fits make: Chrysler, Desoto, Mopar. year: 1937–1940.

( Brand: Mopar ), ( Manufacturer Part Number: 667475 ), ( Part Type: Cylinder Piston )
Introducing the 667475 Chrysler DeSoto Cylinder Piston Set, a high-quality replacement part for your classic 1937, 1938, 1939, or 1940 DeSoto engine. This set includes all the necessary pistons needed to ensure your engine runs smoothly and efficiently.
Each piston in this set is precision-crafted from top-grade materials, ensuring durability and reliability. The pistons are designed to perfectly fit into your DeSoto's engine cylinders, ensuring a snug fit and reducing the risk of engine misfires or performance issues. The piston rings included in the set are also of superior quality, sealing effectively to prevent oil and gas leaks.
The pistons feature a polished finish, which not only looks great but also helps to reduce friction and improve engine performance. The piston skirts are also designed with a flat top to ensure proper compression, while the piston crowns are domed to provide optimal combustion efficiency.
The 66755 Chrysler DeSoto Cylinder Piston Set is backed by a warranty, giving you peace of mind in knowing that you're investing in a reliable and long-lasting product. Whether you're restoring a classic DeSoto or simply maintaining your vehicle, this piston set is an essential part of keeping your engine running at its best.
In summary, the 667475 Chrysler DeSoto Cylinder Piston Set is a high-quality replacement part that is precision-crafted from top-grade materials and designed to perfectly fit into your DeSoto's engine cylinders. Its polished finish, flat top piston skirts, and domed piston crowns ensure optimal engine performance, while its warranty provides peace of mind in knowing that you're investing in a reliable and long-lasting product.
Pros of buying a 667475 Mopar piston set for a 1937-1940 Chrysler DeSoto:1. High-quality materials: Mopar pistons are known for their use of high-quality materials, such as forged alloy steel and nitrided cylinder walls, which can provide better performance and durability compared to OEM or aftermarket alternatives.
2. Compatibility: This piston set is specifically designed for 1937-1940 Chrysler DeSoto engines, ensuring a perfect fit and eliminating the need for any modifications.
3. Improved engine performance: By replacing worn-out or damaged pistons with new ones, you can potentially improve your engine's power, efficiency, and overall performance.
4. Warranty: Mopar offers a limited warranty on their piston sets, providing peace of mind and protection against any manufacturing defects.
Cons of buying a 667475 Mopar piston set for a 1937-1940 Chrysler DeSoto:1. Cost: High-quality piston sets like these can be expensive, potentially exceeding the budget of some car owners.
2. Installation complexity: Replacing pistons requires disassembling the engine, which can be a complicated and time-consuming process, especially for those without mechanical experience.
3. Risk of engine damage: If not installed correctly, replacing pistons can potentially lead to engine damage, such as cylinder wall scoring or oil ring damage.
Conclusion:If you're looking to improve your 1937-1940 Chrysler DeSoto's engine performance and are willing to invest in high-quality parts, a Mopar piston set like the 667475 could be a worthwhile investment. However, it's important to consider the potential costs, installation complexity, and risk of engine damage before making a decision. If you're not comfortable with the installation process or don't have the necessary budget, it might be better to consider alternative options, such as buying a rebuilt engine or having a professional mechanic perform the work.
I see no oversize markings on them. Part number on the box is original Mopar piston set. They are cast aluminum.
The pistons also have this number on them along with cpd logo. They are discolored as shown in the photos but still good usable condition. Should be for the larger Chrysler and Desoto Flathead six engines.
The pistons are for 3 and 8 bore.