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OE Quality
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NGK
Standard Spark PlugNGK 3611 Spark Plug
| Brand | NGK 3611 |
|---|---|
| Resistance | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | .028 |
| Ground Electrode Quantity | 1 |
| Hex Size | 13/16 |
| Insulator Height | 55.00 |
| Manufacturer Heat Range | 4 |
| Seat Type | Flat |
| Reach | .5 |
| Thread Diameter | 14.00 |
| Part Number | Bp4hs |
| Stock Number | 3611 |
| Product line | Standard Spark Plug |
| Fits | Honda, Suzuki, and Yamaha · 93 vehicles |
OE-style design. Built to original-equipment dimensions for consistent service replacement.
Copper core center. Supports stable ignition transfer with nickel electrode tips.
Standard spark plug. Flat seat, 14 mm thread, and removable nut terminal.
Cross-references Anchor 3611, CSF 4013 and CSF 4015 for the same application. See all 32.
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$11.76
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Overview
NGK 3611 is a standard spark plug built to OE-style specifications for small-displacement engines that call for a flat seat, 14 mm thread, and 0.028 in. pre-gap. It uses a copper core center electrode with nickel tips and a removable nut terminal for straightforward service. Fits Yamaha PW50, Yamaha QT50, and Honda NC50 applications where BP4HS-equivalent fitment is specified.
NGK’s Standard Spark Plug line focuses on original-equipment dimensions and consistent ignition performance. Part number 3611 is also identified as BP4HS, making it easier to match the correct replacement when cross-checking service references.
Key Features
- Standard spark plug design with OE-style dimensions
- Copper core center electrode for stable ignition transfer
- Nickel center and ground electrode tips
- Flat seat construction with 14 mm thread diameter
- Removable nut terminal for common ignition lead setups
- Pre-gapped to 0.028 in. for listed applications
Detailed Description
This NGK spark plug is engineered for small engines that require a conventional resistor plug with a standard ground configuration and 0.5 in. reach. The 13/16 in. hex size and flat seat design match the service requirements found across many Yamaha, Suzuki, and Honda models in the fitment list. Part number 3611, also referenced as BP4HS, is used in applications such as Yamaha PW50, Yamaha QT50, and Honda NC50.
As part of NGK’s Standard Spark Plug line, this plug reflects the brand’s long OE supply history and focus on maintaining original equipment standards. That makes it a practical choice when replacing a worn plug in engines that depend on the specified heat range, gap, and terminal style.
What It Is Used For
- Restoring ignition performance when the existing plug is fouled or worn
- Correcting hard starting caused by incorrect gap or heat range
- Addressing misfire, rough idle, or weak spark conditions
- Replacing a plug with the wrong seat, reach, or terminal style
- Maintaining proper combustion in small two-stroke and utility engines
Installation Notes and Tips
Verify the engine calls for BP4HS-equivalent specifications before installation. Confirm the gap requirement against the application notes, since some listed fitments use a 0.024 in. gap while others use 0.028 in. Check the seat type, thread diameter, reach, and terminal style before tightening to specification.
Quality Assurance
NGK is a major OE spark plug supplier in North America with more than 80 years of automotive experience. Part number 3611 is manufactured to original-equipment standards for durability and consistent operation.
This part fits 93 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2020 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2019 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2018 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2017 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2016 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2015 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2014 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2013 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2012 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2009 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2008 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2007 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2006 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2005 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2004 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2003 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2002 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2001 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 2000 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1999 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1998 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1997 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1996 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1995 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1994 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1993 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1993 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1992 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1992 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1991 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1991 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1991 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1990 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1990 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1990 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1989 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1989 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1989 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1988 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1988 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1988 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1987 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1987 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1987 | Suzuki | LT50 QuadRunner | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1987 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1987 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1986 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1986 | Suzuki | LT50 QuadRunner | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1986 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1986 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1985 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1985 | Suzuki | LT50 QuadRunner | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1985 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1985 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Suzuki | ALT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Suzuki | LT50 QuadRunner | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1984 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1983 | Suzuki | ALT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1983 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1983 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1983 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1983 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Suzuki | FZ50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Yamaha | MJ50 | -L | -- | Gap 0.024"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1982 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Honda | NA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Honda | NC50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Suzuki | FA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Suzuki | FS50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Suzuki | FZ50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Yamaha | PW50 | -L | -- | Gap 0.028"; Actual OE Manufacturer; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1981 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1980 | Honda | NA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1980 | Honda | NC50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1980 | Suzuki | FZ50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1980 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1980 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1979 | Honda | NA50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1979 | Honda | NC50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1979 | Suzuki | FZ50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1979 | Suzuki | JR50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1979 | Yamaha | QT50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1978 | Honda | NC50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1977 | Honda | NC50 | -L | -- | Gap 0.028"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1973 | Suzuki | MT50 | -L | -- | Gap 0.024"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| 1971 | Suzuki | F50 | -L | -- | Gap 0.024"; Sell Out and Reorder BPR4HS (Stock # 7823); Standard Spark Plug |
| No rows match your filter. | |||||
Directly replaces or cross-references 32 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 3611CSF — 4013CSF — 4015DENSO Auto Parts — 4014Standard Ignition — AV82065-01401-90065-01403-9077-32051709482-0016109482-0017009482-0029113979-6771-113979-6771-690890-7807392070-205294701-0015994703-0015998076-54719160610-78010150261370E4TCE6TET12355FA25129L15YL95YT07900013W14FP-LW14FP-UW14FP-ULW14FPR