Brand: Bosch · SKU: Y5DDC · MPN: Y5DDC · Category: Components
The Bosch Y5DDC Spark Plug is engineered to meet the highest standards of performance and reliability, ensuring optimal engine performance by efficiently igniting the air-fuel mixture. It features a heavy-duty yttrium-enhanced center electrode with a copper core for superior reliability and durability, potentially lasting up to 50% longer than standard nickel plugs. Nickel-plated rolled threads provide anti-seize and corrosion protection. It has a metal glass fused resistor for maximum interference suppression and an angular, 5-rib insulator design to prevent flashover. It is described as OE-level quality and a factory-correct replacement for certain vehicles, including the Porsche 911 (2004-2011). This product has been discontinued by some retailers.
| Resistor | No (some sources say Yes, but primary specs lean towards No/Metal Glass Fused) |
|---|---|
| Seat Type | Gasket / Flat |
| Thread Size | M 12 x 1.25 |
| Spanner Size | 16 mm (5/8") |
| Thread Pitch | 1.25mm |
| Electrode Gap | 0.8 mm (0.031") |
| Terminal Type | Solid |
| Spark Position | 3 mm |
| Thread Diameter | 12mm |
| Tightening Torque | 23 Nm (Cast Iron: 11-18 lb. ft. Aluminum: 11-15 lb. ft.) |
| Insulator Material | Ceramic |
| Manufacturer Part # | Y5DDC |
| Thread Length (Reach) | 19 mm (0.748 in) |
| Manufacturer Heat Range | 5 |
| Ground Electrode Quantity | 2 (Multiple) |
| Center Electrode Tip Material | Nickel-Chromium |
| Ground Electrode Tip Material | Nickel-Chromium |
| Center Electrode Core Material | Nickel-Chromium and Copper |
| Warranty | Satisfaction Guarantee |
| Weight | 0.0904 lbs |
| Dimensions | 0.9449 x 1.063 x 3.5039 in |
The Bosch Y5DDC is a multi-ground spark plug designed for optimal ignition performance and durability, often used in European vehicles. Its copper core and yttrium-enhanced electrode contribute to a longer service life compared to standard copper plugs. It features anti-seize plating and protection against flashover.
Yes, this Bosch Y5DDC Spark Plug (Y5DDC) is 100% genuine Bosch hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Bosch Y5DDC Spark Plug includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the Y5DDC.