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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.
Hays Steel SFI Certified Flexplate - GM LS Engines - 40-508
$305.95
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
Product Specifications:
- Product Details: Fits 1997-2017 GM LS 4.8/5.3/6.0/6.2/7.0L - 168 Tooth - Internal Balanced - SFI
- # of Teeth: 168
- Application: Chevrolet
- Bolt Circle: 3 x 10.75 inch, 3 x 11.00 inch, 3 x 11.5 inch, 6 x 11.5 inch
- Bolt Pattern: GM 10-1/2", GM 10-3/4", GM 11-1/2", GM 11-1/8"
- Centerplate Thickness: 4 mm
- Engine: GM Gen III/IV (LS)
- Engine Balance: Internal
- Finish: Silver
- Material: Steel
- Part Type: Automatic Transmission Flexplate
- Product Type: Flexplates
- SFI Approved: Yes
- SFI Certification: 29.1
- Style: Quick Launch
- Transmission: 4L60E/4L65E, 4L80E/4L85E, 700R4, Category, TH350, TH400
Installation Notes:
IS NOT direct replacement for "long crank" LS engines. (1999-2000 6.0L)