3/8 Npt Plug
FailPrices span $4.57–$13.36, mostly outside the sweet spot, so 3/8 Npt Plug is a Fail.
- Flapen Score
- 47 / 100Ranks 4,157 of 7,287 Automotive niches · −2 vs the category median of 4947
- Market size
- $46K/yr34K searches / yr
- 90-day growth
- +17.3%search demand this quarter
- Competition
- 51%top-5 click share · 17 brands · 20 sellers
Flapen Score
3/8 Npt Plug against its category
The dotted line is the Automotive average. Past it, 3/8 Npt Plug is stronger. Inside it, weaker.
Market
The 3/8 Npt Plug market on Amazon at a glance
Shoppers on Amazon United States searched for 3/8 Npt Plug 34K times last year and spent an estimated $46K. The top 5 brands take 65% of clicks. Flapen scores it 47 out of 100, a Fail.
01 · Demand
An estimated 17.4% of those searches ended in a purchase.
Shoppers searched for this 34K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 17.4% of those searches ended in a purchase. Searches in the last 90 days moved +17.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $46K a year.
- Searches, last 12 months
- 34K
- Growth, 90 days vs prior 90
- +17.3%
- Conversion, latest week
- 17.4%
- Market size, estimated
- $46Ka year
- Top search term
- 3/8 npt plug21K searches a year
02 · Price
A sale here is worth $7.92.
Listings sell for $7.92 on average, from $4.57 to $13.36. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At $7.92 that is $792 to $2K a year per listing.
- Average price
- $7.92under the $15 to $100 sweet spot
- Price range
- $4.57–$13.36
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $792–$2K
- Returns
- 2.8%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
92% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #651 within Fuel System. It carries 153 reviews at 4.68 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #651in Fuel System
- Average rating
- 4.68 starsAmazon United States average 4.42 stars
- Average reviews
- 153per listing
- Listings tracked
- 24
04 · Newcomers
0 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 52 months on average, so the names here are settling in.
- Launched, last 12 months
- 3
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 52 months
Products
Top 3/8 Npt Plug products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Podavelle 3/8 NPT Male Thread Allen Head Socket Pipe Plug Fitting Aluminum Black Pack of 2
- Price
- $9.92
- Rating
- 4.7/5
- Reviews
- 364
- Age
- 4y ago

LifCratms 3/8 NPT Male Plug 304 Stainless Steel Internal Hex Thread Pipe Plug Socket Kit (Pack of 5)
- Price
- $7.23
- Rating
- 4.5/5
- Reviews
- 58
- Age
- 4y ago

Brass 3/8 NPT Male Pipe Plug Fitting Set - 10 PCS Hex Counter Sunk Plugs for Pipe End Closure
- Price
- $8.14
- Rating
- 4.7/5
- Reviews
- 294
- Age
- 2y ago

EVIL ENERGY 3/8 NPT Plug Male Hex Head Fitting Adapter Aluminum Black
- Price
- $9.98
- Rating
- 4.8/5
- Reviews
- 134
- Age
- 3y ago

SUNGATOR 3/8 Inch NPT Plug Brass 3/8 Male Socket Pipe Plug Fittings 3/8 Male NPT Brass Outer Hex Thread Pipe Fittings 2 Pack
- Price
- $5.54
- Rating
- 4.3/5
- Reviews
- 52
- Age
- 4y ago
Trending
estimated 90-day click momentum
10 Pcs 3/8 NPT Male Pipe Plug Set Brass Hex Counter Sunk Plugs for Closing the End of Pipe
- Price
- $5.36
- Rating
- 5.0/5
- Reviews
- 5
- Age
- 6mo ago

2 Pack Brass Pipe Plug 3/8 NPT Male Outer Hex Head Socket Plug Fitting for Plumbing by CX WONDERLAND
- Price
- $6.22
- Rating
- 4.7/5
- Reviews
- 36
- Age
- 8mo ago

5 PCS 3/8 NPT Male Pipe Plug Stainless Steel Pipe Plug Fitting Set Hex Counter Sunk Pipes Plugs for Closing the End of Pipes Internal Hex Socket Thread Socket Plugs Kit
- Price
- $6.05
- Rating
- 5.0/5
- Reviews
- 5
- Age
- 8mo ago

Podavelle 3/8 NPT Male Thread Allen Head Socket Pipe Plug Fitting Aluminum Silver Pack of 2
- Price
- $9.96
- Rating
- 4.7/5
- Reviews
- 364
- Age
- 2y ago

2pcs 3/8 NPT Male Brass Pipe Plug Counter Sunk Internal Hex Head by CX WONDERLAND
- Price
- $4.57
- Rating
- 4.7/5
- Reviews
- 14
- Age
- 1y ago
Newest
by launch date
10 Pcs 3/8 NPT Male Pipe Plug Set Brass Hex Counter Sunk Plugs for Closing the End of Pipe
- Price
- $5.36
- Rating
- 5.0/5
- Reviews
- 5
- Age
- 6mo ago

5 PCS 3/8 NPT Male Pipe Plug Stainless Steel Pipe Plug Fitting Set Hex Counter Sunk Pipes Plugs for Closing the End of Pipes Internal Hex Socket Thread Socket Plugs Kit
- Price
- $6.05
- Rating
- 5.0/5
- Reviews
- 5
- Age
- 8mo ago

2 Pack Brass Pipe Plug 3/8 NPT Male Outer Hex Head Socket Plug Fitting for Plumbing by CX WONDERLAND
- Price
- $6.22
- Rating
- 4.7/5
- Reviews
- 36
- Age
- 8mo ago

2pcs 3/8 NPT Male Brass Pipe Plug Counter Sunk Internal Hex Head by CX WONDERLAND
- Price
- $4.57
- Rating
- 4.7/5
- Reviews
- 14
- Age
- 1y ago

3/8 NPT Pipe Plug Vibra-Seal Coating | 3/8 X .375 NPT Threaded | Leak-Proof Seal | Durable Performance (10)
- Price
- $13.36
- Rating
- 4.7/5
- Reviews
- 5
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 51% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 falling
Sellers
20
Est. top-5 brand share
65%
Top 20: 100%
Est. top-5 click share
51%
Top 20: 95%
Open market
29%
- Podavelle24%
- EVIL ENERGY12%
- LifCratms12%
- Sliverdew10%
- CX WONDERLAND7%
- Hooshing6%
Demand
3/8 Npt Plug search demand
Weekly searches over the year. Pick a range.
Search terms
Top 3/8 Npt Plug search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 3/8 npt plug21K/yr
- 3/8 plug7K/yr
- 3/8 pipe plug5K/yr
Reviews and returns
What reviews say buyers love and hate about 3/8 Npt Plug
We read the reviews and the return reasons for every product selling here.
“Da no fit”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
12 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 3/8 Npt Plug questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









