Ignitions and Electrical› Charging Systems

ACDelco

145 Amp Alternator

$170.50

SKU: 20881337

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The ACDelco 20881337 is a GM Genuine Parts alternator designed as an exact replacement for your original GM vehicle's alternator. This newly manufactured unit provides power to the vehicle's electrical systems and charges the battery while the engine is running. It features a 145 Amp output, a 12 VDC system voltage, and a clockwise rotating 6-Groove serpentine pulley.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandACDelco
Part Number20881337
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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