**Worth a look**
Shows a sweet-spot price point ($20.21 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 16Growth 73Conversion 60Competition 69Returns 86Price range 81Avg price 88Brand share 75Review moat 74Quality gap 67
**Avg price**
**Great****$20.21**
avg listing price — sweet spot $15–$100
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Price range**
**Great****$8.58–$46.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****60%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Good****522.55**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Good****+56.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****44%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$65K**
$65K/yr · 63K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, dometic toilet parts is a $65K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in May–Jul–Aug–Sep. Verdict: Worth a look — 65/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dometic toilet parts market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$61K–$81K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#95**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **30 months**
- **Avg seller age**
- **155 days**
## **Competition & brand share**
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▼falling
**Sellers**
**103**
**Top-5 brand share**
**60%**
Top 20: 98%
**Top-5 click share**
**44%**
Top 20: 89%
**Open market**
**34%**
- Rakiyada18% - Vypart17% - Dometic10% - Halotronics9% - FORZEEY6% - Beech Lane6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +56.4% search growth over the last 90 days.
6K4KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jul, Aug, Sep · busiest ÷ quietest = 5.6×
[**Open Trend **](https://flapen.com/research/us/automotive/dometic-toilet-parts/trend)
## **Top dometic toilet parts search terms**
- **dometic 310 toilet parts**17K/yr+28.7%5.0% conv. - **dometic toilet parts**11K/yr+67.9%3.8% conv. - **dometic rv toilet parts**12K/yr+61.3%5.1% conv. - **dometic 310 rv toilet parts**6K/yr+76.1%5.3% conv. - **camper toilet parts**5K/yr+67.9%3.8% conv. - **rv toilet repair kit**5K/yr+99.3%3.3% conv. - **dometic 300 toilet parts**6K/yr+39.9%7.0% conv. [**All search terms **](https://flapen.com/research/us/automotive/dometic-toilet-parts/search-terms)
## **Top dometic toilet parts products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%$3K8%$5K12%$8K16%$10K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rakiyada Upgraded RV Toilet Valve Replacement Kit Compatible with Dometic 300 310 320 400 410 420 385311641 Dometic RV Toilet Parts with 385311658 Toilet Seal for Pedal-Flush Toilets**Rakiyada**$18.34**4.4★155 rev](https://www.amazon.com/dp/B0FDGM6SB1) [2**385311641 RV Toilet Valve Replacement Kit for Dometic 300|301|310|311|320|321 Pedal Flush Toilets -Freeze-Resistant Flush Camper Toilet Valve Parts with 385311658 Toilet Seal**Vypart**$16.12**4.6★227 rev](https://www.amazon.com/dp/B0DM5FB961) [3**Halotronics Upgraded RV Water Valve Replacement Kit for Pedal-Flush Toilets Compatible with Sealand Dometic 300 301 310 311 320 321 (385311641) - Hardware Included 2024 Model**Halotronics**$10.15**4.6★3,524 rev](https://www.amazon.com/dp/B084HN12PS) [4**FORZEEY RV Toilet Foot Pedal Replacement fit for Dometic 300 310 320 321 Series Toilet Durable Injection Molded Compatible with Dometic RV Toilet Parts**FORZEEY**$29.92**4.5★69 rev](https://www.amazon.com/dp/B0F62146L8) [5**Beech Lane Upgraded Water Valve Kit Replaces 385311641 for Dometic Toilets 300 310 and 320 Increased Freeze Resistance Long Valve Lifespan Ultrasonic Sealing Safeguards Against Leaks (Natural)**Beech Lane**$19.26**4.5★3,070 rev](https://www.amazon.com/dp/B09P1WXMTW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**RV Toilet Seal Kit Replacement for Dometic 300 310 320 RV Toilet Parts Includes 385311652 Base Seal & 385311658 Flush Ball Seal with Mounting Hardware RV Toilet Replacement Parts for Camper Trailer**TeegRoow**$14.35**6 rev3mo ago](https://www.amazon.com/dp/B0GSRQK1S4) [**RV Toilet Seal and 3 Socket Floor Flange Kit for Dometic 300 310 320 Toilet Replacement Parts 385345892 RV Toilet Flange 385311658 Flush Ball Seal and 385311652 Base Seal Gasket 3-in-1 Repair Kit**TeegRoow**$23.37**20 rev8mo ago](https://www.amazon.com/dp/B0G1KNZDYX) [**Upgraded RV Water Valve Repair Kit for Pedal Flush Toilets Compatible with Sealand Dometic 300 301 310 311 320 321 Freeze-Resistant Materials Replacement Number 385311641**BUWTIQ**$18.11**35 rev10mo ago](https://www.amazon.com/dp/B0FHKN4L35) [**Rakiyada RV Toilet Seal Kit Compatible with Dometic 300 310 320 400 410 420 RV Toilet Parts Replacement for 385311658 Toilet Flush Seal and 385311652 Toilet Base Seal**Rakiyada**$14.54**59 rev1y ago](https://www.amazon.com/dp/B0FDQDY3BW) [**Rakiyada Upgraded RV Toilet Valve Replacement Kit Compatible with Dometic 300 310 320 400 410 420 385311641 Dometic RV Toilet Parts with 385311658 Toilet Seal for Pedal-Flush Toilets**Rakiyada**$18.34**155 rev1y ago](https://www.amazon.com/dp/B0FDGM6SB1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RV Toilet Seal Kit Replacement for Dometic 300 310 320 RV Toilet Parts Includes 385311652 Base Seal & 385311658 Flush Ball Seal with Mounting Hardware RV Toilet Replacement Parts for Camper Trailer**TeegRoow**$14.35**4.1★**▲ 212%**](https://www.amazon.com/dp/B0GSRQK1S4) [**Aecsze 2 Pack 385311641 RV Toilet Water Valve Replacement Kit Durable Plastic Water Valve Kit for 300 310 320 Series for Dometic and Sealand Marine Toilet Includes Hose Clamp and Fasteners**Aecsze**$16.15**4.2★**▲ 172%**](https://www.amazon.com/dp/B0D9K2GTNJ) [**Upgraded RV Water Valve Repair Kit for Pedal Flush Toilets Compatible with Sealand Dometic 300 301 310 311 320 321 Freeze-Resistant Materials Replacement Number 385311641**BUWTIQ**$18.11**4.6★**▲ 121%**](https://www.amazon.com/dp/B0FHKN4L35) [**RV Toilet Seal and 3 Socket Floor Flange Kit for Dometic 300 310 320 Toilet Replacement Parts 385345892 RV Toilet Flange 385311658 Flush Ball Seal and 385311652 Base Seal Gasket 3-in-1 Repair Kit**TeegRoow**$23.37**4.8★**▲ 93%**](https://www.amazon.com/dp/B0G1KNZDYX) [**Rakiyada RV Toilet Seal Kit Compatible with Dometic 300 310 320 400 410 420 RV Toilet Parts Replacement for 385311658 Toilet Flush Seal and 385311652 Toilet Base Seal**Rakiyada**$14.54**4.7★**▲ 65%**](https://www.amazon.com/dp/B0FDQDY3BW)
**~~View all trending →~~**
## **What buyers say about dometic toilet parts**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“Exact fit”*
**Assembly/Installation**12%
*“Easy enough to install”*
**Leak-Proof**11%
*“Does NOT leak”*
**Quality-Overall**10%
*“Excellent product”*
**Efficiency**7%
*“Used on rv toilet worked great”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Value For Money**7%
*“Great value”*
**Maintenance And Repair**3%
*“321 repair. perfect replacement”*
**Ease Of Use**3%
*“Easy to use”*
**Durability**1%
*“Very durable”*
### **What buyers complain about **
**Leak-Proof**31%
*“Leaking”*
**Quality-Overall**10%
*“Inconsistent quality”*
**Functionality-Overall**5%
*“Did not work”*
**Value For Money**5%
*“Are these expensive”*
**Durability**5%
*“Failed within one month”*
**Water Resistance**4%
*“letts water seep thru”*
**Thickness**4%
*“rubber gasket is way too thick”*
**Compatibility-Overall**4%
*“Commode part not compatible”*
**Size-Overall**3%
*“Flags was too big”*
**Assembly/Installation**3%
*“Kinda tricky to install”*
### **Top return reasons **
**Size-Overall**36%
**Leak-Proof**19%
**Compatibility-Overall**14%
**Defective Material/Parts**10%
**Functionality-Overall**5%
**Advertised Vs Actual Product**5%
**Value For Money**2%
**Assembly/Installation**1%
**Maintenance And Repair**1%
**Quality-Overall**1%
## **Common questions**
- **Is dometic toilet parts profitable to sell on Amazon United States?**
- The niche generates $65K/yr across 31 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is +56.4%. Flapen's verdict: Worth a look (65/100).
- **How competitive is the dometic toilet parts niche?**
- 23 brands and 103 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 60% of demand.
- **What do buyers complain about in dometic toilet parts?**
- Top complaints mined from reviews: Leak-Proof, Quality-Overall, Functionality-Overall. The return rate is 1.5%.
- **When does demand for dometic toilet parts peak?**
- Demand peaks in May–Jul–Aug–Sep; the busiest month runs 5.6× the quietest.
- **What does it cost to enter the dometic toilet parts niche?**
- Listings span $8.58–$46.22; the average listing price is $20.21 (sweet spot $15–$100). The average incumbent carries 523 reviews — the moat a new listing must climb.
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