fuel pressure regulator carburetor
Skip itA small market ($62K/yr) — this niche doesn't clear our bar today.
Quality gap
Incredible3.7★avg incumbent rating — lower means beatable quality
Review moat
Great113.36avg incumbent reviews — the moat a new listing must climb
Avg price
Great$65.98avg listing price — sweet spot $15–$100
Price range
Good$28.38–$152.42cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Okay3.1%return rate — above 6% kills the launch gate
Growth
Okay+14.3%90-day search growth — must beat 0% to launch
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Market size
Bad$62K$62K/yr · 33K searches
Competition
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
14 flat
Sellers
83
Top-5 brand share
82%
Open market
15%
- Holley28%
- FQRANBO23%
- Speedway Motors21%
- LANDSIN5%
- EVIL ENERGY4%
- PQY3%
- Open — no brand owns it (8 brands, 15%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 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
Speedway Motors$85.184.1★44 rev
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
FQRANBO$33.833.5★84 rev
Holley 12-840 4.5-9 PSI Adjustable Billet Fuel Pressure Regulator with 3/8 NTP Ports Black Anodized
Holley$136.864.3★38 rev
Holley 12-804 Chrome Carbureted Fuel Pressure Regulator
Holley$49.074.4★516 rev
Holley 12-803BP Carbureted Bypass Fuel Pressure Regulator
Holley$129.484.3★155 rev
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)
RoyalAir$28.380 rev
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
SZQBZMJ$32.402 rev
12-803 Adjustable Fuel Pressure Regulator with Gauge Fit for Holley and Edelbrock Carburetors 3/8in NPT 4-1/2-9 Psi
Tavaski$33.884 rev
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)
LANDSIN$35.924 rev
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
KARTONMOTOR$34.2811 rev
Trending
90-day click momentum12-803 Adjustable Fuel Pressure Regulator Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8 NPT 1-in 2-Out (12-803)
RoyalAir$28.380.0★
12-803 Adjustable Fuel Pressure Regulator with Gauge Fit for Holley and Edelbrock Carburetors 3/8in NPT 4-1/2-9 Psi
Tavaski$33.881.3★
12-804 Adjustable Fuel Pressure Regulator with Gauge Compatible with Holley and Edelbrock Carburetors 1-4 PSI 3/8 NPT 1-in 2-Out
FQRANBO$33.323.5★
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
FQRANBO$33.833.5★
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
SZQBZMJ$32.402.9★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +14.3% search growth over the last 90 days.Peak months: Apr, May, Jun · busiest ÷ quietest = 2.1×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Medium quality”
“Worked as expected”
“The pressure regulator aspect is great”
“Looks good and the fuel lines are easy to build”
“It works fine”
“Installed easily with no issues at all”
“No leaks or performance problems so far”
“Its worth the money”
“Easy mounting, good quality, and looks great”
“The adjustment is smooth and precise”
What buyers complain about
“Wont hold a consistent pressure”
“poor quality rubbish”
“It leaks like an open garden hose”
“Non functioning”
“doesnt read what is advertised”
“it fogged the plastic up so bad you cant read the gauge”
“didnt get around to installing it for a while”
“Failed within an hours of use”
“the lack of any instructions could cause problems if you don't know how they work”
“no fitting for gauge”