Description
Product Overview
The Moroso 3-8 pitch crankshaft pulley is engineered for enthusiasts who demand precision and durability. Machined from a solid billet of aluminum, the pulley offers exceptional rigidity while remaining lightweight. Anodized for corrosion resistance, it maintains its finish even under high‑temperature engine conditions. Designed to fit 1″ diameter keyed drive mandrels, the pulley ensures a secure, slip‑free connection to the crankshaft, delivering consistent power transfer and smoother engine operation.
Usage

Ideal for both street and track applications, this pulley excels in high‑performance engines, racing builds, and daily drivers seeking improved throttle response. Its 3-8 pitch design aligns with standard automotive timing belts, making it a straightforward upgrade for any vehicle that uses a compatible crankshaft pulley system. Installers benefit from the precise fit, reducing installation time and minimizing the need for additional modifications.
Why Choose Us
Moroso’s reputation for quality craftsmanship is reflected in every detail of this pulley. The billet aluminum construction provides superior strength-to-weight ratio compared to cast alternatives. Anodizing not only enhances aesthetic appeal but also protects against wear, rust, and chemical exposure. Each unit undergoes rigorous quality control to ensure dimensional accuracy, guaranteeing a perfect match for your engine’s specifications.
Key Features
- Billet aluminum construction for high strength and low weight
- Anodized finish for extended durability and corrosion resistance
- 3-8 pitch design compatible with standard timing belts
- Fits 1″ keyed drive mandrels for secure, slip‑free installation
- Precision‑machined tolerances ensure optimal engine performance
FAQ
Is this pulley compatible with my vehicle?
The 3-8 pitch design fits most engines that use a 1″ keyed drive mandrel. Verify your crankshaft specifications to ensure compatibility before purchase.
What are the benefits of an aluminum pulley over a steel one?
Aluminum reduces rotational mass, improving engine response and acceleration, while still offering sufficient strength for high‑performance use.
How does the anodized coating protect the pulley?
Anodizing creates a hard, wear‑resistant surface that resists corrosion, heat, and chemical exposure, extending the pulley’s service life.
Can I install this pulley myself?
Yes, the pulley is designed for straightforward installation with standard tools. Ensure the crankshaft is clean and the keyway matches the 1″ mandrel.
What warranty does Moroso provide?
Moroso offers a limited warranty covering manufacturing defects, giving you confidence in the product’s quality and durability.




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