Denso R-U11 Resistor U-Groove Spark Plug

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.

Vehicle Fitments:

Year	Make	Model	Submodel
1999 - 2001	Saab	9-3	Base
1999 - 2002	Saab	9-3	SE, Viggen
2001 - 2002	Saab	9-3	Turbo
2000 - 2005	Saab	9-5	2.3t, Aero
1999	Saab	9-5	Base
2000	Saab	9-5	Gary Fisher
2002 - 2005	Saab	9-5	Linear, Arc
1999 - 2002	Saab	9-5	SE