1. USED Car/Truck Carburetors Items
  2. sku: 8858521982564762
  3. DASHMAN RPK.250

DASHMAN RPK.250 Big Carburetor Phenolic Riser Insulator Gm 2GC 2GV Spacer 1/4

fits model: Gto, 250. make: Rochester.

Rpk.250 Dashman For Rochester 2gc 2gv Big Carburetor Phenolic Riser Insulator Gm Gto Spacer 1/4 Inch

( Brand: Dashman ), ( Manufacturer Part Number: RPK.250 ), ( Items Included: Gasket, Mounting Hardware ), ( Country Of Manufacture: United States ), ( Material: Phenolic ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Choke Type: Both ), ( Type: Carburetor ), ( Features: Down Draft ), ( Universal Fitment: No )

Review DASHMAN For Rochester 2gc 2gv Big Carburetor Phenolic Riser Insulator Gm Spacer 1/4 Inch fits GTO 250

The Dashman RPK.250 is a high-performance riser insulator specifically designed for use with the Rochester 2GC and 2GV big carburetors, as well as the GM GTO. This insulator is made from premium phenolic material, which provides excellent insulation properties, ensuring that heat is efficiently transferred away from the carburetor and maintaining optimal engine performance.

The Dashman RPK.250 is a quarter-inch thick insulator, making it an ideal choice for applications where a thicker insulation layer is required. It is designed to fit securely on top of the carburetor, replacing the stock insulator and providing an additional barrier against engine heat.

The insulator's unique design includes a spacer, which allows for a precise fit on the carburetor and ensures proper clearance between the insulator and other engine components. This not only improves the overall look of the engine but also ensures that the carburetor functions optimally, providing reliable and consistent fuel delivery to the engine.

The Dashman RPK.250 is a popular choice among performance enthusiasts and racers, as it helps to reduce intake manifold heat and improve engine cooling efficiency. By insulating the carburetor, the insulator helps to maintain a consistent air temperature entering the engine, which can lead to better power output and improved fuel economy.

Installation of the Dashman RPK.250 is straightforward and can be completed in a short amount of time. It is recommended to use a high-temperature RTV silicone sealant to ensure a secure fit and prevent any potential leaks. The insulator is also designed to be easily removable, allowing for easy access to the carburetor for maintenance or tuning purposes.

In summary, the Dashman RPK.250 is a high-quality, phenolic riser insulator designed for use with the Rochester 2GC and 2GV big carburetors and the GM GTO. Its thick, quarter-inch design provides excellent insulation properties, while the spacer ensures a precise fit and proper clearance. The insulator is a popular choice among performance enthusiasts and racers, as it helps to reduce intake manifold heat, improve engine cooling efficiency, and maintain consistent air temperature for optimal engine performance.

The Dashman RPK.250 for Rochester 2GC/2GV big carburetor phenolic riser insulator and GM GTO spacer 1/4 is a product designed to help improve the performance and efficiency of carbureted engines, specifically those using Rochester 2GC and 2GV carburetors. Here are some potential pros and cons of purchasing this part.

Pros:

1. Improved engine performance: The insulator and spacer are designed to help reduce heat transfer between the carburetor and the intake manifold, which can result in improved engine performance.

2. Better fuel economy: By reducing heat transfer, the engine can operate more efficiently, which can lead to better fuel economy.

3. Easy installation: The insulator and spacer are designed to be a direct replacement for the stock parts, making installation relatively simple and straightforward.

4. Durable: Phenolic material is known for its durability and resistance to heat, making it an ideal material for this application.

Cons:

1. Cost: The Dashman RPK.250 may be more expensive than the stock insulator and spacer, which could be a deterrent for some buyers.

2. Not applicable to all engines: This product is specifically designed for use with Rochester 2GC and 2GV carburetors, so it may not be applicable to all engines.

3. Potential for increased complexity: While the installation is relatively simple, adding another part to the engine can increase complexity and potentially introduce new points of failure.

Conclusion:

The Dashman RPK.250 for Rochester 2GC and 2GV carburetors can help improve engine performance, fuel economy, and durability. However, it may come at a higher cost than the stock parts and may not be applicable to all engines. Ultimately, the decision to purchase this product depends on the individual's specific needs and budget.

Recommendation:

If you are looking to improve the performance and efficiency of your Rochester 2GC or 2GV carbureted engine and have the budget for it, the Dashman RPK.250 could be a worthwhile investment. However, if you are on a tight budget or unsure if this product will provide significant benefits for your specific application, it may be worth considering other options or waiting to see if the cost comes down in the future.

Details:

Add a little performance to your machine the cheap way, and keep heat away from carburetor solve soak or boiling issues. Free sticker included. Do it right the first time. This 1/4 thick phenolic riser kit for the big Rochester 500 cfm carb and will fit other model's as well.

part #: rpk250 price

  • $36.00

specifications carbcoon:

  • for models: Gto, 250
  • for makes: Rochester
  • brand: Dashman
  • mpn: Rpk.250
  • items included: Gasket, Mounting Hardware
  • country of manufacture: United States
  • material: Phenolic
  • vintage part: Yes
  • placement on vehicle: Front
  • choke type: Both
  • type: Carburetor
  • features: Down Draft
  • universal fitment: No

payments carbcoon:

  • credit card: Diners-club
  • other
  • wallet: Google-pay

returns carbcoon:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller

offer carbcoon:

  • started: November 9, 2025
  • sold: 0
  • availability: In Stock
  • quantity: 3
  • options: Ship-to-home

shipping carbcoon:

  • carrier: USPS
  • cost: $8.00
  • service: USPS First Class, USPS Priority Mail Small Flat Rate Box, USPS Priority Mail Express
  • type: Calculated
  • class: Standard, Expedited
  • transit: 5-9 Days

seller carbcoon:

  • rating: 99.4%
  • city: Viroqua, Wisconsin
  • # reviews: 16474

general carbcoon:

  • Car Truck Parts Accessories > Air Fuel Delivery > Carburetors
  • condition: New
for models: gto, 250, for makes: rochester, items included: gasket, mounting hardware, country of manufacture: united states, vintage part: yes, placement on vehicle: front, choke type: both, type: carburetor, features: down draft, universal fitment: no,
category: auto parts > car truck parts accessories > air fuel delivery > carburetors, material: phenolic, sku: 8858521982564762,

Dashman RPK.250 Is Similar To:

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1 offer $36.00 USD
  • Offer #1: $36.00 price + $8.30 shipping estimate = $44.30* total. Add a little performance to your machine the cheap way, and keep the heat away from the carburetor to solve the heat soak or carburetor boiling issues. This 1/4" thick phenolic riser kit for the big Rochester 500 CFM carb and will fit other models as well.+$8.30 shipping

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