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Marine & Outboard Spark Plugs

NGK Nickel Spark Plug BR8HCS-10 (1157)

SKU: GB-BR8HCS-10

$23.95
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The NGK BR8HCS-10 (Stock No. 1157) is a resistor spark plug designed for selected high-output Suzuki two-stroke outboard motors, including DT90, DT100, DT115 and DT140 applications. It features a special low-angle ground electrode, nickel centre electrode, copper-core construction and a 1.0 mm factory gap. Its M14 thread, 12.7 mm reach and 20.8 mm hex suit engines specifically specifying BR8HCS-10.

Key benefits

Key Benefits

  • - NGK Stock Number: 1157
  • - Designed for selected Suzuki two-stroke outboards
  • - Special low-angle ground electrode
  • - Wide-gap configuration
  • - Built-in resistor helps suppress electrical interference
  • - Nickel centre electrode
  • - Copper-core construction for efficient heat transfer
  • - 1.0 mm / 0.039" factory gap
  • - NGK heat range 8
  • - M14 × 1.25 thread
  • - 12.7 mm / ½" reach
  • - Flat gasket seat

Specifications & Dimensions

  • - Brand: NGK
  • - Part Number: BR8HCS-10
  • - NGK Stock Number: 1157
  • - Spark Plug Type: Resistor
  • - Thread Diameter: 14 mm / 0.551"
  • - Thread Size: M14 × 1.25
  • - Thread Reach: 12.7 mm / 0.500"
  • - Hex / Spanner Size: 20.8 mm / 13/16"
  • - Factory Spark Gap: 1.0 mm / 0.039"
  • - NGK Heat Range: 8
  • - Seat Type: Flat / gasket
  • - Resistor: Yes
  • - Centre Electrode Material: Nickel
  • - Ground Electrode: Special low-angle design
  • - Metal Type: Nickel
  • - Terminal: Threaded

Compatible Outboard Motors

  • Suzuki Outboards
  • - Suzuki DT90 – 90 HP — through 2000
  • - Suzuki DT90 V4 – 90 HP — 1991–1995
  • - Suzuki DT90TC – 90 HP — through 1995
  • - Suzuki DT100 – 100 HP — through 2000
  • - Suzuki DT100 V4 – 100 HP — 1991–1995
  • - Suzuki DT100TC – 100 HP — through 1995
  • - Suzuki DT115 – 115 HP — selected 1991–1997 applications
  • - Suzuki DT140 – 140 HP — selected 1996 application
  • - Suzuki PU140 – 140 HP — selected 1989–1995 applications

NGK marine data separates DT90 applications by production period

  • - DT90 through 2000: BR8HCS-10 – 1.0 mm
  • - DT90 from 2001 onward: BR8HS-10 – 1.0 mm

Suzuki DT100

  • - DT100 through 2000: BR8HCS-10 – 1.0 mm
  • - DT100 from 2001 onward: BR8HS-10 – 1.0 mm

Cross-Reference / Related Spark Plugs

  • - NGK: BR8HCS-10
  • - NGK Stock No.: 1157
  • - Related NGK: BR8HS
  • - Related NGK: BR8HS-10
  • - Related NGK Iridium: BR8HIX — only where specifically approved for the engine
  • These related plugs should not automatically be treated as direct substitutes, particularly because BR8HCS-10 has a special low-angle ground-electrode configuration.

Signs the Spark Plug Needs Replacing

  • - Difficult starting
  • - Rough idle
  • - Engine misfire
  • - Hesitation during acceleration
  • - Reduced power
  • - Poor high-RPM performance
  • - Increased fuel consumption
  • - Heavy carbon deposits
  • - Oil or fuel fouling
  • - Worn electrodes
  • - Corrosion
  • - Cracked ceramic insulator

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