Hays 13-231 Billet Steel SFI Certified Flywheel - Oldsmobile

1968-1985 Oldsmobile 307-455, External Balance, 32 LB, 166-tooth

PART# 13-231

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Overview

Upgrade your stock flywheel to a Hays SFI-approved billet steel or aluminum flywheel. Each flywheel is precision machined and engineered to handle extreme duty applications along with being designed to take the punishment of today's high horsepower street, off-road, and race engines.

Features:

  • SFI-approved â€" legal for use in racing classes that require SFI certification
  • Choose precision CNC-machined 1045 billet steel for maximum strength and durability or 6061-T6 billet aluminum construction for weight reduction and excellent heat dissipation
  • Aluminum flywheels feature forged heat treated steel ring gears and replaceable 1045 steel friction surface attached with high-grade fasteners
  • CAD designed to provide optimum performance and reliability
  • Available in Internal, External, or Zero (Neutral) balanced versions
  • Applications offered for a wide variety of engines

Product Attributes

BrandHays
Emission Code5
Product TypeFlywheels
UPC90127744925
Part Number13-231

Emissions

5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Will not fit pre-1968 engines as crankshaft have a slightly different bolt pattern.

Applications

Product Reviews

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.