Autolite APP5426 Spark Plug

Autolite Double Platinum Spark Plug APP5426

Autolite Double Platinum Spark Plug APP5426 is built for OE-style ignition performance with platinum-to-platinum firing for longer service life and consistent spark delivery. It is a direct-fit spark plug option for select Jeep Wrangler, Chrysler Town & Country, Dodge Grand Caravan, Volkswagen Routan, Chrysler Pacifica, Dodge Caravan, and Chrysler Voyager applications.

Key Features

• Double platinum design for platinum-to-platinum firing
• Pre-gapped to 0.050 in. / 1.30 mm
• 14 mm thread diameter with 5/8 in. hex size
• 0.982 in. reach and tapered seat type
• Resistor spark plug with 4,000 ohm resistance
• Platinum center electrode tip and platinum ground electrode tip
• Ceramic extra-long insulator for OE-style fit and function

Product Details

The Autolite Double Platinum Spark Plug line focuses on OE replacement fitment and stable ignition performance across foreign and domestic vehicles. APP5426 uses a platinum center electrode and platinum ground electrode to support durable spark delivery, while the tapered ground electrode design and standard center electrode layout match common OE-style requirements. This spark plug is a practical choice for drivers servicing ignition systems on Jeep Wrangler and Chrysler Town & Country models, as well as other listed Chrysler, Dodge, and Volkswagen applications.

This part cross-references Champion Spark Plug 7440 for the same application.

What It Helps Address

• Hard starting caused by worn spark plugs
• Slow throttle response during acceleration
• Reduced fuel economy from weak ignition performance
• Misfire symptoms related to plug wear or gap drift
• Uneven idle from aging secondary ignition components

Installation Notes

Verify the vehicle’s OE-style spark plug specification before installation, including the required gap and seat type. APP5426 is pre-gapped at 0.050 in. / 1.30 mm, but final gap verification is still recommended during service. Use the correct 5/8 in. hex spark plug socket and follow the manufacturer’s torque specification for the engine.

Fits 2007-2011 Jeep Wrangler, N/A. Fits 2001-2010 Chrysler Town & Country, N/A. Fits 2001-2010 Dodge Grand Caravan, N/A. Fits 2009-2010 Volkswagen Routan, N/A. Fits 2008 Chrysler Pacifica, N/A. Fits 2005-2007 Chrysler Pacifica, N/A. Fits 2001-2007 Dodge Caravan, N/A. Fits 2001-2003 Chrysler Voyager, N/A.

Quality Assurance

Autolite supplies ignition products to the automotive aftermarket and original equipment manufacturers, and this spark plug is engineered to deliver OE form, fit, and function for listed applications.