Head Gasket Test Kit
Head Gasket Test Kit shows beatable incumbent ratings (3.9★), but soft demand (-13.6% this quarter) keeps it on the watch list.
Flapen Score
Top 34% of 811 Automotive niches · +3 vs the category median of 49
Is Head Gasket Test Kit profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Head Gasket Test Kit is a £118K/yr Amazon United Kingdom market (50K searches/yr). The top 5 brands hold 90% of demand. Verdict: Worth a look — 52/100.
Head Gasket Test Kit: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -13.6% over the last 90 days and 12.7% of searches end in a purchase.
£118K
revenue / yr
Who owns the niche?
The top 5 brands hold 90% of demand, so 10% of the market is open.
10%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 3.9★ — the gap to enter on.
0/100
page quality · 10 products
Top Head Gasket Test Kit products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
RELD Cylinder Head Gasket Tester Kit CO2 Combustion Leak Gas Test Universal for All Cars and Motorcycles Petrol Diesel Block Rapid Engine Leak Detector for 50 Tests
- Price
- £18.65
- Rating
- 4.5/5
- Reviews
- 7,797
- Age
- 2y ago
Block Check Blue Head Gasket Test Kit - Combustion Leak Detector & Engine Block Tester - CO2 Coolant Exhaust Gas Sniff Test for Cylinder Car Motorcycle Petrol & Diesel (Fluid Included 15 Tests)
- Price
- £15.18
- Rating
- 4.7/5
- Reviews
- 57
- Age
- 11mo ago
AllisWay Head Gasket Test Kit Combustion Leak Tester Kit Head Gasket Tester Precise Detection Portable Operation Suitable For Car Truck Minibuse Transport Vehicle Motorcycle Detector for 50 Tests
- Price
- £10.87
- Rating
- 3.3/5
- Reviews
- 10
- Age
- 6mo ago
NoxGule Head Gasket Test Kit 100ml Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Detector for 50 Tests - New
- Price
- £11.82
- Rating
- 3.2/5
- Reviews
- 13
- Age
- 6mo ago
NoxGule Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Easy to Use Detector for 50 Tests
- Price
- £12.31
- Rating
- 3.7/5
- Reviews
- 29
- Age
- 7mo ago
Trending
90-day click momentumAllisWay Head Gasket Test Kit Combustion Leak Tester Kit Head Gasket Tester Precise Detection Portable Operation Suitable For Car Truck Minibuse Transport Vehicle Motorcycle Detector for 50 Tests
- Price
- £10.87
- Rating
- 3.3/5
- Reviews
- 10
- Age
- 6mo ago
NoxGule Head Gasket Test Kit 100ml Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Detector for 50 Tests - New
- Price
- £11.82
- Rating
- 3.2/5
- Reviews
- 13
- Age
- 6mo ago
WEILAOK Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit Includes Leak Detection Tool for Head Gasket Failure Engine Leak 100ml
- Price
- £11.95
- Rating
- 2.9/5
- Reviews
- 6
- Age
- 6mo ago
NoxGule Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Easy to Use Detector for 50 Tests
- Price
- £12.31
- Rating
- 3.7/5
- Reviews
- 29
- Age
- 7mo ago
Block Check Blue Head Gasket Test Kit - Combustion Leak Detector & Engine Block Tester - CO2 Coolant Exhaust Gas Sniff Test for Cylinder Car Motorcycle Petrol & Diesel (Fluid Included 15 Tests)
- Price
- £15.18
- Rating
- 4.7/5
- Reviews
- 57
- Age
- 11mo ago
Newest
by launch dateAllisWay Head Gasket Test Kit Combustion Leak Tester Kit Head Gasket Tester Precise Detection Portable Operation Suitable For Car Truck Minibuse Transport Vehicle Motorcycle Detector for 50 Tests
- Price
- £10.87
- Rating
- 3.3/5
- Reviews
- 10
- Age
- 6mo ago
NoxGule Head Gasket Test Kit 100ml Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Detector for 50 Tests - New
- Price
- £11.82
- Rating
- 3.2/5
- Reviews
- 13
- Age
- 6mo ago
WEILAOK Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit Includes Leak Detection Tool for Head Gasket Failure Engine Leak 100ml
- Price
- £11.95
- Rating
- 2.9/5
- Reviews
- 6
- Age
- 6mo ago
NoxGule Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit Precise Detection Universal Formula For Detecting Leaks in Motorcycle Diesel Engines Easy to Use Detector for 50 Tests
- Price
- £12.31
- Rating
- 3.7/5
- Reviews
- 29
- Age
- 7mo ago
WEILAOK Head Gasket Test Kit Head Gasket Tester Combustion Leak Tester Kit for Cars and Motorcycles Petrol Diesel Block Rapid Engine Leak Detector for 50 Tests
- Price
- £14.85
- Rating
- 4.6/5
- Reviews
- 15
- Age
- 9mo ago
Competition: brands, sellers & click share
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
Brands
7 rising
Sellers
13
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
78%
Top 20: 100%
Open market
4%
- RELD34%
- LeakLogic25%
- NoxGule14%
- AllisWay10%
- WEILAOK7%
- X6%
- Open — no brand owns it (1 brand, 4%)
Head Gasket Test Kit demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Top Head Gasket Test Kit search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- head gasket test kit27K/yr
- head gasket tester10K/yr
- combustion leak tester kit7K/yr
- headgasket test kit6K/yr
What reviews say buyers love and hate about Head Gasket Test Kit
What buyers mention most, as a share of all reviews.
What buyers love
86% of reviews“Worked as stated”
“Easy to use”
“Good quality and performs exactly as it should”
“Good for the money”
“Does the job”
What buyers complain about
79% of reviews“Does not function”
“Didnt change colour”
“If there are combustion gases leaking into your cooling system”
“Cheap and effective”
“Waste of money”
Head Gasket Test Kit return rate & reasons
Why buyers send it back, as a share of all return requests.
1.2%
Return rate
41%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Head Gasket Test Kit questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
