







⚡ Ignite your drive with precision and power!
The Autolite APP3923-4PK Double Platinum Spark Plug pack features advanced full platinum tips and a necked-down center electrode for quicker, cleaner ignition. Designed with a high nickel alloy side electrode and a full copper core, these plugs optimize engine performance, enhance fuel economy, and ensure durable, reliable starts across all driving conditions.





| Brand | Autolite Iridium Ultra | 
| Core Material | Platinum | 
| Thread Size | 5/8 inches | 
| Top Material Type | Nickel | 
| Vehicle Service Type | Car | 
| Global Trade Identification Number | 00009100002358 | 
| UPC | 009100002358 | 
| Manufacturer | FRAM | 
| Model | APP3923-4PK | 
| Product Dimensions | 8.59 x 10.16 x 2.54 cm; 199.58 g | 
| Item model number | APP3923-4PK | 
| Manufacturer Part Number | APP3923-4PK | 
| Position | Center | 
| Assembly Required | No | 
| Manufacturer | FRAM | 
| Country of Origin | USA | 
| Item Weight | 200 g | 
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