fits make: Mopar.

( Manufacturer Part Number: 491936 ), ( Part Type: Spark Plug ), ( Surface Finish: Original ), ( Country/region Of Manufacture: United States )
The P35x-OJ13Y Mopar NOS Spark Plug is a high-performance replacement for your original spark plug. This spark plug, specifically model number 4091936 or 491936 OJ13Y, is designed to deliver exceptional ignition performance for your Mopar engine.
The P35x-OJ13Y spark plug features a copper center electrode and a nickel alloy ground electrode, which are designed to provide superior heat transfer and prolonged spark plug life. The copper center electrode is known for its excellent conductivity, ensuring a strong and consistent spark, while the nickel alloy ground electrode is resistant to corrosion, ensuring long-term durability.
This spark plug is also NGK OEM replacement, meaning it's designed to fit and function just like the original spark plug in your Mopar engine. It comes with a heat range of 8, which is suitable for most gasoline engines, providing a good balance between ignition performance and durability.
The P35x-OJ13Y Mopar NOS Spark Plug is also designed with a tapered electrode, which helps to reduce misfires and improve engine performance. The tapered electrode also helps to prevent fouling, ensuring consistent ignition even under heavy load conditions.
Overall, the P35x-OJ13Y Mopar NOS Spark Plug is a high-quality replacement for your original spark plug. Its copper center electrode and nickel alloy ground electrode provide superior heat transfer and durability, while its tapered electrode helps to reduce misfires and improve engine performance. With a heat range of 8, it's suitable for most gasoline engines, making it a reliable and effective choice for your Mopar engine.
Pros of buying a Mopar NOS Spark Plug (P35X-OJ13Y, 4091936 49136 OJ13Y):1. High-performance: These spark plugs are designed for high-performance engines and are ideal for racing applications.
2. Heat range: The NOS spark plugs have a high heat range, which helps prevent pre-ignition and ensures proper ignition at high engine temperatures.
3. Durability: These spark plugs are made with high-quality materials and are designed to withstand the rigors of high-performance racing.
4. Easy installation: The spark plugs come with a standard thread size, making installation easy and straightforward.
Cons of buying a Mopar NOS Spark Plug (P35X-OJ13Y, 4091936 49136 OJ13Y):1. Cost: NOS spark plugs are typically more expensive than standard spark plugs.
2. Limited availability: NOS spark plugs may not be available at all auto parts stores, and you may need to order them online or from a specialized performance parts retailer.
3. Not recommended for daily driving: NOS spark plugs are not recommended for daily driving due to their high heat range and performance-oriented design.
Conclusion:If you're looking for a high-performance spark plug for your racing application, the Mopar NOS Spark Plug (P35X-OJ13Y, 4091936 49136 OJ13Y) is a great option. However, if you're looking for a standard spark plug for daily driving, you may want to consider a less expensive option.
Recommendation:If you're a serious racer looking for a high-performance spark plug, the Mopar NOS Spark Plug (P35X-OJ13Y, 4091936 49136 OJ13Y) is a worthy investment. If you're looking for a more affordable option for daily driving, I recommend checking out the standard spark plug options from reputable manufacturers like NGK or DENSO.
In and 1978 Plymouth 400 cu. Per Mopar cataloging these plugs fit 1978 Chrysler 400 and 440 cu. You are buying a box of 8 genuine Mopar spark plugs including champion plug gauge.
In engines,1978 dodge 400 cu.