1. Manifolds & Headers Offered
  2. sku: 8688861548364772
  3. GM 3750067

GM 3750067 Exhaust Heat Riser Dummy Spacer Nos General 57-74

fits model: Corvette.

3750067 General Motors 57-74 Corvette 2 Inch Exhaust Heat Riser Dummy Spacer Gm #3750067 Nos Ncrs

( Brand: Gm ), ( Part Type: Heat Exhaust Spacer Motor ), ( Manufacturer Part Number: 3750067 ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review GM General Motors 57-74 Inch Exhaust Heat Riser Dummy Spacer #3750067 Nos Ncrs fits CORVETTE

Introducing the GM Original Equipment (OE) 57-74 Corvette Exhaust Heat Riser Dummy Spacer (3750067), a crucial component designed to ensure the optimal performance and functionality of your Corvette's exhaust system. This OE part is an essential accessory for maintaining the correct clearance between the exhaust heat shield and the undercarriage of your vehicle.

The 57-74 Corvette Exhaust Heat Riser Dummy Spacer (3750067) is meticulously engineered by General Motors to meet or even exceed the original specifications of your Corvette's exhaust system. This component is manufactured using high-quality materials, ensuring that it provides the necessary insulation and clearance for the exhaust heat shield while also withstanding the rigors of daily driving.

The dummy spacer functions as a spacer between the exhaust heat shield and the undercarriage of your Corvette. Its primary role is to maintain the required clearance between these components, ensuring that the exhaust heat shield does not come into contact with the undercarriage. This contact could potentially cause damage to the undercarriage, as well as affect the performance of your exhaust system.

The 57-74 Corvette Exhaust Heat Riser Dummy Spacer (3750067) is a direct fit for all 1957 to 1974 Corvette models. It is easy to install, requiring no special tools or extensive mechanical knowledge. Simply remove the old or damaged spacer, and replace it with the new OE part. By using a genuine GM part, you can ensure a perfect fit and reliable performance, as well as maintain the value and integrity of your classic Corvette.

In summary, the GM Original Equipment 57-74 Corvette Exhaust Heat Riser Dummy Spacer (3750067) is an essential accessory for your Corvette's exhaust system. It maintains the required clearance between the exhaust heat shield and the undercarriage, ensuring optimal performance and protection for your vehicle. This OE part is manufactured using high-quality materials and is a direct fit for all 1957 to 1974 Corvette models.

Pros and Cons of Buying a GM NOS 57-74 Corvette Exhaust Heat Riser Dummy Spacer

The GM NOS (New Old Stock) 57-74 Corvette Exhaust Heat Riser Dummy Spacer is a part used in the Corvette's exhaust system to maintain proper clearance between the exhaust and other components. Here are some potential advantages and disadvantages of purchasing this part:

Pros:

1. OEM (Original Equipment Manufacturer) Part: This part is an original GM part, ensuring a perfect fit and finish.

2. Improved Performance: The heat riser dummy spacer helps maintain proper exhaust flow, potentially improving engine performance.

3. Enhanced Appearance: The OEM part can help maintain the original look of your Corvette's exhaust system.

4. Durability: New Old Stock parts are often in better condition than used parts, ensuring longer life.

Cons:

1. Cost: OEM parts can be more expensive than aftermarket alternatives.

2. Availability: NOS parts may be harder to find than commonly used parts, leading to longer wait times.

3. Limited Function: The heat riser dummy spacer does not have a functional purpose, it only maintains proper clearance.

Conclusion:

The decision to buy a GM NOS 57-74 Corvette Exhaust Heat Riser Dummy Spacer depends on your priorities. If you value the OEM fit, potential performance improvement, and the original look, the higher cost and potential wait time may be worth it. However, if you're looking for a functional part or are budget-conscious, an aftermarket alternative may be a better choice.

Recommendation:

If you prioritize the OEM fit, improved performance, and original appearance, and have the budget for it, purchasing the GM NOS 57-74 Corvette Exhaust Heat Riser Dummy Spacer is a recommended choice. If budget is a concern, consider looking into aftermarket alternatives.

part # 3750067 prices

  • $50.00-$54.99

specifications maniheader:

  • for models: Corvette
  • brand: Gm
  • part type: Heat Exhaust Spacer Motor
  • manufacturer part number: 3750067
  • vintage part: Yes
  • country of origin: United States

seller maniheader:

  • rating: 99.8%
  • # reviews: 5880

shipping maniheader:

  • type: Fixed
  • transit: 5-11 Days
  • service: USPS Ground Advantage, USPS Priority Mail
  • carrier: USPS
  • class: Standard, Expedited
  • cost: $9.95

offer maniheader:

  • availability: In Stock
  • sold: 0
  • started: October 24, 2025
  • options: Ship-to-home
  • quantity: 1

payments maniheader:

  • credit card: Mastercard
  • other
  • wallet: Apple-pay

general maniheader:

  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
  • condition: New

returns maniheader:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for models: corvette, part type: heat exhaust spacer motor, vintage part: yes, country of origin: united states,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, sku: 8688861548364772,

Gm 3750067 Is Similar To:

maniheader logo
2 offers $50.00–$54.99 USD
  • Offer #1: $54.99 price + $11.33 delivery = $66.32* total. Ideal for applications originally equipped without a heat riser valve. Restore proper exhaust flow and cold-start performance with this reproduction exhaust manifold heat riser for GM small block V8 engines.+$11.33 shipping
  • Offer #2: $50.00 price + $17.00 delivery = $67.00* total. Chevrolet Cars 58-74 used the exhaust heat riser valve. Corvette Exhaust Heat Valve GM Spacer Chevrolet 2.01957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974.+$17.00 shipping