First, Add Your Vehicle
Get an exact fit for your vehicle.
Tap image to zoom
Bosch Double Iridium Spark Plug 9659Shop All Bosch
Part # 9659
SKU # 417845
Price Not Available
Iridium - Double
Ground Electrode Quantity
Bosch OE Fine Wire Double Iridium. All iridium plugs are NOT created equal. Give your customers the only one engineered for both high performance and long life. The ultra fine wire design and laser welded, tapered ground electrode deliver the ultimate in ignitability and high performance. The iridium-alloy center electrode firing pin and laser welded ground electrode with iridium alloy inlay help it to go the distance.
- Double Iridium electrodes – iridium firing pin and iridium ground electrode inlay offer higher performance and 4 times longer life compared to standard copper spark plugs
- OE Fine Wire design requires up to 24% less voltage to ignite
- 360 degree continuous laser welding increases durability for increased life
- Copper core provides broader heat range to resist pre-ignition and fouling
- Pre-gapped and nickel plated threads allow for quick installation without adjusting the gap or applying anti-seize
- Tapered ground electrode allows for better ignition throughout the life of the spark plug
- 7 year customer satisfaction guarantee (visit www.boschautoparts.com/sparkplugs for details)
- 1 year Technician Warranty (visit www.boschautoparts.com/sparkplugs for details)
Advice and How-To's
- Why Oil Is on Your Spark Plugs
- Spring car care checklist
- How to Clean a Spark Plug
- How Often Do Spark Plugs Need to Be Replaced?
- Copper vs Iridium Spark Plugs: What’s the Difference?
- Iridium vs Platinum Spark Plugs: What’s the Difference?
- How to Test a Spark Plug
- How much does it cost to replace spark plugs?
- Spark Plugs vs Glow Plugs: What’s the difference?
- How Much Should a Tune-Up Cost?