Description
The Autolite APP5245 is a double platinum spark plug built for longer life and reliable performance, especially in DIS (distributorless ignition system) applications. Its platinum-to-platinum design helps reduce gap erosion and misfires compared with standard copper or single-platinum plugs.
Key Features
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Double platinum design for longer service life
- Helps reduce gap erosion
- Helps reduce misfires
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High alumina ceramic insulator for thermal conductivity and dielectric strength
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Multi-rib insulator helps prevent flashover
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Yttrium-enhanced ground electrode for durability under high heat and pressure
- 5-year limited warranty
Specifications
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Part Number: APP5245
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Brand: Autolite
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Plug Type: Double Platinum
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Resistance: 4000 ohms
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Resistor Type: Yes
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Thread Size: M14 - 1.25
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Thread Diameter: 14 mm
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Seat Type: Tapered
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Reach: 0.679 in / 17 mm
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Hex Size: 5/8 in
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Terminal Type: Non-removable nut
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Center Electrode Core Material: Copper
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Center Electrode Tip Material: Platinum
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Ground Electrode Core Material: Nickel
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Ground Electrode Tip Material: Platinum
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Ground Electrode Quantity: 1
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Insulator Material: Ceramic
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Center Electrode Projection: Long projection
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Center Electrode Insulator Tip Projection: 0.19 in / 4.8 mm
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Grade Type: Performance
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Manufacturer Heat Range: 10
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Washer Included: No
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Skirt: Yes
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Indexed: No
Fitment Overview
This plug fits a wide range of GM, Cadillac, Buick, Chevrolet, GMC, Hummer, Pontiac, Oldsmobile, Saab, Isuzu, and Workhorse applications, especially:
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GM V8 trucks and SUVs with 4.8L, 5.3L, 6.0L, 6.2L, and 8.1L engines
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LS-based performance cars like:
- Chevrolet Corvette
- Chevrolet Camaro
- Pontiac Firebird
- Pontiac GTO
- Cadillac CTS
- Various older GM passenger cars with:
- 2.0L / 2.2L I4
- 2.8L / 3.1L V6
Best Use Case
This is a strong choice for:
- Vehicles that originally specify double platinum plugs
- GM DIS ignition systems
- Drivers wanting better longevity than copper plugs
- Daily-driven V8 trucks, SUVs, vans, and performance cars needing OE-style replacement
Summary
The Autolite APP5245 is a performance-grade double platinum spark plug designed for durability, reduced erosion, and longer service life. It is especially well suited to many GM truck, SUV, van, and V8 performance applications, plus a number of older GM 4-cylinder and V6 models.
