Autolite APP985 Spark Plug

Autolite Double Platinum Spark Plug APP985

Autolite Double Platinum Spark Plug APP985 is a premium ignition component built for stable firing, easier starts, quicker throttle response, and improved fuel efficiency. Its platinum-to-platinum firing design supports longer service life, making it a practical OE-style replacement for a wide range of Chrysler, Dodge, Jeep, Plymouth, and Chevrolet applications.

Key Features

• Double platinum firing design for consistent spark performance
• Platinum center electrode and platinum ground electrode tip
• 0.034 in. pre-gap size for specified applications
• 14 mm thread diameter with 0.750 in. reach
• 5/8 in. hex size and flat seat design
• Resistor spark plug with ceramic extra-long insulator
• Nickel ground electrode core with tapered tip design

Product Details

The Autolite Double Platinum Spark Plug line is engineered as an OE-form, fit, and function replacement for many domestic and foreign vehicles. APP985 uses platinum on both firing surfaces to help maintain spark quality over time, while the resistor design supports ignition system stability. This part cross-references Champion Spark Plug 412 for the same application. Common search terms for this part include Autolite APP985 spark plug, Double Platinum spark plug for Jeep Wrangler, and Dodge Ram 1500 platinum spark plug replacement.

Vehicle Fitment

• Fits 2004-2006 Dodge Ram 1500, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1992-2006 Dodge Viper, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1997-2006 Jeep TJ, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1997-2006 Jeep Wrangler, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1987-1995 Jeep Wrangler, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1993-2004 Jeep Grand Cherokee, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1996-2002 Dodge Dakota, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1978-2001 Jeep Cherokee, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1993-1997 Chrysler Concorde, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1993-1997 Chrysler Intrepid, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1994-1997 Chrysler LHS, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1993-1997 Dodge Intrepid, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1997 Plymouth Prowler, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1994-1996 Chrysler New Yorker, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1993 Chevrolet Camaro, N/A — Double Platinum Spark Plug
• Fits 1986-1992 Jeep Comanche, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1978-1987 Jeep J10, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1980-1987 Jeep Wagoneer, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1978-1986 Jeep CJ7, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1984-1986 Jeep Grand Wagoneer, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1981-1985 Jeep Scrambler, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug
• Fits 1978-1983 Jeep CJ5, N/A — Spark Plug Gap: 0.035 inch (0.9 mm); Double Platinum Spark Plug

Common Uses

• Hard starting caused by worn spark plugs
• Misfire complaints related to weak ignition output
• Rough idle from degraded plug performance
• Reduced throttle response during acceleration
• Fuel economy loss from inefficient combustion

Installation Notes

Verify the specified gap before installation and confirm the 14 mm thread diameter, 0.750 in. reach, and flat seat match the engine requirements. Use the vehicle service specification for torque and inspect ignition wires or coils during replacement. For fitment searches, this part is commonly selected for Jeep Wrangler, Jeep Cherokee, and Dodge Ram 1500 applications.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this Double Platinum line is built to OE-style form, fit, and function standards for the listed applications.