Denso 4046 W27ES-U Nickel U-Groove Spark Plug

Denso U-Groove spark plugs feature a u-shaped groove in the ground electrode, giving the flame a groove to grow in, resulting in less flame dissipation and a larger flame front for a more complete combustion. This translates to better fuel efficiency and improved throttle response. Machine rolled threads prevent seizing or cross threading during installation and removal. 100% pre-fired to assure the highest quality possible. Purified alumina powder insulator provides exceptional strength and thermal conductivity. Five rib insulator prevents flashover. Copper-glass seal bonds center electrode and insulator for a gas-tight seal.

• Shell
• Thread Diameter14mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach19mm (3/4")
• Hex Size13/16" (21mm)
• Terminal TypeRemovable Nut
• Overall HeightJIS
• Gap.028" (0.7mm)

• Center Electrode
• MaterialNickel
• TypeStandard
• Size2.5mm
• ProjectionNon-Projected

• Ground Electrode
• MaterialNickel
• TypeU-Groove
• Quantity1

• Specifications
• ResistorNo
• Heat Range27
• Torque SpecsCast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.

• Part Information
• BrandDenso
• Warranty12 Months
• Longevity20-30k Miles

Automotive

Sorry, no automotive applications are associated with this part.

Powersports

• 2006
  • LEM
    • LX4 Base Verify fitment
• 2005
  • LEM
    • LX4 Base Verify fitment
• 2004
  • Gas Gas
    • SM 50 Base Verify fitment
  • LEM
    • LX4 Base Verify fitment
• 2003
  • LEM
    • LX4 Base Verify fitment
• 2002
  • LEM
    • LX4 Base Verify fitment
• 2001
  • LEM
    • LX4 Base Verify fitment
• 2000
  • LEM
    • LX4 Base Verify fitment
• 1999
  • Cobra
    • KING Base Verify fitment
  • LEM
    • LX4 Base Verify fitment
• 1998
  • Cobra
    • KING Base Verify fitment
• 1997
  • Husqvarna
    • WXC 250 Base Verify fitment
    • WXE 250 Base Verify fitment
• 1996
  • Husqvarna
    • WXC 250 Base Verify fitment
    • WXE 250 Base Verify fitment
  • KTM
    • 550 MXC Base Verify fitment
• 1995
  • Husqvarna
    • WXE 250 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
  • KTM
    • 250 EXC Base Verify fitment
    • 250 SX Base Verify fitment
    • 300 EXC Base Verify fitment
    • 440 EXC Base Verify fitment
    • 440 MXC Base Verify fitment
    • 550 MXC Base Verify fitment
• 1994
  • Husqvarna
    • WXE 250 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KDX250 Base Verify fitment
  • KTM
    • 250 EXC Base Verify fitment
    • 250 SX Base Verify fitment
    • 300 EXC Base Verify fitment
    • 300 MXC Base Verify fitment
    • 440 EXC Base Verify fitment
    • 440 MXC Base Verify fitment
    • 550 MXC Base Verify fitment
• 1993
  • Husqvarna
    • WXC 250 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KDX250 Base Verify fitment
  • KTM
    • 125 EXC Base Verify fitment
    • 250 EXC Base Verify fitment
    • 250 SX Base Verify fitment
    • 300 EXC Base Verify fitment
    • 300 MXC Base Verify fitment
    • 550 MXC Base Verify fitment
• 1992
  • Husqvarna
    • WXC 250 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KDX250 Base Verify fitment
  • KTM
    • 250 EXC Base Verify fitment
    • 250 SX Base Verify fitment
    • 300 DXC Base Verify fitment
    • 300 EXC Base Verify fitment
    • 300 SX Base Verify fitment
    • 500 SX Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
• 1991
  • Husqvarna
    • WXE 250 Base Verify fitment
    • WXE 260 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KDX250 Base Verify fitment
  • KTM
    • 250 EXC Base Verify fitment
    • 300 DXC Base Verify fitment
    • 300 EXC Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1990
  • Kawasaki
    • KDX200 Base Verify fitment
  • KTM
    • 300 DXC Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1989
  • Kawasaki
    • KDX200 Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1988
  • Kawasaki
    • KDX200 Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1987
  • Kawasaki
    • KDX200 Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1986
  • Husqvarna
    • XC125 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
• 1985
  • Kawasaki
    • KDX200 Base Verify fitment
    • ZX750 GPZ Base Verify fitment
  • Suzuki
    • LT250R QuadRacer Base Verify fitment
    • RM125 Base Verify fitment
    • RM80 Base Verify fitment
• 1984
  • Husqvarna
    • XC125 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KDX250 Base Verify fitment
    • KDX80 Base Verify fitment
    • KX60 Base Verify fitment
    • ZX750 GPZ Base Verify fitment
  • Suzuki
    • RM125 Base Verify fitment
    • RM80 Base Verify fitment
• 1983
  • Honda
    • CR80R Base Verify fitment
  • Husqvarna
    • XC125 Base Verify fitment
  • Kawasaki
    • KDX200 Base Verify fitment
    • KX60 Base Verify fitment
    • ZX750 GPZ Base Verify fitment
  • Suzuki
    • RM125 Base Verify fitment
  • Yamaha
    • IT250 Base Verify fitment
    • YZ60 Base Verify fitment
• 1982
  • Honda
    • CR80R Base Verify fitment
  • Husqvarna
    • XC125 Base Verify fitment
  • Kawasaki
    • KDX175 Base Verify fitment
    • KE125 Base Verify fitment
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
    • KX80 Base Verify fitment
  • Suzuki
    • RM125 Base Verify fitment
    • RM465 Base Verify fitment
    • RM80 Base Verify fitment
  • Yamaha
    • IT250 Base Verify fitment
    • YZ60 Base Verify fitment
    • YZ80 Base Verify fitment
• 1981
  • Honda
    • CR80R Base Verify fitment
  • Kawasaki
    • KDX175 Base Verify fitment
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
    • KX420 Base Verify fitment
    • KX80 Base Verify fitment
  • Suzuki
    • PE400 Base Verify fitment
    • RM100 Base Verify fitment
    • RM250 Base Verify fitment
    • RS250 Base Verify fitment
  • Yamaha
    • DT175 Base Verify fitment
    • EX440 Base Verify fitment
    • IT125 Base Verify fitment
    • IT175 Base Verify fitment
    • IT250 Base Verify fitment
    • YZ250 Base Verify fitment
    • YZ60 Base Verify fitment
• 1980
  • Can-Am
    • 125 MX-6 Base Verify fitment
    • 400 MX-6 Base Verify fitment
  • Honda
    • CR80R Base Verify fitment
  • Kawasaki
    • KDX175 Base Verify fitment
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
    • KX420 Base Verify fitment
    • KX80 Base Verify fitment
  • Suzuki
    • PE250 Base Verify fitment
    • PE400 Base Verify fitment
    • RM100 Base Verify fitment
    • RM125 Base Verify fitment
    • RM250 Base Verify fitment
  • Yamaha
    • DT175 Base Verify fitment
    • IT125 Base Verify fitment
    • IT175 Base Verify fitment
    • IT250 Base Verify fitment
    • SRX440 Base Verify fitment
    • YZ250 Base Verify fitment
    • YZ50 Base Verify fitment
• 1979
  • Kawasaki
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
  • Suzuki
    • RM100 Base Verify fitment
    • RM125 Base Verify fitment
    • RM250 Base Verify fitment
  • Yamaha
    • IT175 Base Verify fitment
    • IT250 Base Verify fitment
    • SRX440 Base Verify fitment
    • YZ250 Base Verify fitment
• 1978
  • Honda
    • CR125M Base Verify fitment
  • Kawasaki
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
  • Suzuki
    • PE175 Base Verify fitment
    • RM100 Base Verify fitment
    • RM125 Base Verify fitment
    • RM250 Base Verify fitment
  • Yamaha
    • IT250 Base Verify fitment
    • SR433 Base Verify fitment
    • SRX440 Base Verify fitment
    • YZ250 Base Verify fitment
• 1977
  • Honda
    • CR125M Base Verify fitment
  • Kawasaki
    • KX125 Base Verify fitment
  • Suzuki
    • GT250 Base Verify fitment
    • RM100 Base Verify fitment
    • RM125 Base Verify fitment
    • RM250 Base Verify fitment
    • RM370 Base Verify fitment
  • Yamaha
    • IT250 Base Verify fitment
    • SRX440 Base Verify fitment
    • YZ250 Base Verify fitment
• 1976
  • Honda
    • CR125M Base Verify fitment
    • CR250M Base Verify fitment
  • Kawasaki
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
    • KX400 Base Verify fitment
  • Suzuki
    • GT250 Base Verify fitment
    • RM100 Base Verify fitment
    • RM125 Base Verify fitment
    • RM250 Base Verify fitment
    • RM370 Base Verify fitment
  • Yamaha
    • DT400 Base Verify fitment
    • MX125 Base Verify fitment
    • TY175 Base Verify fitment
    • YZ125 Base Verify fitment
    • YZ250 Base Verify fitment
• 1975
  • Honda
    • CR125M Base Verify fitment
    • CR250M Base Verify fitment
  • Kawasaki
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
    • KX400 Base Verify fitment
  • Suzuki
    • RM125 Base Verify fitment
  • Yamaha
    • DT400 Base Verify fitment
    • GPX338 Base Verify fitment
    • GPX433 Base Verify fitment
    • MX125 Base Verify fitment
    • MX400 Base Verify fitment
    • SR643 Base Verify fitment
    • YZ125 Base Verify fitment
    • YZ250 Base Verify fitment
• 1974
  • Honda
    • CR125M Base Verify fitment
    • CR250M Base Verify fitment
  • Kawasaki
    • KX125 Base Verify fitment
    • KX250 Base Verify fitment
  • Yamaha
    • DT360 Base Verify fitment
    • GPX338 Base Verify fitment
    • GPX433 Base Verify fitment
    • MX125 Base Verify fitment
    • YZ125 Base Verify fitment
    • YZ250 Base Verify fitment
• 1973
  • Honda
    • CR250M Base Verify fitment
  • Yamaha
    • EW643 Base Verify fitment
    • RT2 Base Verify fitment
    • RT3 Base Verify fitment
    • SR433 Base Verify fitment
    • SR643 Base Verify fitment
• 1972
  • Yamaha
    • AT2M Base Verify fitment
    • EW643 Base Verify fitment
    • RT2 Base Verify fitment
• 1971
  • Yamaha
    • AT1M Base Verify fitment
    • RT1 Base Verify fitment
    • SS433 Base Verify fitment
• 1970
  • Yamaha
    • AT1M Base Verify fitment
    • RT1 Base Verify fitment
• 1969
  • Yamaha
    • SS338 Base Verify fitment

Lawn & Garden

• Mowers
  • Casal
    • M 233 Verify fitment
    • M 234 Verify fitment