The 5285 features a tapered cut (U-groove) in the ground electrode. This design allows the flame kernel to grow more rapidly and reduces the quenching effect, which in turn minimizes carbon fouling in stop-and-go traffic.
For fiscal year 2023 (ending March 2024), DENSO reported consolidated revenues of ¥7.2 trillion (~$48 billion), a historic high driven by the post-COVID supply chain recovery and a weak yen. Yet, the operating profit margin remains stubbornly thin at roughly 5-6%, compared to global peers like Bosch (estimated 8%) or APTIV (12%+). denso 5285
Common engine families that use this plug type include various small-block V8 engines from General Motors and Ford, as well as many import 4-cylinder and 6-cylinder engines from the 1980s through early 2000s. However, specific vehicle fitment information for this universal part number is not provided by the manufacturer, making it essential to verify compatibility with your particular vehicle. The 5285 features a tapered cut (U-groove) in
| Specification | Value | |---|---| | | Copper | | Center Electrode Tip Material | Nickel | | Ground Electrode Core Material | Nickel | | Ground Electrode Quantity | 1 | | Hex Size | 5/8" (16mm) | | Reach | 0.561" (14mm) | | Thread Diameter | 14mm | | Pre-Gap Size | 0.044" (1.1mm) | | Resistance | 5000 ohms | | Resistor Type | Yes | | Seat Type | Tapered | | Insulator Material | High alumina ceramic | | Manufacturer Heat Range | 8 | | Center Electrode Projection | Long projection | | Electrical Terminal Type | Stud (non-removable nut) | | Washer Included | No | Yet, the operating profit margin remains stubbornly thin
The Autolite 5285 is a conventional copper-core spark plug designed for reliable performance in a wide range of engines. Its specifications are as follows:
Diamond-Like Carbon (DLC) coating is applied to internal moving needles to protect against fuel friction and abrasive fuel particulates. The Cabin Component: DENSO 5285 HVAC Blower Motor
: A single platinum puck is welded to the center electrode. This reduces wear and extends service life to approximately 60,000 miles. Platinum plugs provide modest improvements in ignitability and fuel efficiency.