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Mechman 240 Amp High Output Alternator for GM 4.2L six cylinder, two pin plug Open media 1 in gallery view
Mechman 240 Amp High Output Alternator for GM 4.2L six cylinder, two pin plug Open media 2 in gallery view
Mechman 240 Amp High Output Alternator for GM 4.2L six cylinder, two pin plug
Mechman 240 Amp High Output Alternator for GM 4.2L six cylinder, two pin plug
Mechman 240 Amp High Output Alternator for GM 4.2L six cylinder, two pin plug

Mechman 240 Amp High Output Alternator GM 4.2L 6-Cylinder - 2 Pin Plug

Regular price $349.00

Custom Built: Estimated lead time of 5-15 Business days.

Vendor:Mechman
Type:High Output Alternators
SKU:8498240
In stock
Sale Ends November 19th, 2026
Minimum Purchase of $349.00
*Applies to Mechman, Limitless Lithium & XS Power Products ONLY
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    G Series

    Based on our late model large case GM housings, the tried-and-true G series of alternators are our best sellers. Reasonably priced, these units feature solid copper custom rectifiers with huge 65 amp diodes for great durability. Premium bearings ensure long life even in hot or abusive conditions.

    Installation Notes:

    This unit comes equipped with a smaller 1.75 inch diamter alternator pulley, and will require a slightly shorter drive belt for proper belt tension. Not recommended for use above 5,000 RPM engine speed.


    Name Model Engine Year(s) Amperage
    BUICK Rainier 4.2 07 240a
    CHEVROLET Trailblazer 4.2 07-09 240a
    GMC Envoy 4.2 07-09 240a