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NGK
Laser Iridium High Ignitability Spark PlugNGK 7505 Spark Plug
| Brand | NGK 7505 |
|---|---|
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Projected Square Platinum Electrode - High Ignitability |
| Hex Size | 5/8 |
| Insulator Height | 50.50 |
| Manufacturer Heat Range | 6 |
| Part Number | SILFR6C11 |
| Pre-Gap Size | .044 |
| Reach | 26.5 |
| Resistance | 5000 |
| Seat Type | Flat |
| Stock Number | 7505 |
| Thread Diameter | 14.00 |
| Product line | Laser Iridium High Ignitability Spark Plug |
| Fits | Subaru · 25 vehicles |
Laser iridium design. Iridium tip and copper core promote reliable ignition performance.
High ignitability electrode. Projected square platinum ground electrode helps spark efficiency.
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Cross-references AMS Automotive 4506, AP Exhaust 7505 and DENSO Auto Parts 4704 for the same application. See all 8.
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NGK Laser Iridium Spark Plug for Subaru
NGK 7505 is a Laser Iridium High Ignitability spark plug built for Subaru applications that call for a 0.044" gap and OE-style high ignitability performance. It is a direct-fit ignition service part for select Subaru Legacy, Outback, and Tribeca models, including 2010-2018 Subaru Legacy and 2010-2018 Subaru Outback applications.
Key Features
- Laser Iridium center electrode tip for stable ignition performance
- Projected square platinum ground electrode design for high ignitability
- 0.044" pre-gap size for listed Subaru applications
- 5000 ohm resistor for ignition noise suppression
- Copper core center electrode for heat transfer
- Nickel ground electrode core material
- Flat seat design with 14.00 mm thread diameter and 5/8 hex
- NGK part number 7505, manufacturer part number SILFR6C11
Product Details
NGK 7505 is part of the Laser Iridium High Ignitability spark plug line, which focuses on OE-style ignition performance for vehicles that require a high ignitability plug design. The iridium center electrode and projected platinum ground electrode help maintain consistent spark delivery in Subaru engines specified for this plug type. This part cross-references DENSO Auto Parts 4704 for the same application.
Compatible With 2019 Subaru Legacy, N/A; 2019 Subaru Outback, N/A; 2010-2018 Subaru Legacy, N/A; 2010-2018 Subaru Outback, N/A; and 2010-2014 Subaru Tribeca, N/A. Use NGK 7505 when replacing the original high ignitability spark plug specified for these Subaru models.
What It Helps Address
- Rough idle caused by worn spark plug electrodes
- Hard starting from degraded ignition performance
- Misfire conditions related to incorrect plug gap or wear
- Reduced throttle response from inconsistent spark delivery
- Service replacement for Subaru engines requiring a 0.044" high ignitability plug
Installation Notes
Verify the vehicle’s engine specification and confirm the required gap before installation. This plug uses a flat seat, 14.00 mm thread diameter, 26.5 reach, and non-removable nut terminal. For listed Subaru Legacy, Outback, and Tribeca applications, follow the manufacturer service interval and torque specifications in the vehicle service manual.
Quality Assurance
NGK is a major OE spark plug supplier with long-standing North American manufacturing and distribution support. The brand’s OE-focused engineering and application coverage make NGK 7505 a direct replacement choice for Subaru ignition service where the original plug specification calls for high ignitability.
This part fits 25 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Subaru | Legacy | 3.6L | H6 | N/A | OE spark plug has high ignitability, for optimal performance replace with high ignitability spark plugs; gap is 0.044"; actual OE manufacturer; Laser Iridium High Ignitability Spark Plug |
| 2019 | Subaru | Outback | 3.6L | H6 | N/A | OE spark plug has high ignitability, for optimal performance replace with high ignitability spark plugs; gap is 0.044"; actual OE manufacturer; Laser Iridium High Ignitability Spark Plug |
| 2018 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2018 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2017 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2017 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2016 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2016 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2015 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2015 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2014 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2014 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2014 | Subaru | Tribeca | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2013 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2013 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2013 | Subaru | Tribeca | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2012 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2012 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2012 | Subaru | Tribeca | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2011 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2011 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2011 | Subaru | Tribeca | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2010 | Subaru | Legacy | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2010 | Subaru | Outback | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| 2010 | Subaru | Tribeca | 3.6L | H6 | N/A | OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.044"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug |
| No rows match your filter. | ||||||
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4506AP Exhaust — 7505DENSO Auto Parts — 470422041AA75022401AA75022401AA751IKH20TTPKH20TT