Skip to main content
ASK OUR EXPERTS
1-866-464-6553

Hays Steel SFI Certified Flexplate - GM LS Engines

Fits 1997-2017 GM LS 4.8/5.3/6.0/6.2/7.0L - 168 Tooth - Internal Balanced - SFI

Part # 40-508 Be the first to write a review

Hays Steel SFI Certified Flexplate - GM LS Engines

In Stock
Free Shipping - Lower 48 US States
$211.95
Add to Wishlist
5

Emissions

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.

See Emissions Details
Hays SFI Approved heavy duty flexplates for are constructed of a thicker than stock steel plate, enabling them to withstand the stress of high-stall torque converters and high-RPM engines. While factory stock plates tend to crack around the crankshaft hub when punished under high torque and RPM conditions, the 4mm thick center plate utilized on a Hays flexplate handles the brute force. These flexplates are supplied with a precision double welded ring gear and feature multiple engine and transmission bolt patterns. All Hays flexplates are zinc-dichromate plated to resist corrosion and are SFI certified under specification 29.1.

Features:

  • SFI-approved – legal for use in racing classes that require SFI certification
  • Flexplate features a precision double welded ring gear
  • Has 4mm thick center plate to resist cracking near crankshaft flange
  • Zinc-dichromate plated to resist corrosion
  • CAD designed to provide optimum performance and reliability
  • Available in Internal or External balanced versions
  • Applications offered for a wide variety of engine and transmission bolt patterns

About Hays

Looking for clutches, flywheels, flexplates, or torque converters? Shop the selection at Holley.com to find what you need.

# of Teeth168
ApplicationChevrolet
Bolt Circle3 x 10.75 inch
3 x 11.00 inch
3 x 11.5 inch
6 x 11.5 inch
Brand Hays
Centerplate Thickness4 mm
Emission Code5
EngineGM Gen III/IV (LS)
Engine BalanceInternal
FinishSilver
MaterialSteel
Product TypeFlexplates
SFI ApprovedYes
SFI Certification29.1
StyleQuick Launch
Transmission4L60E/4L65E
4L80E/4L85E
700R4
TH350
TH400
Warranty90 Day
UPC090127062388
Part Number40-508
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.
IS NOT direct replacement for "long crank" LS engines. (1999-2000 6.0L)
90 Day: See Details
Reviews

    Your Review

    *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

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