Denso 3025 W16ES-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.031" (0.8mm)

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

• Ground Electrode
• MaterialNickel
• TypeU-Groove
• Quantity1

• Specifications
• ResistorNo
• Heat Range16
• Torque SpecsCast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.

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

Automotive

• 1965
  • Nissan
    • 410 Base Verify fitment
    • 411 Base Verify fitment
• 1964
  • Nissan
    • 410 Base Verify fitment
    • 411 Base Verify fitment
• 1963
  • Nissan
    • 410 Base Verify fitment
    • 411 Base Verify fitment

Powersports

Sorry, no powersports applications are associated with this part.

Lawn & Garden

• Chain Saws
  • Red Max
    • Power Saws Verify fitment

Commercial & Industrial

• Commercial and Industrial Engines
  • Allis-Chalmers
    • G-262 Verify fitment
    • G-226 Verify fitment
  • Petter
    • 14mm Heads Verify fitment
  • Ford
    • 158, 175, 201, 256 cu in Verify fitment
• Farm Tractors and Equipment, Construction Machinery
  • Allis-Chalmers
    • A Verify fitment
    • C Verify fitment
    • E Verify fitment
    • D-19 Verify fitment
  • Sperry-New Holland
    • Speedrower Verify fitment
• Tractors
  • Ford
    • 3-Cylinder Verify fitment
    • 4-Cylinder Verify fitment
    • Other Models Verify fitment
• Industrial Tractors and Lift Trucks
  • Allis-Chalmers
    • G-153 Verify fitment
    • G-230 Verify fitment
    • TL-10 Verify fitment
    • TL-12 Verify fitment
    • TL-14 Verify fitment
  • Case
    • 1825 Verify fitment
    • 1835C Verify fitment
  • Ford
    • 158 cu in Verify fitment
    • 175 cu in Verify fitment
    • 201 cu in Verify fitment
    • 219 cu in Verify fitment
    • 250 cu in 14mm Heads. Verify fitment
    • 256 cu in Verify fitment
    • 280 cu in Verify fitment
    • 400 cu in Verify fitment
  • Gar-Bro
    • 1200 Verify fitment
  • Gehl
    • HL2500A Verify fitment
    • HL3000 Verify fitment
  • Hyster
    • All Models Verify fitment
    • H-Series Verify fitment
    • M-Series Verify fitment
    • Straddle Carriers Verify fitment
  • Komatsu
    • FG Series Verify fitment
  • Lull
    • 800 Verify fitment
  • Nissan
    • A12 Verify fitment
    • A15 Verify fitment
    • D11 (B Model) Verify fitment
    • H20 (B Model) Verify fitment
    • H30 (B Model) Verify fitment
  • Tractor-Loader
    • TL-10 Verify fitment
    • TL-11 Verify fitment
    • TL-12 Verify fitment
• Truck
  • Gar-Bro
    • Morris Minor Verify fitment