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Looking for aftermarket parts to modify or upgrade your 2004 Subaru Outback with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.
 OUT OF STOCK 5463NGK Laser Platinum Series plugs provide high ignitability and longer service life. Laser welded dual platinum surfaces ensure slow wear rate providing stable idel, superior anti fouling, improved fuel efficiency and lower emissions.... NGK Double Platinum Spark Plug Box of 4 (FR5AP-11) 2004-2004 Subaru Outback Base 2004-2005 Subaru Outback Limited $52.53 |
IN STOCK - LOW 7654NGK Laser Platinum Series plugs provide high ignitability and longer service life. Laser welded dual platinum surfaces ensure slow wear rate providing stable idel, superior anti fouling, improved fuel efficiency and lower emissions.... NGK Double Platinum Spark Plug Box of 4 (PLFR6A-11) 2001-2004 Subaru Outback L.L. Bean 2002-2004 Subaru Outback H6 2004-2004 Subaru Outback H6 35th Anniversary Edition / H6 VDC $68.20 |
 OUT OF STOCK 1483NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Spark Plug Copper Core Box of 4 (LFR6CGP) 2001-2004 Subaru Outback L.L. Bean 2002-2004 Subaru Outback H6 2004-2004 Subaru Outback H6 35th Anniversary Edition / H6 VDC $48.43 |
 IN STOCK 6619The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium Spark Plug Box of 4 (LFR6AIX-11) 2001-2004 Subaru Outback L.L. Bean 2002-2004 Subaru Outback H6 2004-2004 Subaru Outback H6 35th Anniversary Edition / H6 VDC $54.25 |
 IN STOCK 3672NGK standard plugs are constructed for longer life and optimum performance.... NGK Nickel Spark Plug Box of 4 (LFR6A-11) 2001-2004 Subaru Outback L.L. Bean 2002-2004 Subaru Outback H6 2004-2004 Subaru Outback H6 35th Anniversary Edition / H6 VDC $50.71 |
 IN STOCK 94122NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions.... NGK Ruthenium HX Spark Plug Box of 4 (LFR6AHX-S) 2001-2004 Subaru Outback L.L. Bean 2002-2004 Subaru Outback H6 2004-2004 Subaru Outback H6 35th Anniversary Edition / H6 VDC $66.88 |