SYLPHON 14480D Packard Thermostat

( Brand: Sylphon ), ( Manufacturer Part Number: 14480D ), ( Mounting Style: Bolt-on ), ( Material: Brass ), ( Vintage Part: Yes ), ( California Prop 65 Warning: Unk ), ( Type: Thermostat ), ( Ipn: 1939 14480d ), ( Universal Fitment: No ), ( Country Of Origin: United States )

Review SYLPHON Packard Thermostat Cadillac fits 1939

The Sylphon 14480D 1939 Packard thermostat is a vital component of the cooling system in certain classic Cadillac models, including those with Packard engines. This thermostat, specifically designed for vehicles manufactured between 1939 and 1941, ensures efficient engine temperature regulation.

Crafted from high-quality materials, this thermostat housing is made of brass, providing durability and resistance to corrosion. The housing is designed with a classic thread pattern to ensure a secure fit in the engine bay of your Cadillac. The thermostat itself is a stainless steel, bimetallic design. Bimetallic thermostats function by using two different metals that expand at different temperatures. As the coolant temperature rises, the thermostat opens, allowing coolant to flow through the engine to regulate its temperature.

This Sylphon 14480D thermostat is a direct replacement for the original part in your classic Cadillac. It comes complete with a new gasket, ensuring a proper seal and preventing coolant leaks. The gasket is made of a high-temperature material to ensure longevity and prevent warping or melting.

Installing this thermostat is a straightforward process. Simply follow the steps outlined in your vehicle's service manual. The thermostat is located near the front of the engine, and the cooling system should be drained and the new thermostat installed in its place. Once the new thermostat is installed, the cooling system can be refilled with the appropriate coolant.

By using a high-quality, replacement thermostat like the Sylphon 14480D, you can ensure your classic Cadillac's engine stays at the optimal operating temperature, providing reliable performance and extending the life of the engine. This thermostat is a must-have for Cadillac enthusiasts and restorers looking to keep their vintage vehicles running at their best.

Pros and Cons of Buying a Sylphon 14480D 1939 Packard Thermostat for Cadillac

The Sylphon 14480D 1939 Packard thermostat is a popular choice among classic Cadillac owners for its authenticity and functionality. However, like any automotive part, it comes with its advantages and disadvantages. Here's a detailed analysis:

1. Authenticity: This thermostat is specifically designed to fit and function in classic Cadillac models, ensuring a perfect fit and maintaining the originality of your vehicle.

2. Durability: The Sylphon 14480D 14480D thermostat is known for its high-quality build and long-lasting performance, making it a reliable investment for classic car enthusiasts.

3. Proper Temperature Control: This thermostat ensures proper engine temperature control, preventing overheating and ensuring optimal performance.

4. Easy Installation: Although a thermostat replacement might seem daunting, the Sylphon 14480D 1939 Packard thermostat is relatively easy to install, with clear instructions provided.

1. Cost: Compared to modern aftermarket or OEM thermostats, the Sylphon 14480D 1939 Packard thermostat can be more expensive.

2. Availability: Due to its specific application to classic Cadillac models, the Sylphon 14480D 1939 Packard thermostat might not be readily available at local auto parts stores and may require ordering online.

3. Limited Adaptability: This thermostat is designed exclusively for classic Cadillac models and cannot be used in modern vehicles.

The Sylphon 14480D 1939 Packard thermostat is an excellent investment for classic Cadillac owners seeking authenticity, durability, and proper temperature control. Despite its higher cost and limited adaptability, the benefits often outweigh the drawbacks, making it a recommended choice for those looking to maintain or restore their classic Cadillac.

Details:

Part will need service, RR30 I put it in boiling water and does not work. This is a used 1939 Packard Sylphon Thermostat 14480D.

part #: 14480d price

• $600.00

specifications theostapa:

• for makes: Cadillac
• brand: Sylphon
• mpn: 14480d
• mounting style: Bolt-on
• material: Brass
• vintage part: Yes
• california prop 65 warning: Unk
• type: Thermostat
• ipn: 1939 14480d
• universal fitment: No
• country of origin: United States

general theostapa:

• Car Truck Parts Accessories > Engine Cooling Components > Thermostats Housings
• condition: For parts or not working

seller theostapa:

• # reviews: 15265
• rating: 99.7%
• city: Huntington Station, New York

returns theostapa:

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

offer theostapa:

• options: Ship-to-home
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock
• started: January 28, 2026

payments theostapa:

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

shipping theostapa:

• carrier: USPS
• cost: $8.97
• class: Standard
• type: Calculated
• transit: 3-7 Days
• service: USPS First Class

Sylphon 14480D Is Similar To:

• Robertshaw 1433442 Fulton Sylphon 14334422 Thermostat 348 V8 Cadillac (53.4% similar) While this unit shows age and surface wear, its a desirable original component for those restoring classic cadillac engines to factory specs. These Fulton Sylphon-style thermostats were known for their durability and distinctive bellows-style design. This part is used, has not been tested, and ...(October 16th, 2025)