---
title: "5/16 Fuel Filter — $85K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/5-16-fuel-filter"
last_updated: "2026-08-09T12:39:20.531Z"
locale: en
meta:
description: "Niche score 59/100 · $85K/yr market · 82K 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 59/100 · $85K/yr market · 82K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "5/16 Fuel Filter — $85K/yr Amazon US Niche (2026) - Flapen"
---
# **5/16 fuel filter**
**Worth a look**
Shows low returns (1.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 21Growth 56Conversion 87Competition 61Returns 95Price range 33Avg price 38Brand share 77Review moat 75Quality gap 53
**Returns**
**Great****1.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.9%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Great****58%**
top-5 brand share — no brand owns this niche
**Review moat**
**Good****517.92**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****48%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Good****+29.3%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****$10.50**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$6.28–$19.34**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$85K**
$85K/yr · 82K searches
According to Flapen's Amazon United States niche tracking, 5/16 fuel filter is a $85K/yr Amazon United States market (82K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 59/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **5/16 fuel filter market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **$84K–$105K**
- units × avg price
- **Conversion rate**
- **9.9%**
- **Avg BSR**
- **#330**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **77%**
- **Out of stock**
- **4.6%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▼falling
**Sellers**
**55**
**Top-5 brand share**
**58%**
Top 20: 97%
**Top-5 click share**
**48%**
Top 20: 94%
**Open market**
**37%**
- Wix23% - smseace17% - K&N8% - Wfdams5% - Strongthium5% - Podavelle5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +29.3% search growth over the last 90 days.
3K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/automotive/5-16-fuel-filter/trend)
## **Top 5/16 fuel filter search terms**
- **5/16 fuel filter**51K/yr+35.2%8.5% conv. - **5/16 inline fuel filter**10K/yr+40.2%9.7% conv. - **inline fuel filter 5/16**7K/yr+0.8%9.1% conv. - **fuel filter 5/16**5K/yr+13.4%10.1% conv. - **in line fuel filter 5/16 inch**4K/yr+6.2%8.1% conv. - **5/16 fuel filter inline**3K/yr+23.0%10.9% conv. - **5 16 fuel filter**2K/yr+33.7%1.8% conv. [**All search terms **](https://flapen.com/research/us/automotive/5-16-fuel-filter/search-terms)
## **Top 5/16 fuel filter 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%5%$4K10%$9K15%$13K20%$17K1101001K10K 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**smseace 4Pcs 5/16 Inch fuel filter inline with 8Pcs Hose Clamps in line fuel filter 5/16 Inch for Motorcycles Car Trucks 5/16 Inch Inline Fuel Filter**smseace**$9.93**4.2★421 rev](https://www.amazon.com/dp/B0CW9JXZ2C) [2**WIX Racing Filters Fuel Filter**Wix**$6.28**4.7★1,244 rev](https://www.amazon.com/dp/B000CSEUPG) [3**WIX 33012 Universal Metal In-Line Fuel Filter Replacement with 5/16 Inlet and Oulet - Gasoline Only (20 Micron)**Wix**$7.10**4.6★86 rev](https://www.amazon.com/dp/B000C9WJ80) [4**K&N 81-0300 Replacement Fuel Filter**K&N**$9.21**4.5★3,954 rev](https://www.amazon.com/dp/B07X64ZN5H) [5**WIX 33002 Universal Plastic In-Line Fuel Filter Replacement with 5/16 Inlet and Oulet - Gasoline Only (20 Micron)**Wix**$7.85**4.7★487 rev](https://www.amazon.com/dp/B000CSD28M)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Strongthium 5/16 Inline Fuel Filter Clear Fits for Riding Lawn Mower Tractor Generator Go Kart Mini Dirt Bike Motorcycle Car**Strongthium**$10.01**4 rev6mo ago](https://www.amazon.com/dp/B0GFCWBBVL) [**WFDAMS 5/16 Fuel Filter Inline Reusable Washable Aluminum Gas Fuel Filter with Clear Glass for Small Engine Motorcycle ATV Lawn Mower Boat (Non Fuel Injected)**Wfdams**$7.36**38 rev6mo ago](https://www.amazon.com/dp/B0G9D2LPSN) [**CNRAQR 5/16 Fuel Filters 178 Micron Removable Black Anodized Aluminum**CNRAQR**$9.98**99 rev8mo ago](https://www.amazon.com/dp/B0FXK1V28L) [**5 Sets 5/16 Inch Fuel Filter Inline 5/16 Fuel Filter Universal Gas Inline Fuel Filters Gas Fueled Filter for Tractors Cars Trucks Motorcycles Rv**Tucnoeu**$10.39**11 rev9mo ago](https://www.amazon.com/dp/B0FSS52FZB) [**5/16 & 1/4 Inline Magnetic Fuel Filter for Lawn Mower Small Engine Kohler John Deere Kawasaki - High Flow Gas Filter with Magnet Replacement (12-Pack)**WYTUDTE**$9.10**113 rev1y ago](https://www.amazon.com/dp/B0FFSXK1D6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Strongthium 5/16 Inline Fuel Filter Clear Fits for Riding Lawn Mower Tractor Generator Go Kart Mini Dirt Bike Motorcycle Car**Strongthium**$10.01**4.7★**▲ 195%**](https://www.amazon.com/dp/B0GFCWBBVL) [**WFDAMS 5/16 Fuel Filter Inline Reusable Washable Aluminum Gas Fuel Filter with Clear Glass for Small Engine Motorcycle ATV Lawn Mower Boat (Non Fuel Injected)**Wfdams**$7.36**4.4★**▲ 168%**](https://www.amazon.com/dp/B0G9D2LPSN) [**5/16 Universal Fuel Filters Industrial Tractors Cars Trucks Motorcycles Gas Powered Engine Inline Gas Fuel Line 10 Pack**SEEBOO**$16.66**4.0★**▲ 146%**](https://www.amazon.com/dp/B0912FRZ2R) [**5 Sets 5/16 Inch Fuel Filter Inline 5/16 Fuel Filter Universal Gas Inline Fuel Filters Gas Fueled Filter for Tractors Cars Trucks Motorcycles Rv**Tucnoeu**$10.39**4.8★**▲ 71%**](https://www.amazon.com/dp/B0FSS52FZB) [**Zorfeter 4 Pcs 5/16 Universal Gas Inline Fuel Filters with 8Pcs 14mm Hose Clamps Gas Inline Fuel Filter Replacement Accessories for Motorcycle Trucks Lawn Mowers**Zorfeter**$8.75**4.2★**▲ 60%**](https://www.amazon.com/dp/B0DSFVH8PZ)
**~~View all trending →~~**
## **What buyers say about 5/16 fuel filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**20%
*“Great filter”*
**Quality-Overall**15%
*“Decent quality”*
**Value For Money**14%
*“Good for the price”*
**Advertised Vs Actual Product**10%
*“As advertised”*
**Size-Overall**9%
*“The fit is solid”*
**Leak-Proof**4%
*“Didn't leak”*
**Fuel Efficiency**3%
*“provided clean fuel to lawnmower engine”*
**Efficiency**2%
*“Works very well”*
**Assembly/Installation**2%
*“Easy install”*
**Design-Overall**2%
*“Nicely built”*
### **What buyers complain about **
**Filtration**19%
*“Bad filter”*
**Quality-Overall**14%
*“Quality control is lacking”*
**Leak-Proof**13%
*“This product leaks”*
**Durability**10%
*“Do not last”*
**Size-Overall**8%
*“it is smaller”*
**Fuel Efficiency**3%
*“Dirty fuel is a big problem with small engines”*
**Value For Money**2%
*“not worth the money”*
**Adhesion/Stickiness**2%
*“Internal glue failure”*
**Material Quality**1%
*“Bad materials bad quality do not waste your $”*
**Advertised Vs Actual Product**1%
*“buried way down in the product ad”*
### **Top return reasons **
**Size-Overall**71%
**Filtration**11%
**Compatibility-Overall**5%
**Advertised Vs Actual Product**3%
**Defective Material/Parts**1%
**Leak-Proof**1%
**Fuel Efficiency**1%
**Material Quality**1%
**Quality-Overall**1%
**Connectivity-Overall**1%
## **Common questions**
- **Is 5/16 fuel filter profitable to sell on Amazon United States?**
- The niche generates $85K/yr across 26 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +29.3%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the 5/16 fuel filter niche?**
- 23 brands and 55 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 58% of demand.
- **What do buyers complain about in 5/16 fuel filter?**
- Top complaints mined from reviews: Filtration, Quality-Overall, Leak-Proof. The return rate is 1.0%.
- **When does demand for 5/16 fuel filter peak?**
- Demand peaks in Apr–May; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the 5/16 fuel filter niche?**
- Listings span $6.28–$19.34; the average listing price is $10.50 (sweet spot $15–$100). The average incumbent carries 518 reviews — the moat a new listing must climb.
## **Related niches in Automotive**
- 72 [**brake bleeder kit**](https://flapen.com/research/us/automotive/brake-bleeder-kit)$2.2M/yr+8.2%**Launch it**- 72 [**gas can pump**](https://flapen.com/research/us/automotive/gas-can-pump)$1.7M/yr+20.1%**Launch it**- 72 [**dewalt hedge trimmer**](https://flapen.com/research/us/automotive/dewalt-hedge-trimmer)$1.6M/yr+158.2%**Launch it**- 72 [**iron eraser**](https://flapen.com/research/us/automotive/iron-eraser)$107K/yr>1,000%**Worth a look**- 72 [**marine fuel line**](https://flapen.com/research/us/automotive/marine-fuel-line)$198K/yr+104.3%**Worth a look**- 72 [**garden hose filter**](https://flapen.com/research/us/automotive/garden-hose-filter)$729K/yr+110.7%**Worth a look**[**All Automotive niches **](https://flapen.com/research/us/automotive)