tru cool 40k transmission cooler
Skip itA concentrated shelf (top 5 take 93% of clicks) — this niche doesn't clear our bar today.
Review moat
Great103.14avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Good$114.07avg listing price — sweet spot $15–$100
Market size
Good$355K$355K/yr · 130K searches
Growth
Good+22.0%90-day search growth — must beat 0% to launch
Returns
Okay3.0%return rate — above 5% kills the launch gate
Price range
Okay$58.86–$191.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay2.4%search→purchase rate — share of searches ending in a sale
Brand share
Bad93%top-5 brand share — brand-locked demand
Competition
Bad93%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, tru cool 40k transmission cooler is a $355K/yr Amazon United States market (130K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Apr–May–Jun. Verdict: Skip it — 44/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
tru cool 40k transmission cooler market data
- Units sold / yr
- 3K–4K
- avg 250–500/product
- Revenue / yr
- $342K–$456K
- units × avg price
- Conversion rate
- 2.4%
- Avg BSR
- #192
- Page quality
- 0%
- Prime
- 57%
- Sponsored
- 57%
- Out of stock
- 3.9%
- Avg brand age
- 55 months
- Avg seller age
- 167 days
Competition & brand share
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
31
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
93%
Top 20: 100%
Open market
3%
- Lucky Seven43%
- BBB19%
- Mishimoto18%
- Tru-Cool9%
- RADHLBNIU5%
- Enignelooc4%
- Open — no brand owns it (1 brand, 3%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +22.0% search growth over the last 90 days.Peak months: Apr, May, Jun · busiest ÷ quietest = 2.0×
Top tru cool 40k transmission cooler search terms
- 40k transmission cooler46K/yr
- tru cool 40k transmission cooler25K/yr
- trucool 40k trans cooler9K/yr
- tru-cool 40k transmission cooler6K/yr
- tru cool 40k transmission cooler 4l60e8K/yr
- true cool 40k transmission cooler5K/yr
- tru cool 40k7K/yr
- tru cool max transmission cooler3K/yr
- lpd473914K/yr
- tru cool 40k trans cooler4K/yr
Top tru cool 40k transmission cooler 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
40k Transmission Oil Cooler LPD47391 Heavy Duty 40 000 GVW Max Low Pressure Drop Compatible with Tru-Cool Includes Mounting Hardware-Ideal for Heavy Vehicles 40 000 GVW transmission cooler (Silver)
Lucky Seven$67.204.0★200 rev
Tru-Cool Max 40 000 GVW Transmission Oil Cooler Low Pressure Drop OC-4739-1 LPD 47391 LPD47391 OC47391 LPD-4739-1
BBB$129.663.7★8 rev
Mishimoto MMTC-SP-13N Universal 13-Row Stacked Plate Transmission Cooler Kit 22.85 x 7.10 x 1.25 Core 40 000 GVW
Mishimoto$160.274.7★149 rev
Tru-Cool Max LPD4739 4739 40 000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass
Tru-Cool$127.264.3★230 rev
RADHLBNIU LPD47391 40k Transmission Oil Cooler Kit Compatible with Heavy Duty Van Light Truck R.V and Towing Applications 40000 GVW Low Pressure Drop Trans Cooler with Mounting Hardware Replace# 47391
RADHLBNIU$58.863.9★36 rev
Newest
by launch date
Enignelooc Transmission Oil Cooler Shroud Fan Tru-Cool 40 000 40k GVW Low-Pressure Dr LPD47391
Enignelooc$191.811 rev
Tru-Cool Max 40 000 GVW Transmission Oil Cooler Low Pressure Drop OC-4739-1 LPD 47391 LPD47391 OC47391 LPD-4739-1
BBB$129.668 rev
40k Transmission Oil Cooler LPD47391 Heavy Duty 40 000 GVW Max Low Pressure Drop Compatible with Tru-Cool Includes Mounting Hardware-Ideal for Heavy Vehicles 40 000 GVW transmission cooler (Silver)
Lucky Seven$67.20200 rev
OVANOH Low Pressure Drop Transmission Oil Cooler 40k Transmission Oil Cool Compatible For Heavy Duty 40 000 GVW Max Low Mounting Hardware Towing Applications and Advanced Cooling Protection LPD47391
OVANOH$63.4298 rev
RADHLBNIU LPD47391 40k Transmission Oil Cooler Kit Compatible with Heavy Duty Van Light Truck R.V and Towing Applications 40000 GVW Low Pressure Drop Trans Cooler with Mounting Hardware Replace# 47391
RADHLBNIU$58.8636 rev
Trending
90-day click momentumEnignelooc Transmission Oil Cooler Shroud Fan Tru-Cool 40 000 40k GVW Low-Pressure Dr LPD47391
Enignelooc$191.815.0★
Tru-Cool Max 40 000 GVW Transmission Oil Cooler Low Pressure Drop OC-4739-1 LPD 47391 LPD47391 OC47391 LPD-4739-1
BBB$129.663.7★
Mishimoto MMTC-SP-13N Universal 13-Row Stacked Plate Transmission Cooler Kit 22.85 x 7.10 x 1.25 Core 40 000 GVW
Mishimoto$160.274.7★
RADHLBNIU LPD47391 40k Transmission Oil Cooler Kit Compatible with Heavy Duty Van Light Truck R.V and Towing Applications 40000 GVW Low Pressure Drop Trans Cooler with Mounting Hardware Replace# 47391
RADHLBNIU$58.863.9★
Tru-Cool Max LPD4739 4739 40 000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass
Tru-Cool$127.264.3★
What buyers say about tru cool 40k transmission cooler
What buyers praise and complain about, mined from review topics.What buyers love
“Good price lasting quality”
“Cools very well”
“The install was simple”
“Fits great”
“Great value for money”
“Definitely works as advertised”
“Working fine just be care full tightening hose clamps”
“Works good”
“Good upgrade for the factory transmission color on my 2007 Chevrolet Silverado”
“Trans oil cooler”
What buyers complain about
“Do not buy these coolers I have purchased many of these in the past”
“the hose sent with this kit is absoultly junk installed it yesterday the hose burst before i had fifty miles on it i cut the bad section out 70 dollars in lost fluid replaced started home same burst again different place five more quarts of fluid at 12 dollars each this time took the whole hose off threw it in the garbage total lost was ten quarts of fluid at nearly 12 bucks a piece”
“Hose clamps ae cheep and the wrong size”
“Bad supplied rubber hose”
“Catastrophic failure”
“Broke after a year”
“Junk”
“ended up pumping most of the transmission fluid out”
“The knock-off clones are thin, overly light, and don't give a feeling of confidence”
“mounting may be a bit challenging”
Top return reasons
Common questions
- Is tru cool 40k transmission cooler profitable to sell on Amazon United States?
- The niche generates $355K/yr across 7 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +22.0%. Flapen's verdict: Skip it (44/100).
- How competitive is the tru cool 40k transmission cooler niche?
- 7 brands and 31 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in tru cool 40k transmission cooler?
- Top complaints mined from reviews: Coolant, Leak-Proof, Size-Overall. The return rate is 3.0%.
- When does demand for tru cool 40k transmission cooler peak?
- Demand peaks in Apr–May–Jun; the busiest month runs 2.0× the quietest.
- What does it cost to enter the tru cool 40k transmission cooler niche?
- Listings span $58.86–$191.81; the average listing price is $114.07 (sweet spot $15–$100). The average incumbent carries 103 reviews — the moat a new listing must climb.