---
title: "carburetor spacer — Niche Verdict: Worth a look (64/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/carburetor-spacer"
last_updated: "2026-07-14T03:47:35.508Z"
locale: en
meta:
  description: "carburetor spacer shows a thin review moat (69 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "carburetor spacer shows a thin review moat (69 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "carburetor spacer — Niche Verdict: Worth a look (64/100) | Amazon United States - Flapen"
---

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# **carburetor spacer**

**Worth a look**

Shows a thin review moat (69 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 21Growth 46Conversion 51Competition 90Returns 44Price range 90Avg price 95Brand share 91Review moat 97Quality gap 73

**Review moat**

**Incredible****68.85**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Incredible****$31.86**

avg listing price — sweet spot $15–$100

**Brand share**

**Great****44%**

top-5 brand share — no brand owns this niche

**Competition**

**Great****25%**

top-5 click share — an open shelf

**Price range**

**Great****$12.04–$63.18**

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

**Quality gap**

**Good****4.3★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Good****4.1%**

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

**Growth**

**Okay****+17.2%**

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

**Returns**

**Okay****3.7%**

return rate — above 6% kills the launch gate

**Market size**

**Bad****$84K**

$84K/yr · 64K searches

## **Competition**

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%**

**Open market**

**52%**

- SHLPDFM12% - Edelbrock11% - TAKPART9% - uxcell7% - Zenymb6% - X-AVION4%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%2%$2K4%$3K6%$5K8%$7K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

All 72 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![uxcell Carb Spacers 1 Tall Open Phenolic Carburetor Spacer for Chevy for Ford 350 SBC BBC BB 4BBL with Gasket Screws Kit](https://m.media-amazon.com/images/I/41yLgdYf+0L.jpg)**uxcell Carb Spacers 1 Tall Open Phenolic Carburetor Spacer for Chevy for Ford 350 SBC BBC BB 4BBL with Gasket Screws Kit**uxcell**$21.76**4.3★42 rev](https://www.amazon.com/dp/B0CH196KH8) [2![1 Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford](https://m.media-amazon.com/images/I/41terZkJ0SL.jpg)**1 Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Compatible for Holley SB Chevy Ford**TAKPART**$23.11**4.5★158 rev](https://www.amazon.com/dp/B086W5D77L) [3![2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine](https://m.media-amazon.com/images/I/31vS-nMx0IL.jpg)**2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine**Zenymb**$25.14**4.6★6 rev](https://www.amazon.com/dp/B0DYMVN47Z) [4![Edelbrock 8723 1/2 Carburetor Spacer](https://m.media-amazon.com/images/I/41IQbUbVqQL.jpg)**Edelbrock 8723 1/2 Carburetor Spacer**Edelbrock**$47.45**4.8★200 rev](https://www.amazon.com/dp/B003D2BXC6) [5![For Edelbrock 1 Ported Carburetor Spacer Adapter board 4BBL Chevy Ford Holley](https://m.media-amazon.com/images/I/417vorIPuQL.jpg)**For Edelbrock 1 Ported Carburetor Spacer Adapter board 4BBL Chevy Ford Holley**HENKYO**$41.06**4.4★30 rev](https://www.amazon.com/dp/B0CJ4S9M3W)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![1 Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 1inch](https://m.media-amazon.com/images/I/41p3OLVyRDL.jpg)**1 Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 1inch**Turbook**$27.16**0 rev4mo ago](https://www.amazon.com/dp/B0GR9T59TZ) [![Carburetor Spacer 1/2 Ported Phenolic Carburetor Spacer Compatible with Holley 4150 4160 AFB Carb Chevy 4BBL SBC BBC](https://m.media-amazon.com/images/I/41DB2EyNKiL.jpg)**Carburetor Spacer 1/2 Ported Phenolic Carburetor Spacer Compatible with Holley 4150 4160 AFB Carb Chevy 4BBL SBC BBC**CoretorTex**$25.40**2 rev5mo ago](https://www.amazon.com/dp/B0G56NSWC1) [![1 Open Center Phenolic Carburetor Spacer Fit for Holley AFB Edelbrock SBC BBC 4BBL BB SB for Chevy Ford 350 with Gasket Screws Kit](https://m.media-amazon.com/images/I/413GeQcwggL.jpg)**1 Open Center Phenolic Carburetor Spacer Fit for Holley AFB Edelbrock SBC BBC 4BBL BB SB for Chevy Ford 350 with Gasket Screws Kit**CoretorTex**$25.51**1 rev5mo ago](https://www.amazon.com/dp/B0G56LRM4N) [![Open Center Phenolic Carburetor Spacer 1/2 Fit for Holley AFB Edelbrock SBC BBC 4BBL BB SB for Chevy Ford 350 with Gasket Screws Kit](https://m.media-amazon.com/images/I/41raiMycDTL.jpg)**Open Center Phenolic Carburetor Spacer 1/2 Fit for Holley AFB Edelbrock SBC BBC 4BBL BB SB for Chevy Ford 350 with Gasket Screws Kit**CoretorTex**$25.02**2 rev5mo ago](https://www.amazon.com/dp/B0G91X1HZZ) [![Engine Carburetor Heat Shield Kit Spacer Gasket Insulator Aluminum Shim 108-70 Compatible with Holley Carbs 4010 4150 4160](https://m.media-amazon.com/images/I/31Nxwkpl9cL.jpg)**Engine Carburetor Heat Shield Kit Spacer Gasket Insulator Aluminum Shim 108-70 Compatible with Holley Carbs 4010 4150 4160**Outopakkle**$51.19**3 rev6mo ago](https://www.amazon.com/dp/B0GFDK2RCH)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![X-AVION Alumimum Anodized Black 4500 Carburetor Spacer 1 Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer](https://m.media-amazon.com/images/I/31rCGDV7oVL.jpg)**X-AVION Alumimum Anodized Black 4500 Carburetor Spacer 1 Tall Square Bore 4 Holes Tapered Manifold Carburetor Spacer**X-AVION**$38.04**0.0★**▲ 233%**](https://www.amazon.com/dp/B0G8238G3Y) [![1 Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 1inch](https://m.media-amazon.com/images/I/41p3OLVyRDL.jpg)**1 Tall 4 Hole Ported Phenolic Carburetor Spacer 4bbl Compatible With Holley 4150 4160 SB Chevy Ford SBC BBC BB 1inch**Turbook**$27.16**0.0★**▲ 209%**](https://www.amazon.com/dp/B0GR9T59TZ) [![JDLLONG Black Carb Spacers 1/2 0.5 Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150 4160 4bbl. SBC BBC Carb 2 Set](https://m.media-amazon.com/images/I/41vrKSHNWOL.jpg)**JDLLONG Black Carb Spacers 1/2 0.5 Tall Open Phenolic Carburetor Spacer Compatible with Holley 4150 4160 4bbl. SBC BBC Carb 2 Set**JDLLONG**$35.72**3.0★**▲ 169%**](https://www.amazon.com/dp/B0GBSP45RP) [![2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine](https://m.media-amazon.com/images/I/31vS-nMx0IL.jpg)**2 Open Phenolic Carburetor Spacer for Holley 4150 4160 4 Barrel Carb - Compatible with SBC BBC Small Block Big Block Chevy Engine**Zenymb**$25.14**4.6★**▲ 141%**](https://www.amazon.com/dp/B0DYMVN47Z) [![1 Tall Ported Phenolic Carburetor Spacer Set with 4 Hole Compatible with SB 4150 4160 4bbl. SBC BBC Carb](https://m.media-amazon.com/images/I/41mkiTCZVKL.jpg)**1 Tall Ported Phenolic Carburetor Spacer Set with 4 Hole Compatible with SB 4150 4160 4bbl. SBC BBC Carb**ZLSCTT**$24.47**5.0★**▲ 139%**](https://www.amazon.com/dp/B0FSZQLWTJ)

**~~View all trending →~~**

## **Demand**

Weekly Amazon search volume, last 14 weeks — +17.2% search growth over the last 90 days.

1K750Apr '26Apr '26May '26May '26May '26Jun '26Jun '26

## **Reviews**

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

### **What buyers love **

**Size-Overall**27%

*“Fit is good”*

**Quality-Overall**22%

*“Excellent product”*

**Advertised Vs Actual Product**11%

*“worked as advertised”*

**Efficiency**7%

*“Worked perfectly”*

**Value For Money**6%

*“Good price”*

**Assembly/Installation**5%

*“Simple to install”*

**Heating**4%

*“Worked well to reduce carb heat”*

**Fuel Efficiency**3%

*“I noticed a significant performance increase once the fuel stopped boiling”*

**Ease Of Use**3%

*“Easy to use”*

**Material Quality**2%

*“the material seems durable”*

### **What buyers complain about **

**Size-Overall**24%

*“was a little small”*

**Quality-Overall**14%

*“Hardware is poor standard quality”*

**Mounting**9%

*“Can only have the studs in the manifold a couple of turns in order for the carb mounting nuts to fit”*

**Strength**8%

*“Very brittle”*

**Leak-Proof**4%

*“the carburetor leaks”*

**Advertised Vs Actual Product**4%

*“Not advertised correctly”*

**Durability**3%

*“As I was removing the other one broke off”*

**Material Quality**2%

*“Cheap plastic do not buy”*

**Compatibility-Overall**2%

*“Won't fit my carb”*

**Value For Money**2%

*“And we all know they aren't cheap these days”*

### **Top return reasons **

**Size-Overall**49%

**Defective Material/Parts**12%

**Compatibility-Overall**9%

**Advertised Vs Actual Product**4%

**Functionality-Overall**4%

**Mounting**3%

**Material Quality**3%

**Quality-Overall**3%

**Thickness**2%

**Assembly/Installation**1%