shower door replacement parts
Skip itPrices mostly outside the sweet spot ($4.60–$16.07) — this niche doesn't clear our bar today.
Review moat
Great223.08avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Competition
Great39%top-5 click share — an open shelf
Conversion
Good5.1%search→purchase rate — share of searches ending in a sale
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Returns
Bad5.0%return rate — above 5% kills the launch gate
Avg price
Bad$8.54avg listing price — sweet spot $15–$100
Growth
Bad-4.3%90-day search growth — must beat 0% to launch
Market size
Bad$58K$58K/yr · 133K searches
Price range
Bad$4.60–$16.07cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, shower door replacement parts is a $58K/yr Amazon United States market (133K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 44/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
shower door replacement parts market data
- Units sold / yr
- 6K–8K
- avg 100–250/product
- Revenue / yr
- $51K–$68K
- units × avg price
- Conversion rate
- 5.1%
- Avg BSR
- #377
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 77%
- Out of stock
- 2.6%
- Avg brand age
- 32 months
- Avg seller age
- 182 days
Competition & brand share
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.Brands
13 rising
Sellers
45
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
39%
Top 20: 79%
Open market
14%
- VYH34%
- PRIME-LINE34%
- VYF7%
- PalpitateC4%
- Nkiy Quen4%
- IFERLA3%
- Open — no brand owns it (7 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -4.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top shower door replacement parts search terms
- sliding shower door bottom guide25K/yr
- shower door bottom guide18K/yr
- shower door guides for sliding doors14K/yr
- shower door track13K/yr
- shower door parts bottom guide13K/yr
- shower door guide16K/yr
- shower door guides bottom6K/yr
- shower door track guide5K/yr
- shower door slider bottom guide5K/yr
- shower sliding door bottom guide4K/yr
Top shower door replacement 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Prime-Line M 6059 Sliding Shower Door Bottom Guide 1/2 In. Clear 2 Pack
PRIME-LINE$5.124.0★606 rev
M6219 Sliding Shower Door Bottom Track (Top-Hung Shower Door Track) Suitable for 7/16-inch Thick Glass 1/2-inch Channels Glass Shower Door Plastic Track M6219 (1 Pack)
VYH$7.684.4★254 rev
M6219 Sliding Shower Door Bottom Track (Black) Suitable for Top-Hung Sliding Shower Doors Shower Door Track 1/2-inch Slot Suitable for 7/16-inch Thick Glass Shower Doors Plastic Track M6219 (1 pack)
VYH$7.604.4★254 rev
Prime-Line M 6067 Clear Nylon Tub and Shower Enclosure Bottom Guide (Single Pack)
PRIME-LINE$5.424.1★133 rev
Prime-Line M 6089 Nylon Shower Door Bottom Guide (2 Pack)
PRIME-LINE$6.024.2★1,604 rev
Newest
by launch date
M6221 Sliding Shower Door Bottom Guide Shower Door Track Guides with 5/8 in Channel - Plastic Sliding Shower Door Bottom Guide Track for Sliding Shower Door (Top Hung) Tub Enclosure Systems 2pcs
KEYDINHT$11.172 rev
M6221 Sliding Shower Door Bottom Track Guide 5/8 in. Channels Glass Shower Door Plastic Track Replacement Fits Glass Thicknesses of up to 9/16 in (2 Pack)
IFERLA$11.567 rev
Novabright 4 Pack Sliding Shower Door Bottom Guide Track Sill Guide for Framed Glass Doors Anti-Jump Anti-derail Replacement Part Easy Install Bathroom Repair Kit
Novabright$15.254 rev
VYF M6219 Sliding Shower Door Bottom Track for (Top-Hung) Glass Shower Door Plastic Track 3 in Length 1/2 in Width Fits Glass up to 7/16 Thick with Screws (1-Pack)
VYF$7.3613 rev
M6219 Sliding Shower Door Bottom Track (Top-Hung Shower Door Track) Suitable for 7/16-inch Thick Glass 1/2-inch Channels Glass Shower Door Plastic Track M6219 (2 Pack Transparent)
VYH$8.7132 rev
Trending
90-day click momentumM6221 Sliding Shower Door Bottom Guide Shower Door Track Guides with 5/8 in Channel - Plastic Sliding Shower Door Bottom Guide Track for Sliding Shower Door (Top Hung) Tub Enclosure Systems 2pcs
KEYDINHT$11.172.5★
Novabright 4 Pack Sliding Shower Door Bottom Guide Track Sill Guide for Framed Glass Doors Anti-Jump Anti-derail Replacement Part Easy Install Bathroom Repair Kit
Novabright$15.255.0★
M6221 Sliding Shower Door Bottom Track Guide 5/8 in. Channels Glass Shower Door Plastic Track Replacement Fits Glass Thicknesses of up to 9/16 in (2 Pack)
IFERLA$11.563.1★
VYF M6219 Sliding Shower Door Bottom Track for (Top-Hung) Glass Shower Door Plastic Track 3 in Length 1/2 in Width Fits Glass up to 7/16 Thick with Screws (1-Pack)
VYF$7.364.3★
M6219 Sliding Shower Door Bottom Track (Top-Hung Shower Door Track) Suitable for 7/16-inch Thick Glass 1/2-inch Channels Glass Shower Door Plastic Track M6219 (2 Pack Transparent)
VYH$8.714.4★
What buyers say about shower door replacement parts
What buyers praise and complain about, mined from review topics.What buyers love
“fits the track perfectly”
“Excellent product”
“Easy install”
“Works as advertised”
“Performs well”
“is a good PVC material”
“Good deal”
“seems durable”
“Sturdy pieces, just make sure you check your dimensions”
“Effective guide”
What buyers complain about
“Does not fit”
“they provide a poor quality regular steel screw”
“Didnt stick”
“Very brittle”
“the glass would not fit properly into the lanes”
“It don't work”
“I feel like its just a little high in price”
“Just cheap plastic”
“it's been less than 2 months and it's broken”
“I just wish they made them clear rather than gray”
Top return reasons
Common questions
- Is shower door replacement parts profitable to sell on Amazon United States?
- The niche generates $58K/yr across 39 tracked products. 0 of 13 products launched in the last 360 days are still selling. 90-day search growth is -4.3%. Flapen's verdict: Skip it (44/100).
- How competitive is the shower door replacement parts niche?
- 13 brands and 45 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in shower door replacement parts?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Adhesion/Stickiness. The return rate is 5.0% — above our launch gate.
- When does demand for shower door replacement parts peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the shower door replacement parts niche?
- Listings span $4.60–$16.07; the average listing price is $8.54 (sweet spot $15–$100). The average incumbent carries 223 reviews — the moat a new listing must climb.