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Denso Spark Plugs

The U-Groove is Engineered for Greater Fuel Efficiency

DENSO's patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap created by the U shape. The ball of fire created in the U-Groove develops a larger and hotter flash front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures.

Even DENSO's "standard" spark plug is something special. The innovative design that helped to make DENSO spark plugs famous, the U-Groove plug employs a unique, channeled ground electrode designed to generate a larger spark nucleus at the point of ignition. Greater spark energy than ordinary plugs means improved flame travel, producing more complete, consistent, and efficient combustion.

 Features: 

  • 100 percent pre-fired to ensure reliable operation
  • Copper core center electrode for superior thermal conductivity
  • Unique five-rib insulator reduces flashover
Benefits: 
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars



Manufacturer Model- Item Name Product Image Price
DENSO K16PRU

K16PRU DENSO SPARK PLUG

DENSO SPARK PLUG K16PRU
K16PRU DENSO SPARK PLUG  $2.53 $2.83
Save: 11% off


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DENSO K16PRU11

K16PRU-11 DENSO SPARK PLUG

DENSO SPARK PLUG K16PRU11 *Limit to 8 plugs.
K16PRU-11 DENSO SPARK PLUG  $1.95 $2.83
Save: 31% off


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Max: 8
DENSO Q16PRU

Q16PRU DENSO SPARK PLUG

DENSO SPARK PLUG Q16PRU
Q16PRU DENSO SPARK PLUG  $1.95 $2.83
Save: 31% off


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DENSO Q16PRU11

Q16PRU-11 DENSO SPARK PLUG

DENSO SPARK PLUG Q16PRU11
Q16PRU-11 DENSO SPARK PLUG  $1.95 $2.83
Save: 31% off


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DENSO T14PRU

T14PRU DENSO SPARK PLUG

DENSO SPARK PLUG T14PRU
T14PRU DENSO SPARK PLUG  $1.95 $2.95
Save: 34% off


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DENSO T16PRU

T16PRU DENSO SPARK PLUG

DENSO SPARK PLUG T16PRU
T16PRU DENSO SPARK PLUG  $1.95 $2.95
Save: 34% off


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DENSO T16PRU11

T16PRU-11 DENSO SPARK PLUG

DENSO SPARK PLUG T16PRU11
T16PRU-11 DENSO SPARK PLUG  $1.95 $2.46
Save: 21% off


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DENSO W14EXRU

W14EXRU DENSO SPARK PLUG

DENSO SPARK PLUG W14EXRU
W14EXRU DENSO SPARK PLUG  $1.95 $2.95
Save: 34% off


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DENSO W14LMU

W14LMU DENSO SPARK PLUG

DENSO SPARK PLUG W14LMU
W14LMU DENSO SPARK PLUG  $2.22 $2.85
Save: 22% off


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DENSO W16LS

W16LS DENSO SPARK PLUG

DENSO SPARK PLUG W16LS
W16LS DENSO SPARK PLUG  $1.95 $2.50
Save: 22% off


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DENSO W20MRU

W20MR-U DENSO SPARK PLUG

DENSO SPARK PLUG W20MRU
W20MR-U DENSO SPARK PLUG  $1.95 $2.67
Save: 27% off


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DENSO W20MU

W20MU DENSO SPARK PLUG

DENSO SPARK PLUG W20MU
W20MU DENSO SPARK PLUG  $1.95 $2.67
Save: 27% off


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DENSO W20SRU

W20SR-U DENSO SPARK PLUG

DENSO SPARK PLUG W20SR-U
W20SR-U DENSO SPARK PLUG  $1.87 $2.83
Save: 34% off


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DENSO W9LMUS

W9LM-US DENSO SPARK PLUG

DENSO SPARK PLUG W9LM-US
W9LM-US DENSO SPARK PLUG  $1.95 $2.50
Save: 22% off


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DENSO W9LMRUS

W9LMR-US DENSO SPARK PLUG

DENSO SPARK PLUG W9LMR-US
W9LMR-US DENSO SPARK PLUG  $1.95 $2.50
Save: 22% off


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