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Mechman Alternators 7127240

240 Amp S Series Alternator for Select 1963-1985 GM Vehicles

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• 240A High Output Alternator
• For use with Select 1963-1985 GM Vehicles
• Custom Machined Large Case Alternator
• 8 Press Fit High Amp Diodes
• Twin Internal Cooling Fans

See compatible vehicles Learn more about the s7127240

We apologize

This item has been discontinued

Description


Mechman Alternators brand icon

Authorized dealer


Mechman L Series Alternators

The L series family of alternators has brought large-case alternator performance and durability to vehicles that were originally equipped with small case units. These kits include a custom machined large case alternator utilizing emergency vehicle internals, and come with the necessary adapter brackets and harness for installation. These kits are manufactured for vehicles where there is no other option but to upgrade to a physically larger alternator. They feature massive rectifiers with 8 press fit high amp diodes and large diameter twin internal cooling fans for excellent durability. The L series is specially designed to have a larger diameter, but shorter alternator body to fit into tight spaces.

General Features:

  • 240 amp high output alternator
  • Compatible with select 1963-1985 GM vehicles
  • Custom machined large case alternator
    • Utilizes emergency vehicle internals
  • Massive rectifiers with 8 press fit high amp diodes
  • Large diameter twin internal cooling fans
  • Specifically designed to fit in tight spaces
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Compatibility List

  • Buick
    • 1963 - 1979 Full Size Cars with V-8 Engine
  • Chevrolet
    • 1963 - 1985 All V-8 Engines with Factory 10DN, 10SI, and 12SI Alternator
  • Oldsmobile
    • 1965 - 1985 All V-8 Engines with Factory 10DN, 10SI, and 12SI Alternator
  • Pontiac
    • 1965 - 1985 All V-8 Engines with Factory 10DN, 10SI, and 12SI Alternator
Notes:

This unit has a self exciting internal voltage regulator that does not require anything to be plugged into the alternator.

This unit will more than likely not charge below 800 engine RPM on these vehicles.

This vehicle has a narrow drive belt, and may experience belt slip with alternators of this amperage.

Not Sure Which Alternator Fits Your Vehicle?

Check the Mechman Alternators Vehicle Fit Guide to find the right alternator for your vehicle!

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

  • 1963 Buick Electra
  • 1963 Buick LeSabre
  • 1963 Buick Wildcat
  • 1963 Cadillac DeVille
  • 1963 Chevrolet Bel Air
  • 1963 Chevrolet Chevy II
  • 1963 Chevrolet Corvair
  • 1963 Chevrolet Corvette
  • 1964 Buick Electra
  • 1964 Buick LeSabre
  • 1964 Buick Wildcat
  • 1964 Cadillac DeVille
  • 1964 Chevrolet Bel Air
  • 1964 Chevrolet Chevy II
  • 1964 Chevrolet Corvair
  • 1964 Chevrolet Corvette
  • 1964 Chevrolet Malibu
  • 1965 Buick Electra
  • 1965 Buick LeSabre
  • 1965 Buick Wildcat
  • 1965 Cadillac Calais
  • 1965 Cadillac DeVille
  • 1965 Cadillac Fleetwood
  • 1965 Chevrolet Bel Air
  • 1965 Chevrolet Chevy II
  • 1965 Chevrolet Corvair
  • 1965 Chevrolet Corvette
  • 1965 Chevrolet Malibu
  • 1965 Oldsmobile 442
  • 1965 Oldsmobile 98
  • 1965 Oldsmobile Cutlass
  • 1965 Oldsmobile Delta 88
  • 1965 Oldsmobile Dynamic
  • 1965 Oldsmobile F85
  • 1965 Oldsmobile Jetstar 88
  • 1965 Oldsmobile Jetstar I
  • 1965 Oldsmobile Starfire
  • 1965 Oldsmobile Vista Cruiser
  • 1965 Pontiac Bonneville
  • 1965 Pontiac Catalina
  • 1965 Pontiac GTO
  • 1965 Pontiac Grand Prix
  • 1965 Pontiac LeMans
  • 1965 Pontiac Safari
  • 1965 Pontiac Star Chief
  • 1965 Pontiac Tempest
  • 1965 Pontiac Vista
  • 1966 Buick Electra
  • 1966 Buick LeSabre
  • 1966 Buick Wildcat
  • 1966 Cadillac Calais
  • 1966 Cadillac DeVille
  • 1966 Cadillac Fleetwood
  • 1966 Chevrolet Bel Air
  • 1966 Chevrolet Caprice
  • 1966 Chevrolet Chevy II
  • 1966 Chevrolet Corvair
  • 1966 Chevrolet Corvette
  • 1966 Chevrolet Malibu
  • 1966 Oldsmobile 442
  • 1966 Oldsmobile 98
  • 1966 Oldsmobile Cutlass
  • 1966 Oldsmobile Delta 88
  • 1966 Oldsmobile Dynamic
  • 1966 Oldsmobile F85
  • 1966 Oldsmobile Jetstar 88
  • 1966 Oldsmobile Jetstar I
  • 1966 Oldsmobile Starfire
  • 1966 Oldsmobile Toronado
  • 1966 Oldsmobile Vista Cruiser
  • 1966 Pontiac Bonneville
  • 1966 Pontiac Catalina
  • 1966 Pontiac GTO
  • 1966 Pontiac Grand Prix
  • 1966 Pontiac LeMans
  • 1966 Pontiac Safari
  • 1966 Pontiac Star Chief
  • 1966 Pontiac Tempest
  • 1967 Buick Electra
  • 1967 Buick LeSabre
  • 1967 Buick Wildcat
  • 1967 Cadillac Calais
  • 1967 Cadillac DeVille
  • 1967 Cadillac Fleetwood
  • 1967 Chevrolet Bel Air
  • 1967 Chevrolet Caprice
  • 1967 Chevrolet Chevy II
  • 1967 Chevrolet Corvair
  • 1967 Chevrolet Corvette
  • 1967 Chevrolet Malibu
  • 1967 Oldsmobile 442
  • 1967 Oldsmobile 98
  • 1967 Oldsmobile Cutlass
  • 1967 Oldsmobile Cutlass Supreme
  • 1967 Oldsmobile Delmont 88
  • 1967 Oldsmobile Delta 88
  • 1967 Oldsmobile F85
  • 1967 Oldsmobile Jetstar 88
  • 1967 Oldsmobile Toronado
  • 1967 Oldsmobile Vista Cruiser
  • 1967 Pontiac Bonneville
  • 1967 Pontiac Catalina
  • 1967 Pontiac Executive
  • 1967 Pontiac Firebird
  • 1967 Pontiac GTO
  • 1967 Pontiac Grand Prix
  • 1967 Pontiac LeMans
  • 1967 Pontiac Safari
  • 1967 Pontiac Tempest
  • 1968 Buick Electra
  • 1968 Buick LeSabre
  • 1968 Buick Wildcat
  • 1968 Cadillac Calais
  • 1968 Cadillac DeVille
  • 1968 Cadillac Fleetwood
  • 1968 Chevrolet Bel Air
  • 1968 Chevrolet Caprice
  • 1968 Chevrolet Chevy II
  • 1968 Chevrolet Corvair
  • 1968 Oldsmobile 442
  • 1968 Oldsmobile 98
  • 1968 Oldsmobile Cutlass
  • 1968 Oldsmobile Cutlass Supreme
  • 1968 Oldsmobile Delmont 88
  • 1968 Oldsmobile Delta 88
  • 1968 Oldsmobile F85
  • 1968 Oldsmobile Toronado
  • 1968 Oldsmobile Vista Cruiser
  • 1968 Pontiac Acadian
  • 1968 Pontiac Bonneville
  • 1968 Pontiac Catalina
  • 1968 Pontiac Executive
  • 1968 Pontiac Firebird
  • 1968 Pontiac GTO
  • 1968 Pontiac Grand Prix
  • 1968 Pontiac LeMans
  • 1968 Pontiac Safari
  • 1968 Pontiac Tempest
  • 1969 Buick LeSabre
  • 1969 Buick Wildcat
  • 1969 Cadillac Calais
  • 1969 Cadillac DeVille
  • 1969 Cadillac Fleetwood
  • 1969 Chevrolet Bel Air
  • 1969 Chevrolet Caprice
  • 1969 Chevrolet Corvair
  • 1969 Chevrolet Nova
  • 1969 Oldsmobile 442
  • 1969 Oldsmobile 98
  • 1969 Oldsmobile Cutlass
  • 1969 Oldsmobile Cutlass Supreme
  • 1969 Oldsmobile Delta 88
  • 1969 Oldsmobile F85
  • 1969 Oldsmobile Toronado
  • 1969 Oldsmobile Vista Cruiser
  • 1969 Pontiac Acadian
  • 1969 Pontiac Bonneville
  • 1969 Pontiac Catalina
  • 1969 Pontiac Executive
  • 1969 Pontiac Firebird
  • 1969 Pontiac GTO
  • 1969 Pontiac Grand Prix
  • 1969 Pontiac LeMans
  • 1969 Pontiac Safari
  • 1969 Pontiac Tempest
  • 1970 Buick Electra
  • 1970 Buick LeSabre
  • 1970 Buick Wildcat
  • 1970 Cadillac Calais
  • 1970 Cadillac DeVille
  • 1970 Cadillac Fleetwood
  • 1970 Chevrolet Bel Air
  • 1970 Chevrolet Caprice
  • 1970 Chevrolet Nova
  • 1970 Oldsmobile 442
  • 1970 Oldsmobile 98
  • 1970 Oldsmobile Custom Cruiser
  • 1970 Oldsmobile Cutlass
  • 1970 Oldsmobile Cutlass Supreme
  • 1970 Oldsmobile Delta 88
  • 1970 Oldsmobile F85
  • 1970 Oldsmobile Toronado
  • 1970 Oldsmobile Vista Cruiser
  • 1970 Pontiac Acadian
  • 1970 Pontiac Bonneville
  • 1970 Pontiac Catalina
  • 1970 Pontiac Executive
  • 1970 Pontiac Firebird
  • 1970 Pontiac GTO
  • 1970 Pontiac Grand Prix
  • 1970 Pontiac LeMans
  • 1970 Pontiac Safari
  • 1970 Pontiac Tempest
  • 1971 Buick Electra
  • 1971 Buick LeSabre
  • 1971 Cadillac Calais
  • 1971 Cadillac DeVille
  • 1971 Cadillac Fleetwood
  • 1971 Chevrolet Bel Air
  • 1971 Chevrolet Caprice
  • 1971 Chevrolet Nova
  • 1971 Oldsmobile 442
  • 1971 Oldsmobile 98
  • 1971 Oldsmobile Custom Cruiser
  • 1971 Oldsmobile Cutlass
  • 1971 Oldsmobile Cutlass Supreme
  • 1971 Oldsmobile Delta 88
  • 1971 Oldsmobile F85
  • 1971 Oldsmobile Ninety-Eight
  • 1971 Oldsmobile Toronado
  • 1971 Oldsmobile Vista Cruiser
  • 1971 Pontiac Acadian
  • 1971 Pontiac Bonneville
  • 1971 Pontiac Catalina
  • 1971 Pontiac Firebird
  • 1971 Pontiac GTO
  • 1971 Pontiac Grand Prix
  • 1971 Pontiac Grand Safari
  • 1971 Pontiac Grand Ville
  • 1971 Pontiac LeMans
  • 1971 Pontiac Ventura
  • 1972 Buick LeSabre
  • 1972 Cadillac Calais
  • 1972 Cadillac DeVille
  • 1972 Cadillac Fleetwood
  • 1972 Chevrolet Bel Air
  • 1972 Chevrolet Caprice
  • 1972 Chevrolet Nova
  • 1972 Oldsmobile 98
  • 1972 Oldsmobile Custom Cruiser
  • 1972 Oldsmobile Cutlass
  • 1972 Oldsmobile Cutlass Supreme
  • 1972 Oldsmobile Delta 88
  • 1972 Oldsmobile F85
  • 1972 Oldsmobile Ninety-Eight
  • 1972 Oldsmobile Toronado
  • 1972 Oldsmobile Vista Cruiser
  • 1972 Pontiac Bonneville
  • 1972 Pontiac Catalina
  • 1972 Pontiac Firebird
  • 1972 Pontiac GTO
  • 1972 Pontiac Grand Prix
  • 1972 Pontiac Grand Safari
  • 1972 Pontiac Grand Ville
  • 1972 Pontiac LeMans
  • 1972 Pontiac Ventura
  • 1973 Buick Electra
  • 1973 Buick LeSabre
  • 1973 Cadillac Calais
  • 1973 Cadillac DeVille
  • 1973 Cadillac Fleetwood
  • 1973 Chevrolet Bel Air
  • 1973 Chevrolet Caprice
  • 1973 Chevrolet Malibu
  • 1973 Chevrolet Nova
  • 1973 Oldsmobile 98
  • 1973 Oldsmobile Custom Cruiser
  • 1973 Oldsmobile Cutlass
  • 1973 Oldsmobile Cutlass Supreme
  • 1973 Oldsmobile Delta 88
  • 1973 Oldsmobile Ninety-Eight
  • 1973 Oldsmobile Omega
  • 1973 Oldsmobile Toronado
  • 1973 Oldsmobile Vista Cruiser
  • 1973 Pontiac Bonneville
  • 1973 Pontiac Catalina
  • 1973 Pontiac Firebird
  • 1973 Pontiac GTO
  • 1973 Pontiac Grand Am
  • 1973 Pontiac Grand Prix
  • 1973 Pontiac Grand Safari
  • 1973 Pontiac Grand Ville
  • 1973 Pontiac LeMans
  • 1973 Pontiac Ventura
  • 1974 Buick Electra
  • 1974 Buick LeSabre
  • 1974 Cadillac Calais
  • 1974 Cadillac DeVille
  • 1974 Cadillac Fleetwood
  • 1974 Chevrolet Bel Air
  • 1974 Chevrolet Caprice
  • 1974 Chevrolet Malibu
  • 1974 Chevrolet Nova
  • 1974 Oldsmobile 98
  • 1974 Oldsmobile Custom Cruiser
  • 1974 Oldsmobile Cutlass
  • 1974 Oldsmobile Cutlass Supreme
  • 1974 Oldsmobile Delta 88
  • 1974 Oldsmobile Ninety-Eight
  • 1974 Oldsmobile Omega
  • 1974 Oldsmobile Toronado
  • 1974 Oldsmobile Vista Cruiser
  • 1974 Pontiac Bonneville
  • 1974 Pontiac Catalina
  • 1974 Pontiac Firebird
  • 1974 Pontiac Grand Am
  • 1974 Pontiac Grand Prix
  • 1974 Pontiac Grand Safari
  • 1974 Pontiac Grand Ville
  • 1974 Pontiac LeMans
  • 1974 Pontiac Ventura
  • 1975 Cadillac Calais
  • 1975 Cadillac DeVille
  • 1975 Cadillac Fleetwood
  • 1975 Chevrolet Bel Air
  • 1975 Chevrolet Caprice
  • 1975 Chevrolet Malibu
  • 1975 Chevrolet Nova
  • 1975 Oldsmobile Custom Cruiser
  • 1975 Oldsmobile Cutlass
  • 1975 Oldsmobile Cutlass Salon
  • 1975 Oldsmobile Cutlass Supreme
  • 1975 Oldsmobile Delta 88
  • 1975 Oldsmobile Ninety-Eight
  • 1975 Oldsmobile Omega
  • 1975 Oldsmobile Vista Cruiser
  • 1975 Pontiac Astre
  • 1975 Pontiac Bonneville
  • 1975 Pontiac Catalina
  • 1975 Pontiac Grand Am
  • 1975 Pontiac Grand LeMans
  • 1975 Pontiac Grand Safari
  • 1975 Pontiac Grand Ville
  • 1975 Pontiac LeMans
  • 1975 Pontiac Ventura
  • 1976 Cadillac Calais
  • 1976 Cadillac DeVille
  • 1976 Cadillac Fleetwood
  • 1976 Chevrolet Caprice
  • 1976 Chevrolet Malibu
  • 1976 Chevrolet Nova
  • 1976 Oldsmobile Custom Cruiser
  • 1976 Oldsmobile Cutlass
  • 1976 Oldsmobile Cutlass Salon
  • 1976 Oldsmobile Cutlass Supreme
  • 1976 Oldsmobile Cutlass Tiara
  • 1976 Oldsmobile Delta 88
  • 1976 Oldsmobile Ninety-Eight
  • 1976 Oldsmobile Omega
  • 1976 Oldsmobile Starfire
  • 1976 Pontiac Astre
  • 1976 Pontiac Bonneville
  • 1976 Pontiac Catalina
  • 1976 Pontiac Grand LeMans
  • 1976 Pontiac Grand Safari
  • 1976 Pontiac LeMans
  • 1976 Pontiac Safari
  • 1976 Pontiac Ventura
  • 1977 Cadillac Fleetwood
  • 1977 Cadillac Seville
  • 1977 Chevrolet Caprice
  • 1977 Chevrolet Malibu
  • 1977 Chevrolet Nova
  • 1977 Oldsmobile Cutlass
  • 1977 Oldsmobile Cutlass Salon
  • 1977 Oldsmobile Cutlass Supreme
  • 1977 Oldsmobile Ninety-Eight
  • 1977 Oldsmobile Omega
  • 1977 Oldsmobile Starfire
  • 1977 Pontiac Astre
  • 1977 Pontiac Bonneville
  • 1977 Pontiac Catalina
  • 1977 Pontiac Grand LeMans
  • 1977 Pontiac Grand Safari
  • 1977 Pontiac LeMans
  • 1977 Pontiac Sunbird
  • 1977 Pontiac Ventura
  • 1978 Cadillac Fleetwood
  • 1978 Cadillac Seville
  • 1978 Chevrolet Caprice
  • 1978 Chevrolet Nova
  • 1978 Oldsmobile Cutlass
  • 1978 Oldsmobile Cutlass Calais
  • 1978 Oldsmobile Cutlass Salon
  • 1978 Oldsmobile Ninety-Eight
  • 1978 Oldsmobile Omega
  • 1978 Pontiac Bonneville
  • 1978 Pontiac Catalina
  • 1978 Pontiac Grand Am
  • 1978 Pontiac Grand LeMans
  • 1978 Pontiac Grand Safari
  • 1978 Pontiac Phoenix
  • 1978 Pontiac Sunbird
  • 1979 Cadillac Fleetwood
  • 1979 Chevrolet Caprice
  • 1979 Chevrolet Nova
  • 1979 Oldsmobile Cutlass
  • 1979 Oldsmobile Cutlass Calais
  • 1979 Oldsmobile Cutlass Salon
  • 1979 Oldsmobile Ninety-Eight
  • 1979 Oldsmobile Omega
  • 1979 Pontiac Bonneville
  • 1979 Pontiac Catalina
  • 1979 Pontiac Grand Am
  • 1979 Pontiac Grand LeMans
  • 1979 Pontiac Phoenix
  • 1979 Pontiac Sunbird
  • 1980 Chevrolet Caprice
  • 1980 Oldsmobile Cutlass
  • 1980 Oldsmobile Cutlass Calais
  • 1980 Oldsmobile Cutlass Salon
  • 1980 Oldsmobile Ninety-Eight
  • 1980 Oldsmobile Starfire
  • 1980 Pontiac Bonneville
  • 1980 Pontiac Catalina
  • 1980 Pontiac Grand LeMans
  • 1980 Pontiac Phoenix
  • 1980 Pontiac Sunbird
  • 1981 Chevrolet Caprice
  • 1981 Oldsmobile Cutlass
  • 1981 Oldsmobile Cutlass Salon
  • 1981 Oldsmobile Ninety-Eight
  • 1981 Pontiac Bonneville
  • 1981 Pontiac Catalina
  • 1981 Pontiac Grand LeMans
  • 1981 Pontiac Phoenix
  • 1982 Oldsmobile Ninety-Eight
  • 1982 Pontiac Phoenix
  • 1983 Oldsmobile Firenza
  • 1983 Oldsmobile Ninety-Eight
  • 1983 Pontiac J2000
  • 1983 Pontiac Phoenix
  • 1984 Oldsmobile Cutlass Ciera
  • 1984 Oldsmobile Firenza
  • 1984 Oldsmobile Ninety-Eight
  • 1984 Pontiac J2000 Sunbird
  • 1984 Pontiac Phoenix
  • 1985 Chevrolet Nova
  • 1985 Oldsmobile Calais
  • 1985 Oldsmobile Cutlass Ciera
  • 1985 Oldsmobile Firenza
  • 1985 Pontiac J2000 Sunbird

Specifications & Details


Product Specifications
Amperage Output
240
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

7127240

Weight:

18.00lbs

Internal SKU:

s7127240

Internal Product ID:

79340

Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Mech man alternator

Just awesome!!!! Gonna order another one!!! Puts out more power than states. Beautiful design!

By JOSHUA on April 5, 2015

44

found this helpful.

Awesome

Powering a true 2500w system with an xp2000 battery I can now sit at an idle and not drop below 12 volts.

By vincent on June 25, 2020 Checkmark Icon Verified purchase

Love it so much!!!!!

Very strong has not let me down yet and I love It

By Anonymous on September 13, 2018

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7127240 small

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Price: $399.00

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Perfect Match Big 3 Kit

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