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

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

SKU: 40-508
Regular price $211.95 USD
Regular price Sale price $211.95 USD
Sale Sold out

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

 

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

 

# 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
View full details

Policies and FAQs

Return Policy

We accept returns on products within 30 days of delivery. Return shipping is the responsibility of the buyer unless we, the seller, are at fault.

Fault reasons include but are not limited to:
  • Buyer was shipped the wrong product
  • Buyer was shipped a damaged product
  • The product page had incorrect fitment and the part does not fit the Buyer's vehicle
 
The Buyer will not be refunded outbound shipping unless the Seller (Modern Day Muffler & Brake) is at fault.
 
In cases where the Buyer purchases and ships the return please note that if the Shipper (ex. USPS, FedEx, UPS, etc.) loses the return we will not be able to offer a refund as the Buyer must contact the Shipper and make a claim.
 
All products must be returned in original condition, meaning that the product must not be damaged, installed, or missing pieces/parts. If the product is not in original condition a deduction will be issued of up to 50% of the purchase price of the product.
 
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
 
When we, the seller, are at fault, please Contact Us for a return label, products returned with a shipping label not provided by the seller will not be refunded to the buyer. Please also note that our return labels are issued with the dimensions and weight of the original shipment, if the product is being returned in any box/package besides the original please Contact Us with the dimensions and weight.

Returns must be sent to this address:
Modern Day Muffler & Brake
774 Broad Street
Wadsworth, OH 44281
 
Products returned directly to a manufacturer or the incorrect address may be issued a deduction or denied a refund entirely.
 
If a product was delivered outside the 30 day return window or is no longer in original condition please contact us as we may be able to issue a refund in store credit and/or with a deduction. If this is the case please Contact Us as these situations are handled on a case by case basis.
 
If there are any questions, concerns, or doubts about return eligibility please Contact Us and we would be more than happy to assist you.

This page and policy were last updated: July 14th 2023

FAQs

This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.

Our kits include all of the solid metal lines for that section of the vehicle.

We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

  • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
  • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.

Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

Unfortunately we cannot offer single lines outside of kits

Yes, all are covered by the manufacturer's standard warranty. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash.

We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card.

Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something we have manufactured at time of sale.

Yes please send us a message through our custom orders page.

Yes, but items sent out of the continental U.S. may incur additional charges based on their destination

The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

Yes! Thank you for your military service!

Still have a question or concern?  Please contact use our contact us form!

Yes! Thank you for your military service!

Warranty Information

Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

Product Notices

*NOTE: Product images may not reflect actual product appeareance.