carburetor spacer
Worth a lookShows a thin review moat (69 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Review moat
Incredible68.85avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$31.86avg listing price — sweet spot $15–$100
Brand share
Great44%top-5 brand share — no brand owns this niche
Competition
Great25%top-5 click share — an open shelf
Price range
Great$12.04–$63.18cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Conversion
Good4.1%search→purchase rate — share of searches ending in a sale
Growth
Okay+17.2%90-day search growth — must beat 0% to launch
Returns
Okay3.7%return rate — above 5% kills the launch gate
Market size
Bad$84K$84K/yr · 64K searches
According to Flapen's Amazon United States niche tracking, carburetor spacer is a $84K/yr Amazon United States market (64K searches/yr). The top 5 brands hold 44% of demand. Verdict: Worth a look — 63/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
carburetor spacer market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- $64K–$80K
- units × avg price
- Conversion rate
- 4.1%
- Avg BSR
- #1,403
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 71%
- Out of stock
- 4.8%
- Avg brand age
- 60 months
- Avg seller age
- 184 days
Competition & brand share
Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.Brands
36 rising
Sellers
103
Top-5 brand share
44%
Top 20: 84%
Top-5 click share
25%
Top 20: 58%
Open market
52%
- SHLPDFM12%
- Edelbrock11%
- TAKPART9%
- uxcell7%
- Zenymb6%
- X-AVION4%
Demand
Weekly Amazon search volume, last 14 weeks — +17.2% search growth over the last 90 days.Top carburetor spacer search terms
- carb spacer16K/yr
- carburetor spacer18K/yr
- phenolic carb spacer8K/yr
- edelbrock carburetor spacer4K/yr
- 4150 carb spacer5K/yr
- carb spacer 1 inch5K/yr
- holley carb spacer4K/yr
- edelbrock carb spacer4K/yr
Top carburetor spacer 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
uxcell Carb Spacers 1 Tall Open Phenolic Carburetor Spacer for Chevy for Ford 350 SBC BBC BB 4BBL with Gasket Screws Kit
uxcell$21.764.3★42 rev
1 Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford
TAKPART$23.114.5★158 rev
2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine
Zenymb$25.144.6★6 rev
Edelbrock 8723 1/2 Carburetor Spacer
Edelbrock$47.454.8★200 rev
For Edelbrock 1 Ported Carburetor Spacer Adapter board 4BBL Chevy Ford Holley
HENKYO$41.064.4★30 rev
Newest
by launch date
Pindex Carburetor Gaskets Spacer W/ 3/8 Vacuum Tube Compatible with Ford Mopar Holley
Pindex$15.83665 rev
Aomitop 9265 Engine Carburetor Heat Insulator Gasket Spacer-Square-Bore Compatible with Edelbrock Performer Intake & Holley 4150 Carb - Reduced Heat Soak & Fuel Percolation
Aomitop$24.439 rev
1 Tall Ported Phenolic Carburetor Spacer 4 Hole Compatible for SB 4150/4160 4bbl. SBC BBC Carb
LPFIDI$24.8412 rev
RoyalAir 1/4 inch Carburetor Spacer 4 Holes Carburetor Heat Shield Base
RoyalAir$20.0015 rev
HEROFFIX 1 Set Carb Spacers for Chevy for Ford 350 SBC BBC BB 4BBL 1 Tall Open Phenolic Carburetor Spacer with Gasket Screws Kit
HEROFFIX$27.1631 rev
Trending
90-day click momentum2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine
Zenymb$25.144.6★
1 Tall Ported Phenolic Carburetor Spacer 4 Hole Compatible for SB 4150/4160 4bbl. SBC BBC Carb
LPFIDI$24.844.2★
1 Carburetor Spacer Adapter Replacement for Holley 4BBL Carter AFB for Edelbrock 4BBL 4 barrel carb
ZZHHIWANN$21.974.2★
Edelbrock 8713 Carburetor Spacer
Edelbrock$59.824.4★
RoyalAir 1/4 inch Carburetor Spacer 4 Holes Carburetor Heat Shield Base
RoyalAir$20.004.9★
What buyers say about carburetor spacer
What buyers praise and complain about, mined from review topics.What buyers love
“Fit is good”
“Excellent product”
“worked as advertised”
“Worked perfectly”
“Good price”
“Simple to install”
“Worked well to reduce carb heat”
“I noticed a significant performance increase once the fuel stopped boiling”
“Easy to use”
“the material seems durable”
What buyers complain about
“was a little small”
“Hardware is poor standard quality”
“Can only have the studs in the manifold a couple of turns in order for the carb mounting nuts to fit”
“Very brittle”
“the carburetor leaks”
“Not advertised correctly”
“As I was removing the other one broke off”
“Cheap plastic do not buy”
“Won't fit my carb”
“And we all know they aren't cheap these days”
Top return reasons
Common questions
- Is carburetor spacer profitable to sell on Amazon United States?
- The niche generates $84K/yr across 72 tracked products. 4 of 19 products launched in the last 360 days are still selling. 90-day search growth is +17.2%. Flapen's verdict: Worth a look (63/100).
- How competitive is the carburetor spacer niche?
- 36 brands and 103 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 44% of demand.
- What do buyers complain about in carburetor spacer?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Mounting. The return rate is 3.7%.
- What does it cost to enter the carburetor spacer niche?
- Listings span $12.04–$63.18; the average listing price is $31.86 (sweet spot $15–$100). The average incumbent carries 69 reviews — the moat a new listing must climb.