AUTOMOTIVE PART
NGK Spark Plug 3923
Spark Plug, BPR8ES, Standard
Part 3923NGKSpark 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 Number3923
ManufacturerNGK
Part TypeSpark Plug
Part Details
Part Specifications
| Center Electrode Core Material | Copper |
|---|---|
| Center Electrode Tip Material | Nickel |
| Electrical Terminal Type | Removable Nut |
| Ground Configuration | J-Gap |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Hex Size | 13/16" |
| Insulator Height | 2.13 IN |
| Insulator Material | Ceramic |
| Manufacturer Heat Range | 8 |
| Material Grade | Nickel/Copper |
| Part Number | BPR8ES |
| Pre-Gap Size | .032 IN |
| Prop65 | NA |
| Reach | 0.750 IN |
| Resistance | 5000.0 82 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Short Style Spark Plug | No |
| Stock Number | 3923 |
| Thread Diameter | 0.551 IN |
| Thread Diameter | 14.0 MM |
Verified Vehicle Fitment
Make: Aprilia, Cobra, Ferrari, Kawasaki, Maserati, Polaris, Porsche, Yamaha
Model: 32 verified models — see exact combinations below.
Years: 1964–1990, 1995–2007, 2010–2011, 2017–2018 — 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 (41 configuration groups)
| Years | Make | Model | Position | Engine / transmission / notes |
|---|---|---|---|---|
| 2005–2007 | Aprilia | Mojito Custom 50 | — | Engine: - --; Gap 0.032in |
| 2004 | Aprilia | Mojito Custom 50 | — | Engine: - --; with Piaggia Engine, Gap 0.032in |
| 2017–2018 | Cobra | CX50 FWE | — | Engine: - --; Gap 0.024in |
| 2017–2018 | Cobra | CX50 P3 | — | Engine: - --; Gap 0.024in |
| 2011, 2017–2018 | Cobra | CX50-JR | — | Engine: - --; Gap 0.024in |
| 2010–2011, 2018 | Cobra | CX50-SR | — | Engine: - --; Gap 0.024in |
| 1968 | Ferrari | 275 GT | — | Engine: 3.3 V12; Actual OE Manufacturer, Gap 0.025in |
| 1964–1968 | Ferrari | 275 GTB | — | Engine: 3.3 V12; Actual OE Manufacturer, Gap 0.025in |
| 1977–1981 | Ferrari | 512 BB | — | Actual OE Manufacturer, Gap 0.025in |
| 1968–1969 | Ferrari | Dino 206 GT | — | Engine: 2.0 V6; OE Equivalent Design, Gap 0.025in |
| 1969–1973 | Ferrari | Dino 246 GT | — | Engine: 2.4 V6; OE Equivalent Design, Gap 0.025in |
| 1972–1973 | Ferrari | Dino 246 GTS | — | Engine: 2.4 V6; OE Equivalent Design, Gap 0.025in |
| 1988–1989 | Kawasaki | KD80 | — | Engine: - --; Gap 0.032in |
| 1989–1990 | Maserati | 430i | — | OE Equivalent Design, Gap 0.028in |
| 1983–1986 | Maserati | Biturbo | — | OE Equivalent Design, Gap 0.028in |
| 1987 | Maserati | Biturbo | — | Fuel Delivery Type: CARB; OE Equivalent Design, Gap 0.028in |
| 2002–2004 | Polaris | Freedom | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1997 | Polaris | Hurricane | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 2000–2001 | Polaris | Pro 1200 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1997 | Polaris | SL 1050 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1997 | Polaris | SL 700 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1996–1997 | Polaris | SL 780 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1996–1997 | Polaris | SL 900 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1999–2001 | Polaris | SLH | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1996–1997 | Polaris | SLT 780 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1999 | Polaris | SLTH | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1996–1999 | Polaris | SLTX | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1999 | Polaris | SLX | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1995–1996 | Polaris | SLX 780 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 2000–2004 | Polaris | Virage | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1985–1989 | Porsche | 911 | — | Engine: 3.3 H6; OE Equivalent Design, 30,000 mi OE Mfr Recommended Service Interval, Gap 0.024in |
| 1970–1971 | Porsche | 911 | — | Engine: 2.2 H6; Sub Model: S; OE Equivalent Design, Gap 0.024in |
| 1972–1973 | Porsche | 911 | — | Engine: 2.3 H6; Sub Model: S; OE Equivalent Design, Gap 0.024in |
| 1972–1973 | Porsche | 911 | — | Engine: 2.4 H6; Sub Model: S; OE Equivalent Design, Gap 0.024in |
| 1976–1977 | Porsche | 911 | — | Engine: 3.0 H6; OE Equivalent Design, Gap 0.024in |
| 1981–1984 | Porsche | 911 | — | Engine: 3.3 H6; OE Equivalent Design, Gap 0.024in |
| 1974 | Porsche | 911 | — | Engine: 2.7 H6; Sub Model: Carrera; OE Equivalent Design, Gap 0.028in |
| 1975 | Porsche | 911 | — | Sub Model: Carrera; OE Equivalent Design, Gap 0.028in |
| 1978–1979 | Porsche | 930 | — | OE Equivalent Design, Gap 0.028in |
| 1981–1983 | Yamaha | XJ650L Turbo Seca | — | Engine: - --; Gap 0.032in |
| 1985 | Yamaha | XJ700 Maxim | — | Engine: - --; Gap 0.032in |
Source: supplier-verified applications for NGK 3923. A vehicle not listed is not confirmed compatible.
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