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Aeromotive Billet LT1 Crank 34% Underdrive Pulley

SKU: AER21101

Crankshaft Pulleys

AER Pulleys...

Aeromotive Billet LT1 Crank 34% Underdrive Pulley

SKU: AER21101

Crankshaft Pulleys

AER Pulleys...

A$343.40
IN STOCK! Est Ship 3-7 Days days. In stock at 1 location (only 1 available)

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Description

Pulley

Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace tolerances and procedures, three generations of track experience, and a meticulous approach to engineering, Aeromotive Fuel Systems has become the absolute pinnacle of performance fuel delivery.

Additional Information

Billet, LT1 Crank. 34% Under drive Pulley (Serpentine Belt).

Part Type

Alternator Pulley

Data: v4.2 - Upd: 2026-11-09 03:51:41

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 15:41:54

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Aeromotive
StreetFX SKU aer21101
SFX Item ID 4495816
Accounting SKU aer-21101
Manufacturer SKU 21101
Manufacturer UPC 684980000184
Alternative References AEI-21101

Crankshaft Pulley, Serpentine, 6-Groove, Billet Aluminum, Polished, Chevy, Pontiac, 5.7L, Each

Aeromotive LT1 billet aluminum crankshaft pulleys are made from billet CNC-machined 6061-T6. They are engineered to reduce accessory loads and increase rear-wheel horsepower for your vehicle. These are 34 percent underdrive pulleys with a hand-polished finish to dress up your engine's belt system and allow for easy cleaning. Mounting hardware is included.

Product Attributes
BrandAeromotive
Manufacturer's Part Number21101
Part TypeCrankshaft Pulleys
Product LineAeromotive LT1 Billet Aluminum Crankshaft Pulleys
UPC00684980000184
Pulley StyleSerpentine
Crankshaft Pulley Bolt Hole QuantityThree
Groove Quantity6
UnderdriveYes
Underdrive Percentage34 percent
OverdriveNo
Hardware IncludedYes
Crankshaft Nose Cover IncludedNo
Pulley MaterialAluminum
Pulley FinishPolished
QuantitySold individually.

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