Hays Steel SFI Certified Flexplate - GM LS Engines - 40-508
SKU: 85699670043

Hays Steel SFI Certified Flexplate - GM LS Engines - 40-508

Sale price$137.67 Regular price$152.97
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Description

Hays Steel SFI Certified Flexplate - GM LS Engines - 40-508Overview: 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

Overview:

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

 

Application:

Year Make Model Submodel Engine Size
2008 - 2013 Chevrolet Corvette Base 376/6.2L V8
2001 - 2006 Chevrolet Silverado 2500 HD LS 403/6.6L V8
2001 - 2005 Chevrolet Silverado 2500 HD Base 364/6.0L V8
2004 Chevrolet Silverado 1500 LS 364/6.0L V8
2004 Chevrolet Silverado 1500 Z71 325/5.3L V8
1999 - 2006 Chevrolet Silverado 1500 LT 325/5.3L V8
1999 - 2005 Chevrolet Silverado 1500 Base 325/5.3L V8
2001 - 2006 Chevrolet Silverado 3500 LS 403/6.6L V8
2001 - 2006 Chevrolet Silverado 3500 LT 364/6.0L V8
2001 - 2006 Chevrolet Silverado 3500 LS 364/6.0L V8
2003 - 2006 Chevrolet Silverado 2500 HD WT 364/6.0L V8
2001 - 2005 Chevrolet Silverado 3500 Base 403/6.6L V8
2001 - 2005 Chevrolet Silverado 3500 Base 364/6.0L V8
2012 - 2017 Chevrolet Camaro ZL1 376/6.2L V8
2001 - 2006 Chevrolet Silverado 3500 LT 403/6.6L V8
2001 - 2005 Chevrolet Silverado 2500 HD Base 403/6.6L V8
2004 Chevrolet Silverado 1500 LT 364/6.0L V8
2001 - 2006 Chevrolet Silverado 2500 HD LT 403/6.6L V8
2001 - 2006 Chevrolet Silverado 2500 HD LS 364/6.0L V8
2014 - 2017 Chevrolet Corvette Stingray 376/6.2L V8
2015 - 2017 Chevrolet Corvette Z06 376/6.2L V8
2009 - 2012 Chevrolet Colorado LT 325/5.3L V8
2014 - 2015 Chevrolet Camaro Z/28 427/7.0L V8
2004 - 2006 Chevrolet C5500 Kodiak C5E042 403/6.6L V8
2005 - 2006 Chevrolet C5500 Kodiak C5E044 403/6.6L V8
2007 Chevrolet Silverado 3500 Classic LS 364/6.0L V8
2007 Chevrolet Silverado 3500 Classic LT 364/6.0L V8
2007 Chevrolet Silverado 2500 HD Classic LT 364/6.0L V8
1999 - 2000 Chevrolet Silverado 2500 Base 325/5.3L V8
1999 - 2004 Chevrolet Silverado 2500 Base 364/6.0L V8
1999 - 2000 Chevrolet Silverado 2500 LS 325/5.3L V8
1999 - 2000 Chevrolet Silverado 2500 LT 325/5.3L V8
1999 - 2004 Chevrolet Silverado 2500 LS 364/6.0L V8
2014 - 2016 Chevrolet Corvette Z51 376/6.2L V8
2007 Chevrolet Silverado 2500 HD Classic LS 364/6.0L V8
2005 - 2007 Chevrolet Corvette Base 364/6.0L V8
2001 - 2006 Chevrolet Silverado 2500 HD LT 364/6.0L V8
2004 - 2006 Chevrolet Silverado 3500 WT 364/6.0L V8
2002 - 2006 Chevrolet Silverado 1500 WT 325/5.3L V8
2010 - 2017 Chevrolet Camaro SS 376/6.2L V8
1999 - 2006 Chevrolet Silverado 1500 LS 325/5.3L V8
2004 - 2006 Chevrolet C4500 Kodiak C4E042 403/6.6L V8
2005 - 2006 Chevrolet C4500 Kodiak C4E044 403/6.6L V8
2004 - 2006 Chevrolet C4500 Kodiak C4V042 403/6.6L V8
2011 Chevrolet Corvette Z06 Carbon 427/7.0L V8
2006 - 2013 Chevrolet Corvette Z06 427/7.0L V8
2009 - 2013 Chevrolet Corvette ZR1 376/6.2L V8
2007 Chevrolet Silverado 1500 Classic LS 325/5.3L V8
2007 Chevrolet Silverado 1500 Classic LT 325/5.3L V8
2007 Chevrolet Silverado 3500 Classic WT 364/6.0L V8
2007 Chevrolet Silverado 2500 HD Classic WT 364/6.0L V8
1999 - 2004 Chevrolet Silverado 2500 LT 364/6.0L V8
2011 - 2012 Chevrolet Camaro 1SS 376/6.2L V8
2010 - 2017 Chevrolet Corvette Grand Sport 376/6.2L V8
2004 - 2006 Chevrolet Silverado 1500 Hybrid 325/5.3L V8
2004 - 2006 Chevrolet Silverado 3500 WT 403/6.6L V8
2004 - 2006 Chevrolet Silverado 2500 HD WT 403/6.6L V8
2004 Chevrolet Silverado 2500 WT 364/6.0L V8
2011 - 2012 Chevrolet Camaro 2SS 376/6.2L V8
2004 - 2006 Chevrolet C4500 Kodiak C4C042 403/6.6L V8
2005 - 2006 Chevrolet SSR Base 364/6.0L V8
2007 Chevrolet Silverado 1500 Classic WT 325/5.3L V8
2005 - 2006 Chevrolet C4500 Kodiak C4C044 403/6.6L V8
2004 - 2006 Chevrolet C5500 Kodiak C5C042 403/6.6L V8
2004 - 2006 Chevrolet C5500 Kodiak C5V042 403/6.6L V8
2004 - 2006 Chevrolet C5500 Kodiak C5U042 403/6.6L V8
2005 - 2006 Chevrolet C5500 Kodiak C5C044 403/6.6L V8
2015 - 2017 Chevrolet SS Base 376/6.2L V8
2013 Chevrolet Corvette 427 427/7.0L V8
2007 Chevrolet Silverado 3500 Classic LS 403/6.6L V8
2007 Chevrolet Silverado 2500 HD Classic LT 403/6.6L V8
2007 Chevrolet Silverado 2500 HD Classic LS 403/6.6L V8
2007 Chevrolet Silverado 3500 Classic LT 403/6.6L V8
2007 Chevrolet Silverado 2500 HD Classic WT 403/6.6L V8
2008 Chevrolet Corvette 427 Limited Edition Z06 427/7.0L V8
2004 - 2006 Chevrolet C4500 Kodiak C4U042 403/6.6L V8
2007 Chevrolet Silverado 3500 Classic WT 403/6.6L V8
2002 Chevrolet Silverado 1500 HD LT 364/6.0L V8
2007 Chevrolet Silverado 1500 Classic Hybrid 325/5.3L V8
2004 Chevrolet Silverado 1500 SS 364/6.0L V8
2002 Chevrolet Silverado 1500 HD LS 364/6.0L V8
1999 - 2000 Chevrolet K3500 LS 350/5.7L V8
1999 - 2000 Chevrolet K3500 LS 395/6.5L V8
1997 - 1998 Chevrolet K3500 Silverado 395/6.5L V8
1997 - 1998 Chevrolet K3500 Silverado 350/5.7L V8
1997 - 1998 Chevrolet K3500 Cheyenne 395/6.5L V8
1997 - 1998 Chevrolet K3500 Cheyenne 350/5.7L V8
1997 - 2000 Chevrolet K3500 Base 350/5.7L V8
1999 - 2000 Chevrolet K2500 LS 395/6.5L V8
1998 Chevrolet K2500 Cheyenne 305/5.0L V8
1997 - 1998 Chevrolet K2500 Silverado 350/5.7L V8
1997 - 2000 Chevrolet K2500 Base 395/6.5L V8
1997 - 1998 Chevrolet K2500 Cheyenne 350/5.7L V8
1997 - 1998 Chevrolet K2500 Cheyenne 395/6.5L V8
1999 - 2005 Chevrolet Silverado 1500 Base 294/4.8L V8
1999 - 2006 Chevrolet Silverado 1500 LS 294/4.8L V8
1997 - 1999 Chevrolet P30 Base 395/6.5L V8
2002 - 2006 Chevrolet Silverado 1500 WT 294/4.8L V8
1999 - 2006 Chevrolet Silverado 1500 LT 294/4.8L V8
1997 - 1998 Chevrolet K1500 Silverado 305/5.0L V8
1997 - 1998 Chevrolet K1500 Silverado 350/5.7L V8
1997 - 1998 Chevrolet K1500 Cheyenne 395/6.5L V8
1997 - 1998 Chevrolet K1500 WT 305/5.0L V8
1998 - 2002 Chevrolet Camaro Z28 SS 350/5.7L V8
1997 - 1999 Chevrolet C2500 400 SS 350/5.7L V8
1997 - 1999 Chevrolet C2500 Custom 350/5.7L V8
1997 - 2004 Chevrolet Corvette Base 350/5.7L V8
1997 - 2002 Chevrolet Camaro Z28 350/5.7L V8
1997 - 2002 Chevrolet C3500HD Base 395/6.5L V8
1997 - 1998 Chevrolet K2500 Silverado 305/5.0L V8
1999 - 2000 Chevrolet K2500 LS 350/5.7L V8
1997 - 2000 Chevrolet C2500 Base 395/6.5L V8
1997 - 2000 Chevrolet C2500 Base 350/5.7L V8
1997 - 1999 Chevrolet C2500 Base 305/5.0L V8
1997 - 1998 Chevrolet C1500 WT 395/6.5L V8
1997 - 1998 Chevrolet C1500 Cheyenne 350/5.7L V8
1997 - 1998 Chevrolet C1500 Cheyenne 305/5.0L V8
1997 Chevrolet C1500 Base 350/5.7L V8
1998 Chevrolet C2500 WT 350/5.7L V8
1998 Chevrolet C2500 WT 395/6.5L V8
1999 - 2000 Chevrolet C2500 LS 350/5.7L V8
1999 - 2000 Chevrolet C2500 LS 395/6.5L V8
1997 - 1998 Chevrolet C2500 Cheyenne 305/5.0L V8
1998 Chevrolet K2500 WT 350/5.7L V8
1998 Chevrolet K2500 WT 305/5.0L V8
1997 - 2000 Chevrolet K3500 Base 395/6.5L V8
1997 - 1998 Chevrolet C1500 Cheyenne 395/6.5L V8
1997 Chevrolet C1500 Base 305/5.0L V8
1997 - 2000 Chevrolet K2500 Base 350/5.7L V8
1997 - 1999 Chevrolet P30 Base 350/5.7L V8
1999 - 2000 Chevrolet C3500 LS 350/5.7L V8
1999 - 2000 Chevrolet C3500 LS 395/6.5L V8
1997 - 1998 Chevrolet C3500 Cheyenne 395/6.5L V8
1997 - 1998 Chevrolet C3500 Cheyenne 350/5.7L V8
1997 - 2000 Chevrolet C3500 Base 350/5.7L V8
2007 Chevrolet Silverado 1500 Classic LS 294/4.8L V8
1997 - 1998 Chevrolet C3500 Silverado 350/5.7L V8
1997 - 1998 Chevrolet C3500 Silverado 395/6.5L V8
1997 - 1998 Chevrolet K1500 Cheyenne 305/5.0L V8
1997 - 1998 Chevrolet K1500 Silverado 395/6.5L V8
1997 - 1998 Chevrolet K1500 Cheyenne 350/5.7L V8
1997 Chevrolet K1500 Base 305/5.0L V8
1997 Chevrolet K1500 Base 350/5.7L V8
1997 - 1998 Chevrolet K2500 Silverado 395/6.5L V8
2007 Chevrolet Silverado 1500 Classic LT 294/4.8L V8
1997 - 2000 Chevrolet C3500 Base 395/6.5L V8
1997 - 1998 Chevrolet C2500 Silverado 395/6.5L V8
1997 - 1998 Chevrolet C2500 Cheyenne 395/6.5L V8
1999 Chevrolet C2500 LS 305/5.0L V8
1997 - 1998 Chevrolet C1500 Silverado 305/5.0L V8
1997 - 1998 Chevrolet C2500 Silverado 305/5.0L V8
1997 - 1998 Chevrolet C2500 Silverado 350/5.7L V8
1997 - 1998 Chevrolet K1500 WT 395/6.5L V8
2000 - 2002 Chevrolet Silverado 2500 Cheyenne 350/5.7L V8
1997 - 1999 Chevrolet C2500 Cheyenne 350/5.7L V8
2000 - 2002 Chevrolet Silverado 2500 Custom 350/5.7L V8
2007 Chevrolet Silverado 1500 Classic WT 294/4.8L V8
1997 Chevrolet K1500 Base 395/6.5L V8
2001 - 2004 Chevrolet Corvette Z06 350/5.7L V8
1997 Chevrolet C1500 Base 395/6.5L V8
1997 - 1998 Chevrolet C1500 Silverado 395/6.5L V8
1998 Chevrolet C2500 WT 305/5.0L V8
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car 350/5.7L V8
1997 - 1998 Chevrolet K1500 WT 350/5.7L V8
1997 - 1998 Chevrolet C1500 WT 350/5.7L V8
1997 - 1998 Chevrolet C1500 Silverado 350/5.7L V8
2003 Chevrolet Corvette 50th Anniversary Edition 350/5.7L V8
2000 - 2002 Chevrolet Silverado 2500 400 SS 350/5.7L V8
1998 Chevrolet Corvette Indianapolis 500 Pace Car 350/5.7L V8
1999 Chevrolet C2500 Austera 350/5.7L V8
1997 - 1998 Chevrolet C1500 WT 305/5.0L V8
2004 Chevrolet Silverado 1500 Z71 294/4.8L V8
1998 Chevrolet K2500 WT 395/6.5L V8

 

Specs:

# of Teeth 168
Application GM LS
Bolt Pattern GM 10-1/2"
Bolt Pattern GM 10-3/4"
Bolt Pattern GM 11-1/2"
Bolt Pattern GM 11-1/8"
Brand Hays
Centerplate Thickness 4 mm
Emission Code 5
Engine Balance Internal
Finish Silver
Material Steel
Product Type Flexplates
SFI Approved Yes
SFI Certification 29.1
Style Quick Launch
Warranty 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85699670043

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A
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anon
Battle Creek, US
★★★★★ 4
Good pillow, useless case
Color: Grey, Size: S-16 X 12 Inch
Nice pillow, small and portable. No horrible smell. Negative 1 star for the carrying case which is twice the size of the pillow. If you think you will use it to compress your pillow for travel, think again. It just expands back in the bag. Totally useless unless you’d like to store rocks in the bag instead.
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Reviewed in the United States on March 3, 2026
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ltrantech
Whiting, US
★★★★★ 5
Great for car naps and family road trips.
Color: Grey, Size: S-16 X 12 Inch, Color: Grey, Size: S-16 X 12 Inch
Adjusts to any position, no weird smell, packs well and hangs from headrest. Soft, supportive, and easy to clean after kid messes. Slightly bulkier than some, but the comfort is worth it!
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Reviewed in the United States on February 12, 2026
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Nancy Sullivan
San Leandro, US
★★★★★ 5
Love size. And it’s comfortable
Color: Apricot Pink, Size: M-17.7 X 13.8 Inch
This travel pillow is firm but yet soft I was impressed with it and I love the size.
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Reviewed in the United States on April 22, 2026
E
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Emily
Massapequa, US
★★★★★ 5
A Travel Pillow That Actually Works!
Color: Sky Blue, Size: M-17.7 X 13.8 Inch
I fly fairly often and have gone through a few different pillows that I thought would be great but left me disappointed! I’m honestly so happy with this pillow. It fits easily in my backpack, and it doesn’t look ridiculous if I hanging it on my backpack if I’m packing a lot. It’s thick enough to support my head against the window/wall without feeling too bulky. I usually sleep really poorly on planes, and I’m not going to say that this was the magic charm, but I definitely slept more comfortably. It’s also great support against your lower back if you’re not sleeping. Some have mentioned a smell, but honestly it just smells like memory foam usually does and it’s not overpowering. I’ve only used for a few flights so far but I love it!
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Reviewed in the United States on January 22, 2026
D
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Darth Vader
Phoenix, US
★★★★★ 3
Nice travel pillow
Color: Apricot Pink, Size: S-16 X 12 Inch
Works well as a pillow to support my elbow while I’m driving. It was too full to use as a pillow to place my head on at night since I am a side sleeper. There is no way to remove some of the memory foam to make it flat enough to use as my bedtime pillow. I liked the soft pink zippered cover as it works well and makes it easy to remove and wash. I didn’t notice any smell.
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Reviewed in the United States on March 18, 2026

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