Is holley carburetor rebuild kit profitable to sell on Amazon United States?

The niche generates $33K/yr across 12 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +20.4%. Flapen's verdict: Skip it (48/100).

How competitive is the holley carburetor rebuild kit niche?

10 brands and 68 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 87% of demand.

What do buyers complain about in holley carburetor rebuild kit?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Leak-Proof. The return rate is 2.1%.

When does demand for holley carburetor rebuild kit peak?

Demand peaks in Aug–Sep; the busiest month runs 2.0× the quietest.

What does it cost to enter the holley carburetor rebuild kit niche?

Listings span $26.95–$62.51; the average listing price is $39.42 (sweet spot $15–$100). The average incumbent carries 204 reviews — the moat a new listing must climb.

holley carburetor rebuild kit

Skip it

A small market ($33K/yr) — this niche doesn't clear our bar today.

Avg price

Incredible$39.42

avg listing price — sweet spot $15–$100

Price range

Incredible$26.95–$62.51

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Review moat

Great204.33

avg incumbent reviews — the moat a new listing must climb

Returns

Good2.1%

return rate — above 5% kills the launch gate

Growth

Good+20.4%

90-day search growth — must beat 0% to launch

Conversion

Okay3.1%

search→purchase rate — share of searches ending in a sale

Brand share

Okay87%

top-5 brand share — brands hold most of the demand

Competition

Bad83%

top-5 click share — a locked-up shelf

Market size

Bad$33K

$33K/yr · 27K searches

According to Flapen's Amazon United States niche tracking, holley carburetor rebuild kit is a $33K/yr Amazon United States market (27K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 48/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

holley carburetor rebuild kit market data

Units sold / yr: 1K–2K; avg 0–100/product
Revenue / yr: $49K–$59K; units × avg price
Conversion rate: 3.1%
Avg BSR: #2,029
Page quality: 0%
Prime: 100%
Sponsored: 67%
Out of stock: 1.1%
Avg brand age: 28 months
Avg seller age: 197 days

Competition & brand share

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 rising

Sellers

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

Holley30%
SeaEagles24%
AED20%
kaekea7%
Kolasina7%
FQRANBO4%
Open — no brand owns it (4 brands, 9%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +20.4% search growth over the last 90 days.

Peak months: Aug, Sep · busiest ÷ quietest = 2.0×

Open Trend

Top holley carburetor rebuild kit search terms

holley 4150 rebuild kit19K/yr +18.4%4.2% conv.
holley 750 double pumper rebuild kit4K/yr +51.8%3.6% conv.
holley 650 rebuild kit3K/yr -3.7%3.0% conv.

All search terms

Top holley carburetor rebuild kit 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Holley 37-485 Renew Kit Carburetor Rebuild Kit

Holley$62.514.7★625 rev

Carburetor Rebuild Kit Repacement For Holley Carburetor Renew Kits 37-485 For 4 BARREL GASOLINE DOUBLE PUMP MODEL 4150 600 650 700 750 800 850 CFM

SeaEagles$36.743.9★145 rev

Advanced Engine Design Carburetor Rebuild Kit Performance Holley 4150 Carburetors Gas Kit

AED$59.144.6★514 rev

37-485 Carburetor Rebuild Kit Compatible with Holley Perf. Carburetors Double Pumper 4150 / 4150C models 600 CFM 650 CFM 700 CFM 750 CFM 800 CFM 850 CFM Carb Renew Kits Replacement Parts

kaekea$28.893.8★4 rev

37-485 Carburetor Rebuild Kit Fit for Holley 4 Barrel Gasoline Double Pumper Carburetors (Models 4150 600 650 700 750 800 850 CFM)

Kolasina$31.734.0★28 rev

Newest

by launch date

Carburetor Rebuild Kit For Holley 37-485 For 4 BARREL GASOLINE DOUBLE PUMP MODEL 4150 600 650 700 750 800 850 CFM

HZLXQHZL$32.768 rev

5mo ago

4150 Carburetor Rebuild Kit Fit for Holley 37-485 4 Barrel Gasoline Carb Renew Kit for 4150 600 650 700 750 800 850 CFM

CoretorTex$36.228 rev

5mo ago

37-485 Carburetor Rebuild Kit Compatible with Holley Perf. Carburetors Double Pumper 4150 / 4150C models 600 CFM 650 CFM 700 CFM 750 CFM 800 CFM 850 CFM Carb Renew Kits Replacement Parts

kaekea$28.894 rev

6mo ago

OWNDR 37-485 Carburetor Rebuild Kit Fit for Holley 4150/4150C Carburetors for 600CFM 650CFM 700CFM 750CFM 800CFM 850CFM

OWNDR$30.705 rev

10mo ago

37-485 Carburetor Rebuild Kit Compatible with Holley 4150 4 Barrel Double Pumper Carbs Renew Kit for Models 600 650 700 750 800 850 CFM

FQRANBO$29.948 rev

11mo ago

What buyers say about holley carburetor rebuild kit

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall22%

“Good quality”

Value For Money19%

“Great value for the money”

Leak-Proof11%

“It fixed my leaking issues”

Maintenance And Repair10%

“Quality Rebuild Kit That Brings a Holley 4150 Back to Life”

Size-Overall6%

“Fit my application perfectly”

Assembly/Installation5%

“Everything went together smoothly”

Advertised Vs Actual Product3%

“Works like it should”

Motor Power3%

“Great carburetor kit”

Correct Contents3%

“It has a lot of parts”

Material Quality3%

“all of the gaskets fit properly with good quality materials”

What buyers complain about

Size-Overall25%

“Gaskets did not fit properly”

Quality-Overall24%

“Not a good kit”

Leak-Proof13%

“Horrible product, gaskets melt when in contact with gasoline and causes leaks and clog the carb”

Material Quality8%

“Poor quality and poor material”

Stain Resistance6%

“Blue smears with gas”

Adhesion/Stickiness5%

“The gaskets are not non-stick”

Durability4%

“I can't comment on the durability”

Fuel Efficiency3%

“Disintegrate when exposed to gasoline”

Assembly/Installation3%

“These are not as easy to install as you might think”

Top return reasons

Defective Material/Parts23%

Size-Overall21%

Compatibility-Overall14%

Advertised Vs Actual Product13%

Maintenance And Repair5%

Quality-Overall5%

Functionality-Overall4%

Leak-Proof3%

Material Quality2%

Product Condition1%

Common questions

Is holley carburetor rebuild kit profitable to sell on Amazon United States?: The niche generates $33K/yr across 12 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +20.4%. Flapen's verdict: Skip it (48/100).
How competitive is the holley carburetor rebuild kit niche?: 10 brands and 68 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in holley carburetor rebuild kit?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Leak-Proof. The return rate is 2.1%.
When does demand for holley carburetor rebuild kit peak?: Demand peaks in Aug–Sep; the busiest month runs 2.0× the quietest.
What does it cost to enter the holley carburetor rebuild kit niche?: Listings span $26.95–$62.51; the average listing price is $39.42 (sweet spot $15–$100). The average incumbent carries 204 reviews — the moat a new listing must climb.