Rebuild a tired Rochester 4-barrel and get fuel metering back to spec with the Walker Products Carburetor Repair Kit 151033B, matched to the Rochester 4 BBL, model 4MV carburetor. It's a direct-fit rebuild kit for the listed applications, including the 1970 Pontiac Firebird, Catalina, LeMans and Tempest, the 1969-1972 Chevrolet Camaro, Chevelle, Impala, Corvette and C10 Pickup, and many GMC trucks and vans — see the "Vehicles it fits" section for the full list.
- OE-matched contents: gaskets, seals, jets, needles and other essential wear components to help restore proper fuel metering and fit.
- Ethanol-ready: engineered for use with today's fuel blends, including ethanol-containing fuels.
- Complete rebuild: includes the components needed to rebuild the carburetor to OE specifications.
- Application: Carburetor Manufacturer Rochester 4 BBL; Carburetor Model 4MV.
Over time a carburetor's gaskets, seals and metering parts degrade, which can lead to rough idle, hard starting, fuel leaks or poor fuel economy. If a worn carburetor is the cause, installing this kit replaces those critical parts and helps return startup, idle stability and fuel flow toward normal. Walker Products backs the kit with decades of fuel-system experience and components that meet or exceed original equipment specifications.
Frequently Asked Questions
What carburetor does this kit fit?
It is designed for the Rochester 4 BBL carburetor, model 4MV, on the listed applications. Check the "Vehicles it fits" section to confirm your vehicle and carburetor.
What's included in the kit?
It includes OE-matched gaskets, seals, jets, needles and other essential wear components needed to rebuild the carburetor to OE specifications.
Is it compatible with ethanol fuel?
Yes. The kit is engineered for use with today's fuel blends, including ethanol-containing fuels.
Can this fix a rough idle or hard starting?
If worn carburetor gaskets, seals or metering parts are the cause, replacing them with this kit can help. Diagnose the carburetor first, since other issues can cause the same symptoms.
Which vehicles does 151033B cover?
It fits many 1969-1972 Chevrolet and GMC models plus 1970 Pontiac models such as the Firebird, Catalina, LeMans and Tempest. See the "Vehicles it fits" section for the full list.
