There are 8 choices

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classic style (creased door skin)
- hybrid option (opt HP2)
  - (inside transmission bell housing)
    - generator rotor (inner)
    - generator stator (outer)
- Without hybrid option
  - 105 amp (opt K68)
  - 145 amp (opt KG3)
    - Special Equipment Option (opt 8C6)
    - Without Special Equipment Option
  - 160 amp (opt KW1)
new style (smooth door skin)
- 145 amp (opt KG3)
- 160 amp (opt KW1)

Alternator for 2007 GMC Sierra 1500 HD

Fits: new style smooth door skin 145 amp opt KG3 (change)

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