AUTOMOTIVE PART
NGK Spark Plug 3785
Spark Plug, Standard
Part 3785NGKSpark 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 Number3785
ManufacturerNGK
Part TypeSpark Plug
Part Details
Part Specifications
| Center Electrode Core Material | Copper |
|---|---|
| Center Electrode Tip Material | Nickel |
| 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 | 13/16" |
| Insulator Height | 2.13 IN |
| Insulator Material | Ceramic |
| Manufacturer Heat Range | 7 |
| Material Grade | Nickel/Copper |
| Part Number | BPR7ES SOLID |
| Pre-Gap Size | .032 IN |
| Reach | 0.750 IN |
| Resistance | 5000.0 82 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Short Style Spark Plug | No |
| Stock Number | 3785 |
| Thread Diameter | 0.551 IN |
| Thread Diameter | 14.0 MM |
Verified Vehicle Fitment
Make: Cobra, Honda, Polaris
Model: 10 verified models — see exact combinations below.
Years: 1978–1979, 1994–1997, 2019 — 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 (10 configuration groups)
| Years | Make | Model | Position | Engine / transmission / notes |
|---|---|---|---|---|
| 2019 | Cobra | CX50 FWE | — | Engine: - --; Gap 0.032in |
| 2019 | Cobra | CX50 P3 | — | Engine: - --; Gap 0.032in |
| 2019 | Cobra | CX50-JR | — | Engine: - --; Gap 0.032in |
| 2019 | Cobra | CX50-SR | — | Engine: - --; Gap 0.032in |
| 1978–1979 | Honda | Civic | — | Engine ID: ED4; OE Equivalent Design, Gap 0.032in |
| 1996 | Polaris | Hurricane | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1994–1995 | Polaris | SL 650 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1997 | Polaris | SL 700 Deluxe | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1994–1995 | Polaris | SL 750 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
| 1995 | Polaris | SLT 750 | — | Engine: - --; Actual OE Manufacturer, Gap 0.028in |
Source: supplier-verified applications for NGK 3785. A vehicle not listed is not confirmed compatible.
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