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NGK 6701 Spark Plug
| Brand | NGK 6701 |
|---|---|
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | Slant |
| Ground Electrode Core Material | Platinum |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Pin Type |
| Hex Size | 13/16 |
| Insulator Height | 60.00 |
| Manufacturer Heat Range | 9 |
| Part Number | RE9B-T |
| Pre-Gap Size | .048 |
| Reach | .75 |
| Resistance | 5000 |
| Seat Type | Flat |
| Stock Number | 6701 |
| Thread Diameter | 14.00 |
| Product line | Laser Iridium Spark Plug |
| Fits | Mazda · 8 vehicles |
Laser iridium design. Iridium center electrode helps deliver precise, consistent spark performance.
Platinum ground electrode. Adds durability for dependable ignition over time.
OE supplier heritage. Built by NGK, a long-time original equipment spark plug manufacturer.
Cross-references AMS Automotive 6701, DENSO Auto Parts 5752 and 0000-18-N3Y1 for the same application. See all 10.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
NGK Laser Iridium Spark Plug for Mazda RX-8
The NGK Laser Iridium Spark Plug, part number 6701, is built for the 2004-2011 Mazda RX-8 trailing position. It uses an iridium center electrode tip, platinum ground electrode core, and a 0.048" pre-gap to support consistent ignition performance in the rotary engine application.
Key Features
- Laser Iridium spark plug from NGK
- Part number 6701, OE reference RE9B-T
- Fits 2004-2011 Mazda RX-8, trailing
- 0.048" pre-gap for the specified application
- Iridium center electrode tip with platinum ground electrode core
- Pin-type ground electrode tip design with slant ground configuration
- 14 mm thread diameter, 0.75" reach, flat seat
- 5000 ohm resistance and 13/16 hex size
Product Details
NGK is a long-standing OE supplier with broad coverage across domestic and import vehicles, and this Laser Iridium spark plug reflects that original-equipment focus. The RE9B-T specification and stock number 6701 identify the correct trailing plug application for the Mazda RX-8, while the iridium and platinum electrode materials support stable spark delivery under demanding ignition conditions. This part cross-references DENSO Auto Parts 5752 for the same application.
Common Replacement Reasons
- Misfire or rough running in the trailing ignition circuit
- Hard starting or inconsistent ignition performance
- Worn plug electrodes affecting spark quality
- Service interval replacement for the Mazda RX-8 trailing plug
- Restoring OE-style ignition specifications on the RX-8
Installation Notes
Verify the trailing position before installation on the Mazda RX-8 and confirm the specified 0.048" gap. Use the correct 13/16" spark plug socket, thread the plug by hand first, and tighten to the vehicle manufacturer’s torque specification. Check the ignition system condition if the vehicle has repeated misfire concerns.
Quality Assurance
NGK manufactures spark plugs to OE standards and supplies a wide range of automotive ignition components for North American and global applications. Part number 6701 is built to match the listed Mazda RX-8 trailing plug specification.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2010 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2009 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2008 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2007 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2006 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2005 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
| 2004 | Mazda | RX-8 | 1.3L | R2 | N/A | Trailing; Gap 0.048"; Actual OE Manufacturer; 37,500 mi OE Mfr Recommended Service Interval; Laser Iridium Spark Plug |
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