GM 556302 Nos Cylinder Exahaust Manifold Heat Riser Valve 1949-88-98

( Brand: Gm ), ( Part Type: Heat Valve Cylinder Manifold ), ( Ipn: 1949 88 98 ), ( Manufacturer Part Number: 556302 ), ( Vintage Part: Yes )

Review GM Nos Oldsmobile Cylinder Exahaust Manifold Heat Riser Valve fits 1949-53

The GM 556302 NOS (New Old Stock) Cylinder Exhaust Manifold Heat Riser Valve is a vital component for Oldsmobile engines manufactured between 1949 and 1953. This valve is designed to regulate the flow of coolant to the exhaust manifolds, allowing them to warm up more efficiently and evenly. As a result, this leads to improved engine performance and overall durability.

The heat riser valve is a hydraulic unit, meaning it operates using engine coolant pressure. The valve body is made from cast iron, which provides excellent heat conductivity and resistance to corrosion. The valve spool is made from brass, ensuring a tight seal and smooth operation. The valve is operated using a vacuum-actuated diaphragm, which is located on the intake manifold.

The GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve comes fully rebuilt and tested, ensuring that it functions at its optimal level. The valve has been inspected for any signs of wear, leaks, or damage, and any necessary repairs have been made. The valve also comes with a new gasket to ensure a proper seal between the valve and the manifold.

Installing the GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve is a relatively straightforward process. The valve is located on the passenger side of the engine, near the exhaust manifolds. To install, simply remove the old valve, clean the area, and install the new one using the provided gasket and hardware.

In summary, the GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve is an essential component for Oldsmobile engines manufactured between 1949 and 1953. This fully rebuilt and tested valve is made from high-quality materials, ensuring optimal performance and durability. The installation process is straightforward, making this an excellent choice for anyone looking to restore their vintage Oldsmobile to its former glory.

Pros and Cons of Buying a GM 556302 NOS (New Old Stock) Cylinder Exhaust Manifold Heat Riser Valve for 1949-53 Oldsmobile

The GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve is a critical part for Oldsmobile models produced between 1949 and 1953. This component is essential for maintaining proper engine temperature and efficiency. In this analysis, we will explore the advantages and disadvantages of purchasing this part new from old stock.

1. Authenticity: NOS parts are original and have not been previously used or reconditioned. This ensures that the purchaser receives a genuine, high-quality component that meets the original specifications.

2. Reliability: NOS parts are often in better condition than used or rebuilt parts since they have not been exposed to the wear and tear of regular use. This can result in a more dependable and longer-lasting repair.

3. Availability: NOS parts are often harder to find compared to new or used aftermarket parts. However, purchasing a NOS part guarantees that the part is available, eliminating the uncertainty and potential waiting times associated with sourcing a hard-to-find component.

4. Value retention: Since NOS parts are original and in excellent condition, they can potentially hold their value better than used or rebuilt parts. This is essential for collectors and enthusiasts who may want to sell their components in the future.

1. Cost: NOS parts are generally more expensive than used or aftermarket parts due to their scarcity and originality. This can be a significant barrier for some buyers, especially those on a tight budget.

2. Limited availability: NOS parts are not always readily available for every make and model, and their availability can be limited to specific suppliers or distributors. This can make the search for the correct NOS part time-consuming and challenging.

3. Shipping and handling: Due to their size and weight, NOS parts can be more expensive to ship and handle compared to smaller components. This extra cost should be factored into the overall purchase price.

In conclusion, purchasing a GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve for a 1949-53 Oldsmobile comes with both advantages and disadvantages. The benefits include authenticity, reliability, availability, and potential value retention. However, the disadvantages include the higher cost, limited availability, and potential shipping and handling expenses.

Ultimately, the decision to purchase a NOS part depends on the individual's priorities, budget, and the importance of having an original component for their Oldsmobile restoration project. For those who value the authenticity and reliability of a genuine NOS part, the extra cost and potential challenges may be worth it. For others, considering a high-quality used or aftermarket part may be a more cost-effective option.

If you are committed to maintaining the originality of your 1949-53 Oldsmobile and have the budget for it, purchasing a GM 556302 NOS Cylinder Exhaust Manifold Heat Riser Valve is an excellent choice. However, if cost is a concern, consider exploring the availability of high-quality used or aftermarket parts as viable alternatives. Always ensure that the part you choose meets the original specifications to ensure proper engine function and efficiency.

part # 556302 price

• $170.99

specifications maniheader:

• for makes: Oldsmobile
• for years: 1949-53
• brand: Gm
• part type: Heat Valve Cylinder Manifold
• interchange part number: 1949 88 98
• manufacturer part number: 556302
• vintage part: Yes

offer maniheader:

• quantity: 1
• started: November 18, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping maniheader:

• type: Fixed
• transit: 4-11 Days
• class: Standard
• service: USPS First Class
• cost: $0.00
• carrier: USPS

general maniheader:

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

payments maniheader:

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

seller maniheader:

• # reviews: 12196
• rating: 99.9%

returns maniheader:

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

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