NGK 48937 Ignition Coil

Reliable Ignition Performance for Chrysler, Dodge, Jeep, and Ram Vehicles

The NGK COP (Waste Spark) Ignition Coil 48937 is designed to deliver consistent ignition voltage for distributorless ignition systems. Engineered for select Chrysler, Dodge, Jeep, and Ram models, this ignition coil ensures efficient spark delivery to maintain engine performance.

• 12-volt ignition coil compatible with distributorless ignition systems
• Cop (waste spark) coil type for paired cylinder firing
• Blade terminal type with two terminals for secure electrical connection
• Female connector and male terminal gender for proper fitment
• Non-oil filled design for reliable operation without maintenance
• Compatible with Chrysler, Dodge, Jeep, and Ram models including Ram 1500, Grand Cherokee, Durango, Dakota, Aspen, and Commander
• Part number U4042 and stock number 48937 for accurate identification

About the NGK COP (Waste Spark) Ignition Coil Line

The NGK COP (Waste Spark) Ignition Coil product line is specifically designed for distributorless ignition systems that use a paired cylinder firing method. This coil type supports waste spark ignition, where one coil fires two spark plugs simultaneously, improving ignition efficiency and simplifying the ignition system. The NGK COP ignition coils are engineered to meet OEM specifications for voltage and terminal configuration, ensuring compatibility and reliable performance in applicable Chrysler, Dodge, Jeep, and Ram vehicles.

Product Details and Specifications

This ignition coil operates at 12 volts and is designed for distributorless ignition systems, which eliminates the need for a traditional distributor. The coil type is COP (waste spark), meaning it fires two spark plugs at once, one on the compression stroke and one on the exhaust stroke, which is common in many modern engines. It features a blade terminal type with two terminals, a female connector, and male terminal gender to ensure proper electrical connections. The coil is not oil filled, reducing maintenance concerns and potential leaks. This part is identified by part number U4042 and stock number 48937.

Common Applications and Issues Addressed

• Replacement for faulty or worn ignition coils in compatible Chrysler, Dodge, Jeep, and Ram models
• Resolves engine misfires caused by weak or inconsistent spark delivery
• Improves engine starting reliability and smooth idling
• Addresses rough engine performance related to ignition coil failure
• Prevents potential damage to ignition system components due to coil malfunction

Installation Notes and Tips

When installing the NGK COP (Waste Spark) Ignition Coil 48937, ensure the vehicle ignition is off and the battery is disconnected to prevent electrical shock. Verify the coil’s blade terminals and connector gender match the vehicle’s wiring harness. No mounting bracket is included, so use the existing bracket or mounting points on the vehicle. Properly seat the coil to avoid vibration and ensure secure electrical connections. Consult the vehicle’s service manual for torque specifications and detailed installation procedures.

Quality Assurance and Warranty

NGK ignition coils are manufactured to meet strict quality standards and OEM specifications. The NGK COP (Waste Spark) Ignition Coil 48937 undergoes rigorous testing to ensure durability and consistent performance. While specific warranty details are not provided here, NGK products typically come with a limited warranty covering defects in materials and workmanship. Refer to NGK’s official warranty policy for complete information.