Fuel Pressure Regulator Carburetor
FailShoppers spend an estimated $62K a year here, so Fuel Pressure Regulator Carburetor is a Fail.
- Flapen Score
- 49 / 100Ranks 3,500 of 7,287 Automotive niches · on the category median49
- Market size
- $62K/yr33K searches / yr
- 90-day growth
- +14.3%search demand this quarter
- Competition
- 60%top-5 click share · 14 brands · 83 sellers
Flapen Score
Fuel Pressure Regulator Carburetor against its category
The dotted line is the Automotive average. Past it, Fuel Pressure Regulator Carburetor is stronger. Inside it, weaker.
Market
The Fuel Pressure Regulator Carburetor market on Amazon at a glance
Shoppers on Amazon United States searched for Fuel Pressure Regulator Carburetor 33K times last year and spent an estimated $62K. The top 5 brands take 82% of clicks. Demand peaks in Apr–May–Jun. Flapen scores it 49 out of 100, a Fail.
01 · Demand
An estimated 2.9% of those searches ended in a purchase.
Shoppers searched for this 33K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.9% of those searches ended in a purchase. Searches in the last 90 days moved +14.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $62K a year.
- Searches, last 12 months
- 33K
- Growth, 90 days vs prior 90
- +14.3%
- Conversion, latest week
- 2.9%
- Market size, estimated
- $62Ka year
- Peak month
- May2.1× the quietest month
- Top search term
- holley fuel pressure regulator29K searches a year
02 · Price
A sale here is worth $65.98.
Listings sell for $65.98 on average, from $28.38 to $152.42. Amazon reports units sold in ranges. This niche sold 750 to 1K a year. The average listing sells 0 to 100 of them. At $65.98 that is $0 to $7K a year per listing.
- Average price
- $65.98inside the $15 to $100 sweet spot
- Price range
- $28.38–$152.42
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 750–1K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$7K
- Returns
- 3.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
64% of listings pay for placement with sponsored ads. 86% ship with Prime. On an average day, 2.7% of listings are out of stock. The average listing ranks #269 within Fuel System. It carries 113 reviews at 3.72 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 64%
- Prime listings
- 86%
- Out of stock, average day
- 2.7%
- Average rank
- #269in Fuel System
- Average rating
- 3.72 starsAmazon United States average 4.42 stars
- Average reviews
- 113per listing
- Listings tracked
- 22
04 · Newcomers
3 of last year's 8 launches cleared the first-year sales bar.
8 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 48 months on average, so the names here are settling in.
- Launched, last 12 months
- 8
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 48 months
Products
Top Fuel Pressure Regulator Carburetor products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Holley Adjustable Fuel Pressure Regulator & Liquid-Filled Gauge Kit 4.5-9 PSI Range Works with Holley High-Performance Fuel Pumps Includes 0-15 PSI Gauge for Carbureted Engines
- Price
- $85.18
- Rating
- 4.1/5
- Reviews
- 44
- Age
- 4y ago

12-803 Adjustable Fuel Pressure Regulator with Gauge Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8 NPT 1-in 2-Out
- Price
- $33.83
- Rating
- 3.5/5
- Reviews
- 84
- Age
- 11mo ago

Holley 12-840 4.5-9 PSI Adjustable Billet Fuel Pressure Regulator with 3/8 NTP Ports Black Anodized
- Price
- $136.86
- Rating
- 4.3/5
- Reviews
- 38
- Age
- 15y ago

Holley 12-804 Chrome Carbureted Fuel Pressure Regulator
- Price
- $49.07
- Rating
- 4.4/5
- Reviews
- 516
- Age
- 21y ago

Holley 12-803BP Carbureted Bypass Fuel Pressure Regulator
- Price
- $129.48
- Rating
- 4.3/5
- Reviews
- 155
- Age
- 20y ago
Trending
estimated 90-day click momentum
12-803 Adjustable Fuel Pressure Regulator Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8 NPT 1-in 2-Out (12-803)
- Price
- $28.38
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 5mo ago

12-803 Adjustable Fuel Pressure Regulator with Gauge Fit for Holley and Edelbrock Carburetors 3/8in NPT 4-1/2-9 Psi
- Price
- $33.88
- Rating
- 1.3/5
- Reviews
- 4
- Age
- 7mo ago

12-804 Adjustable Fuel Pressure Regulator with Gauge Compatible with Holley and Edelbrock Carburetors 1-4 PSI 3/8 NPT 1-in 2-Out
- Price
- $33.32
- Rating
- 3.5/5
- Reviews
- 84
- Age
- 11mo ago

12-803 Adjustable Fuel Pressure Regulator with Gauge Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8 NPT 1-in 2-Out
- Price
- $33.83
- Rating
- 3.5/5
- Reviews
- 84
- Age
- 11mo ago

SZQBZMJ 12-804 Fuel Pressure Regulator Carburetor with Gauge Kit Compatible with Holley and Edelbrock Carburetor 1-4 PSI 3/8in NPT Port 1-In 2-Out
- Price
- $32.40
- Rating
- 2.9/5
- Reviews
- 2
- Age
- 5mo ago
Newest
by launch date
12-803 Adjustable Fuel Pressure Regulator Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8 NPT 1-in 2-Out (12-803)
- Price
- $28.38
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 5mo ago

SZQBZMJ 12-804 Fuel Pressure Regulator Carburetor with Gauge Kit Compatible with Holley and Edelbrock Carburetor 1-4 PSI 3/8in NPT Port 1-In 2-Out
- Price
- $32.40
- Rating
- 2.9/5
- Reviews
- 2
- Age
- 5mo ago

12-803 Adjustable Fuel Pressure Regulator with Gauge Fit for Holley and Edelbrock Carburetors 3/8in NPT 4-1/2-9 Psi
- Price
- $33.88
- Rating
- 1.3/5
- Reviews
- 4
- Age
- 7mo ago

Fuel Pressure Regulator Kit 12-804 Carburetor Fuel Valve Gauge Fit for Holley Edelbrock Carburetors 1-4 PSI Aluminum Alloy 3/8In NPT Port (1-In 2-Out)
- Price
- $35.92
- Rating
- 2.4/5
- Reviews
- 4
- Age
- 8mo ago

KARTONMOTOR Adjustable Fuel Pressure Regulator Carburetor Parts with Fuel Gauge Kit for Holley and Edelbrock Carburetors 4 1/2 to 9 PSI 3/8in NPT 12-803
- Price
- $34.28
- Rating
- 3.0/5
- Reviews
- 11
- Age
- 8mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 60% of clicks. Leaders hold, but buyers still shop past them.
Brands
14 flat
Sellers
83
Est. top-5 brand share
82%
Top 20: 100%
Est. top-5 click share
60%
Top 20: 98%
Open market
15%
- Holley28%
- FQRANBO23%
- Speedway Motors21%
- LANDSIN5%
- EVIL ENERGY4%
- PQY3%
- Open — no brand owns it (8 brands, 15%)
Demand
Fuel Pressure Regulator Carburetor search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, May, Jun · busiest ÷ quietest = 2.1×
Reviews and returns
What reviews say buyers love and hate about Fuel Pressure Regulator Carburetor
We read the reviews and the return reasons for every product selling here.
“Wont hold a consistent pressure”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Fuel Pressure Regulator Carburetor questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









