---
title: "Th350 Dipstick — $43K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/th350-dipstick"
last_updated: "2026-08-09T09:52:48.854Z"
locale: en
meta:
description: "Niche score 49/100 · $43K/yr market · 29K searches/yr · $32.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $43K/yr market · 29K searches/yr · $32.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Th350 Dipstick — $43K/yr Amazon US Niche (2026) - Flapen"
---
# **th350 dipstick**
**Skip it**
A small market ($43K/yr) — this niche doesn't clear our bar today.
Market size 11Growth 27Conversion 54Competition 33Returns 48Price range 95Avg price 95Brand share 39Review moat 96Quality gap 97
**Quality gap**
**Incredible****3.8★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Incredible****76.5**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Incredible****$32.57**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$16.70–$62.30**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.2%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+1.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$43K**
$43K/yr · 29K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0")
According to Flapen's Amazon United States niche tracking, th350 dipstick is a $43K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 49/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **th350 dipstick market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$49K–$65K**
- units × avg price
- **Conversion rate**
- **4.5%**
- **Avg BSR**
- **#629**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **72%**
- **Out of stock**
- **3.9%**
- **Avg brand age**
- **71 months**
- **Avg seller age**
- **185 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**82**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**15%**
- HAHAHA45% - ProForm19% - Allstar Performance9% - AXGSRV5% - Mr. Gasket3% - UOIENRT3% - Open — no brand owns it (7 brands, 15%)
## **Demand & seasonality**
Weekly Amazon search volume, last 60 weeks — +1.8% search growth over the last 90 days.
700500Spike '25Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/automotive/th350-dipstick/trend)
## **Top th350 dipstick 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%10%$4K20%$9K30%$13K40%$17K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**HAHAHA -TH350/TH400 Dipstick Turbo 350/400 Firewall Mounted Flex Transmission Oil Dipstick Compatible with GM/Chevy (Black)**HAHAHA**$34.54**4.3★123 rev](https://www.amazon.com/dp/B0CKDV9XG8) [2**HAHAHA TH350 TH400 Turbo350 Firewall Mounted Flex Transmission Dipstick TH350/TH400 Stainless Braided Hose Compatible with GM/Chevy TH350/TH400 (Silver)**HAHAHA**$29.05**4.3★112 rev](https://www.amazon.com/dp/B0CKDVX1PY) [3**ProForm 66181 TH350 Locking Dipstick and Tube**ProForm**$38.66**4.4★223 rev](https://www.amazon.com/dp/B00C7PTMFU) [4**ProForm 66182 TH400 Locking Dipstick and Tube**ProForm**$37.09**4.2★154 rev](https://www.amazon.com/dp/B00C7PTO4Y) [5**AXGSRV TH350 TH400 Turbo350 Firewall Mounted Flex Transmission Dipstick TH350/TH400 Stainless Braided Hose Compatible with GM/Chevy TH350/TH400 Replaces 700R4 Dipstick Rubber Transmission Dip Stick**AXGSRV**$17.65**2.1★5 rev](https://www.amazon.com/dp/B0G24H1WXD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**AXGSRV TH350 TH400 Turbo350 Firewall Mounted Flex Transmission Dipstick TH350/TH400 Stainless Braided Hose Compatible with GM/Chevy TH350/TH400 Replaces 700R4 Dipstick Rubber Transmission Dip Stick**AXGSRV**$17.65**5 rev7mo ago](https://www.amazon.com/dp/B0G24H1WXD) [**HAHAHA 36 TH350 TH400 Transmission Dipstick Flex Stainless Braided Hose Firewall Mounted Compatible with GM Chevy TH350 TH400 Turbo 350/400 Universal Fit.36-Inch (Silver)**HAHAHA**$39.86**10 rev10mo ago](https://www.amazon.com/dp/B0FN7LB4V2) [**HAHAHA Upgraded Chrome TH350/TH400 Turbo350/400 Transmission Dipstick Firewall Mounted Flex Oil Dipstick Compatible with GM/Chevy TH350/TH400 Turbo350/400 Chrome.**HAHAHA**$39.49**11 rev1y ago](https://www.amazon.com/dp/B0DWSWVGWK) [**Stainless Flexible Dipstick for GM Chevy TH400 TH350 Turbo Transmission SBC BBC Firewall Mounted**AmiliParts**$26.71**11 rev1y ago](https://www.amazon.com/dp/B0DW8WGBSQ) [**1 pc SHLPDFM Black Steel TH400 GM Chevy Transmission Dipstick Tube 24 Long Compatible with Chevy GM Turbo 400 TH-400**SHLPDFM**$30.96**7 rev1y ago](https://www.amazon.com/dp/B0DRNX77G3)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Speedway Motors TH350 Transmission Chrome Dipstick 27 Inch Steel Tube with Chrome Handle Bellhousing Mount Style for GM TH350 Durable Replacement Dipstick for Show Cars**Speedway Motors**$16.70**3.8★**▲ 286%**](https://www.amazon.com/dp/B075NDPRNT) [**AXGSRV TH350 TH400 Turbo350 Firewall Mounted Flex Transmission Dipstick TH350/TH400 Stainless Braided Hose Compatible with GM/Chevy TH350/TH400 Replaces 700R4 Dipstick Rubber Transmission Dip Stick**AXGSRV**$17.65**2.1★**▲ 129%**](https://www.amazon.com/dp/B0G24H1WXD) [**Transmission Dipstick Stainless Steel Braided Hose Flexible Firewall Mount Compatible with TH350 TH400 700R4 for Chevy GM SBC BBC**JahyShow**$24.33**3.7★**▲ 82%**](https://www.amazon.com/dp/B07HRL1Q8L) [**HAHAHA 36 TH350 TH400 Transmission Dipstick Flex Stainless Braided Hose Firewall Mounted Compatible with GM Chevy TH350 TH400 Turbo 350/400 Universal Fit.36-Inch (Silver)**HAHAHA**$39.86**4.1★**▲ 72%**](https://www.amazon.com/dp/B0FN7LB4V2) [**Mr. Gasket Th350 Trans Dipstick 27L Chrome**Mr. Gasket**$32.46**4.0★**▲ 20%**](https://www.amazon.com/dp/B000BWCG9K)
**~~View all trending →~~**
## **What buyers say about th350 dipstick**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**29%
*“Best replacement dipstick”*
**Size-Overall**22%
*“Fit Perfect”*
**Leak-Proof**14%
*“No leaks”*
**Advertised Vs Actual Product**6%
*“Works as expected”*
**Assembly/Installation**6%
*“Installation was straightforward”*
**Shape/Style**5%
*“looks pretty”*
**Ease Of Use**5%
*“easy to do”*
**Strength**3%
*“Now its rock solid and works well”*
**Design-Overall**1%
*“The look and design of this dipstick is great”*
**Ease Of Cleaning**1%
*“It looks much cleaner in the engine bay”*
### **What buyers complain about **
**Size-Overall**23%
*“Doesnt fit a th 400 like it says”*
**Leak-Proof**19%
*“Leaks horribly”*
**Quality-Overall**18%
*“Bad quality control”*
**Natural Resource Wastage**5%
*“Waste of time and money”*
**Product Condition**5%
*“it was used”*
**Flexibility**5%
*“Gonna have to bend it to straighten it out”*
**Assembly/Installation**5%
*“Don't buy unless you want to repair it before installing”*
**Mounting**3%
*“Had to adjust the mounting tab as it was bent”*
**Measurement/Reading Accuracy**3%
*“This thing is WILDLY inaccurate”*
**Thickness**3%
*“Too thick to fit”*
### **Top return reasons **
**Size-Overall**42%
**Compatibility-Overall**19%
**Mounting**7%
**Defective Material/Parts**6%
**Leak-Proof**5%
**Advertised Vs Actual Product**4%
**Functionality-Overall**4%
**Add-Ons/Attachments**2%
**Adhesion/Stickiness**2%
**Assembly/Installation**2%
## **Common questions**
- **Is th350 dipstick profitable to sell on Amazon United States?**
- The niche generates $43K/yr across 18 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +1.8%. Flapen's verdict: Skip it (49/100).
- **How competitive is the th350 dipstick niche?**
- 13 brands and 82 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in th350 dipstick?**
- Top complaints mined from reviews: Size-Overall, Leak-Proof, Quality-Overall. The return rate is 3.2%.
- **When does demand for th350 dipstick peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the th350 dipstick niche?**
- Listings span $16.70–$62.30; the average listing price is $32.57 (sweet spot $15–$100). The average incumbent carries 77 reviews — the moat a new listing must climb.
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