R44LTSM | Spark Plug

Resistor Plug: Yes
Center Electrode Core Material: Copper
Center Electrode Material: Nickel
Gap: 0.044"
Ground Configuration: Single
Ground Electrode Core Material: Nickel Alloy
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Single Prong Electrode
Heat Range: 4
Hex Size: 0.625"
Hex Size: 15.88 mm
Insulator Height: 2.026"
Resistance: 2-12 kOhm
Spark Plug Seat Style: Conical
Thread Diameter: 0.551"
Thread Reach: 0.679" 

Fits:

Buick
Allure 2008-2009
Century 1987-1989, 1993
Lacrosse 2008-2009
Rainier 2004-2007
Regal 1988-1993
Skyhawk 1987-1989 

Cadillac
CTS 2004-2007, 2009-2010
Cimarron 1987-1988
Escalade 2002-2010 

Chevrolet
Avalanche 2002-2010
Beretta 1987-1993
Camaro 1999-2002, 2010
Cavalier 1987-1994, 1997
Celebrity 1987-1990
Colorado 2009-2010
Corsica 1987-1993
Corvette 1999-2010
Express 2003-2010
Impala 2006-2009
Lumina 1990-1994
Monte Carlo 2006-2007
SSR 2003-2006
Silverado 1500 1999-2010
Silverado 2500 1999-2010
Silverado 3500 2001-2010
Suburban 2000-2010
Tahoe 2000-2010
Trailblazer 2003-2009 

GMC
Canyon 2009-2010
Envoy 2003-2009
Savana 2003-2010
Sierra 1500 1999-2010
Sierra 2500 1999-2010
Sierra 3500 2001-2010
Yukon 2000-2010
Yukon Denali 2001-2010

Hummer
H2 2003-2009
H3 2008-2010
H3T 2009-2010

Oldsmobile
Ciera 1987-1989, 1993
Cutlass 1987-1993
Firenza 1987-1988 

Pontiac
Firebird 1999-2002
G8 2008-2009
GTO 2004-2006
Grand Prix 1988-1993, 2005-2008
Sunbird 1991-1994
Sunfire 1997
Tempest 1987-1991
6000 1987-1991