Autolite AP985 Spark Plug

Autolite Platinum Spark Plug AP985

Autolite Platinum Spark Plug AP985 is built for drivers who want OE-style ignition performance with platinum durability. It is a direct-fit spark plug option for a wide range of Chrysler, Dodge, Jeep, Plymouth, and Chevrolet applications, including Jeep Wrangler, Jeep Cherokee, and Dodge Ram 1500 models listed below.

Key Features

• Platinum center electrode tip and core material for improved wear resistance versus standard copper plugs
• 0.034 in. pre-gap size, with fitment notes calling for a 0.035 in. gap on listed vehicles
• Resistor-type plug with 4,000 ohm resistance for ignition system compatibility
• Flat seat design, 14 mm thread diameter, and 5/8 in. hex size
• Ceramic extra-long insulator for stable spark plug construction
• Nickel ground electrode with tapered tip design and single ground electrode

Product Details

The Autolite Platinum Spark Plug line is positioned as an OE-style replacement for foreign and domestic vehicles, with form, fit, and function intended to match original equipment requirements. AP985 uses a platinum center electrode and platinum tip to help maintain consistent firing characteristics over time, while the nickel ground electrode and resistor design support everyday street use. This part cross-references Champion Spark Plug 82 for the same application.

AP985 is a strong search match for owners looking for a platinum spark plug for 2004-2006 Dodge Ram 1500, 1997-2006 Jeep Wrangler, 1978-2001 Jeep Cherokee, and 1993-2004 Jeep Grand Cherokee applications. It also appears in fitment for Dodge Viper, Dodge Dakota, Jeep TJ, Chrysler Concorde, Chrysler Intrepid, Chrysler LHS, Plymouth Prowler, and select Chevrolet Camaro applications.

What It Helps Address

• Hard starting caused by worn or inconsistent spark plugs
• Slow throttle response and reduced acceleration from aged ignition components
• Misfire symptoms related to plug wear or incorrect gap
• Fuel economy loss tied to weak spark delivery
• Routine ignition maintenance on high-mileage Chrysler, Dodge, Jeep, Plymouth, and Chevrolet vehicles

Installation Notes

Verify the vehicle-specific gap before installation; listed applications note a 0.035 in. (0.9 mm) gap. Confirm thread diameter, reach, seat type, and terminal style against the original plug before ordering. AP985 is a fitment-based spark plug for the vehicles shown in the application data, including Jeep Wrangler, Jeep Cherokee, and Dodge Ram 1500 models.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this platinum spark plug follows OE-style form, fit, and function expectations for the listed applications.