Engines and Components› Crankshafts and Components

MARCH PERFORMANCE

85-87 305-350 Chevy Alum Crankshaft Pulley

$113.58

SKU: M05O 4021-08

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The March Performance 4021-08 is a crankshaft pulley designed for 1985-1987 GM vehicles with 305-350 ci engines. It features a serpentine and V-belt pulley style and has a three-bolt hole quantity for crankshaft pulley mounting.

This pulley has a groove quantity of 5 for serpentine belts and 2 for V-belts. It is not an underdrive pulley.

Fitment

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Specifications

BrandMARCH PERFORMANCE
Part NumberM05O 4021-08

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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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