AUTOMOTIVE PART
NGK Spark Plug 7866
Spark Plug, IFR5N10 NGK, Laser Iridium
Part 7866NGKSpark Plug
Match your exact vehicle configuration to the verified applications below.
Confirm the year, make, model, engine, drivetrain and required position before ordering.
Confirm the year, make, model, engine, drivetrain and required position before ordering.
Is This the Right Part?
Manufacturer Part Number7866
ManufacturerNGK
Part TypeSpark Plug
Part Details
Part Specifications
| Center Electrode Core Material | Copper |
|---|---|
| Center Electrode Tip Material | Iridium |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | J-Gap |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Hex Size | 5/8" (16mm) |
| Insulator Height | 1.99 IN |
| Insulator Material | Ceramic |
| Manufacturer Heat Range | 5 |
| Material Grade | Iridium Platinum |
| Part Number | IFR5N10 |
| Pre-Gap Size | .040 IN |
| Prop65 | NA |
| Reach | 0.750 IN |
| Resistance | 5000.0 82 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Short Style Spark Plug | No |
| Stock Number | 7866 |
| Thread Diameter | 0.551 IN |
| Thread Diameter | 14.0 MM |
Verified Vehicle Fitment
Make: Jaguar, Land Rover
Model: 12 verified models — see exact combinations below.
Years: 1993–2010 — varies by model and configuration.
Check before ordering: Match the year, make, model, position, and every engine, transmission or other restriction in the same row. Listed years do not apply to every model.
View vehicle applications (21 configuration groups)
| Years | Make | Model | Position | Engine / transmission / notes |
|---|---|---|---|---|
| 2007–2008 | Jaguar | S-Type | — | Engine: 4.2 V8; Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2004–2006 | Jaguar | S-Type | — | Engine: 4.2 V8; Gap 0.040in |
| 2003 | Jaguar | S-Type | — | Engine: 4.2 V8; OE Equivalent Design, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2005–2009 | Jaguar | Super V8 | — | Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 1998–1999, 2004–2009 | Jaguar | Vanden Plas | — | Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2000–2003 | Jaguar | Vanden Plas | — | Aspiration: Normal; Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2000–2003 | Jaguar | Vanden Plas | — | Aspiration: Super-Chrg; Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 1993–1997 | Jaguar | Vanden Plas | — | Gap 0.035in |
| 2009 | Jaguar | XF | — | Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2010 | Jaguar | XF | — | Engine: 4.2 V8; Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 1998–2009 | Jaguar | XJ8 | — | Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 1999 | Jaguar | XJR | — | Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, From VIN # F0035, Gap 0.040in |
| 2000–2009 | Jaguar | XJR | — | Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2007–2009 | Jaguar | XK | — | Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 1997–2006 | Jaguar | XK8 | — | Actual OE Manufacturer, 100,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2000 | Jaguar | XKR | — | Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, From VIN # A00116, Gap 0.040in |
| 2001–2009 | Jaguar | XKR | — | Actual OE Manufacturer, 60,000 mi OE Mfr Recommended Service Interval, Gap 0.040in |
| 2006–2009 | Land Rover | LR3 | — | Engine: 4.4 V8; Actual OE Manufacturer, 105,000 mi OE Mfr Recommended Service Interval, Gap 0.039in |
| 2005 | Land Rover | LR3 | — | Engine: 4.4 V8; Actual OE Manufacturer, 90,000 mi OE Mfr Recommended Service Interval, Gap 0.039in |
| 2006–2009 | Land Rover | Range Rover | — | Actual OE Manufacturer, 105,000 mi OE Mfr Recommended Service Interval, Gap 0.039in |
| 2006–2009 | Land Rover | Range Rover Sport | — | Actual OE Manufacturer, 105,000 mi OE Mfr Recommended Service Interval, Gap 0.039in |
Source: supplier-verified applications for NGK 7866. A vehicle not listed is not confirmed compatible.
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