Frame Extension1978-1983 GM G-Body18 in. x 3 in. x 1 in.Black Powdercoat1/8 (.125) in. Thick SteelSold Individually JEGS 64718 frame extension is designed to replicate the longer driver-side frame rail of the 1978-1983 GM G-Body cars. This allows for the proper installation of a JEGS transmission crossmembers on 1978-1983 G-Body Cars.JEGS 555-64718 Frame Extension Includes: (4) 7/16 in. -20 Thread x 1 1/4 (.250) in. Under Head Length x 5/8 (.625) in. Hex Bolts (4) 7/16 in. -20 Thread x 5/8 (.625) in. Hex Nuts (8) 15/16 (.938) in. OD x 1/2 (.500) in. ID Flat WashersJEGS 555-64718 Frame Extension Fitment: 1978-1983 Buick Regal (including Grand National) 1978-1983
JEGS 64718 Frame Extension 1978-1983 GM G-Body 18 in. x 3 in. x 1 in. Black Powd

Frame Extension
  • 1978-1983 GM G-Body
  • 18 in. x 3 in. x 1 in.
  • Black Powdercoat
  • 1/8 (.125) in. Thick Steel
  • Sold Individually

    JEGS 64718 frame extension is designed to replicate the longer driver-side frame rail of the 1978-1983 GM G-Body cars. This allows for the proper installation of a JEGS transmission crossmembers on 1978-1983 G-Body Cars.

    JEGS 555-64718 Frame Extension Includes:
  • (4) 7/16 in. -20 Thread x 1 1/4 (.250) in. Under Head Length x 5/8 (.625) in. Hex Bolts
  • (4) 7/16 in. -20 Thread x 5/8 (.625) in. Hex Nuts
  • (8) 15/16 (.938) in. OD x 1/2 (.500) in. ID Flat Washers
  • JEGS 555-64718 Frame Extension Fitment:
  • 1978-1983 Buick Regal (including Grand National)
  • 1978-1983 Chevrolet Malibu
  • 1978-1983 Chevrolet Monte Carlo
  • 1978-1983 Oldsmobile Cutlass
  • 1978-1983 Pontiac Grand Prix
  • JEGS 555-64718 Frame Extension Note:
  • Some 1983 model G-body vehicles were originally equipped with a 200-4R transmission and will not require this frame extension. Some 1984 G-body vehicles came with the early (pre-1984) frames and will require this frame extension. If you are unsure, 1984 and later models will feature two mounting locations for the transmission crossmember approximately 14 in. behind the front set of mounting holes.
  • From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    From the iconic mail order catalog to a fully-stocked digital commerce experience, we have built a preferred destination for every gear-head, professional racer, weekend warrior and restoration nut who wants to take their vehicle to the next level.

    Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. 

    Today, more than 350 people are employed by JEGS and the business draws in hundreds of thousands of customers each year. Yet, we maintain the culture stared by Jeg Coughlin from the very beginning: a family-run performance shop that preserves a trusted relationship with each and every customer.

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    SALES TAX

    Taxes may be applicable at checkout 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    SALES TAX

    Taxes may be applicable at checkout 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SALES TAX

    Taxes may be applicable at checkout 

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SALES TAX

    Taxes may be applicable at checkout 

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    SALES TAX

    Taxes may be applicable at checkout 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    SALES TAX

    Taxes may be applicable at checkout 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    PAYMENT

    We accept the following forms of payment:

    • PayPal
    • VISA
    • Discover
    • MasterCard
    • American Express

    SALES TAX

    Taxes may be applicable at checkout. 

    SHIPPING

    Standard shipping is 1-5 business day delivery on most items.

    Additional delivery days may apply in some instances, such as hazardous items, mounted tires and wheels, oversized items, truck freight items, select zip codes, Global Shipping Program and remote delivery areas. 

    RETURN POLICY

    If you are not completely satisfied, return the new/unused item in the original box pre-paid (customer is responsible for shipping cost) postmarked within 90 days of purchase, with a copy of the invoice, for a refund/exchange. Once a return has been approved, the credit will be processed within 2 days to original form of payment. A 15% restocking fee will be deducted from any item returned more than 90 days after the ship date. A 15% reboxing fee will be deducted for any item not returned in its original packaging. 

    WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov