Description:
The Champion Copper Plus Spark Plug 991 is engineered for dependable ignition performance using proven copper-core technology. Designed to deliver consistent spark and efficient combustion, this plug helps maintain reliable engine operation across a wide range of vehicles, powersports equipment, and small engine applications.
The copper core center electrode provides excellent conductivity and precise heat control, supporting optimal performance and longevity. A corrosion-resistant coated shell enhances durability in harsh environments, while built-in resistor technology minimizes electrical interference to protect modern vehicle electronics.
Pre-gapped for convenience and built to OE specifications, the Champion 991 spark plug offers an easy installation and a reliable replacement solution for maintaining engine efficiency and performance.
Features:
- Copper core center electrode for strong conductivity and heat control
- Corrosion-resistant coated shell for durability in harsh environments
- Built-in resistor technology reduces electrical interference
- Pre-gapped at 0.035" (0.90 mm) for easy installation
- OE-quality design for proper fit, form, and function
- Provides dependable ignition in all weather conditions
- Thread diameter: 12 mm
- Reach: 1.043"
- Hex size: 14 mm (0.551")
- Seat type: Flat with crush washer included
- Ground electrode: Single, nickel material
- Resistor type spark plug for modern electronics compatibility
Fitment:
Polaris
- Scrambler 1000 XP: 2016, 2017, 2018
- Scrambler 1000 XP EPS: 2014, 2015
- Sportsman 1000 Touring XP: 2015–2018
- Sportsman 1000 Touring XP Limited: 2016
- Sportsman 1000 XP: 2015–2018
- Sportsman 1000 XP High Lifter Edition: 2016–2018
- Sportsman 1000 XP Hunter Edition: 2016–2018
- Sportsman WV850 HO: 2014
Yamaha Marine
- F115XB (L4)
- F115LB
- LF115XB (L4)
- F115JB
- VF115 V MAX SHO (L4)
Buick
- Enclave (V6 3.6L): 2009
- LaCrosse (V6 3.6L): 2005–2008 | (L4 2.4L): 2010, 2015, 2016
- Rainier (L6 4.2L): 2004–2007
- Regal (L4 2.4L): 2015–2017
- Rendezvous (V6 3.6L): 2004–2006
- Verano: (L4 2.0L / L4 2.4L Flex): 2015, 2016
Cadillac
- CTS: 2006–2009 (V6 3.6L), 2007 (V6 2.8L)
- SRX (V6 3.6L): 2005–2009
- STS (V6 3.6L): 2006–2009
Chevrolet
- Captiva Sport (L4 2.4L): 2015
- Cavalier (L4 2.2L): 2002–2005
- Classic (L4 2.2L): 2004–2005
- Cobalt: 2006–2010 (L4 2.0L / 2.4L)
- Colorado: 2004–2009 (L4 2.8–2.9L / L5 3.5–3.7L)
- Equinox: 2008–2009 (V6 3.6L), 2015–2017 (L4 2.4L)
- HHR: 2006–2009 (L4 2.0L / 2.2L / 2.4L)
- Malibu: 2004–2010 (L4 2.2L / 2.4L, V6 3.6L, Hybrid)
- Trailblazer: 2002–2009 (L6 4.2L)
- Trailblazer EXT: 2006 (L6 4.2L)
- Traverse (V6 3.6L): 2009
Ford / Lincoln / Mercury
- C-Max (L4 2.0L): 2017–2018
- Contour (L4 2.0L): 1995, 1997–2000
- Escape: 2001–2004 (L4 2.0L), 2009–2011 (L4 2.5L), 2021–2022 Hybrid/PHEV (L4 2.5L)
- Escort (L4 2.0L): 1998–2003
- Focus (L4 2.0L): 2000–2004
- Fusion: 2006–2012 (L4 2.3L / 2.5L)
- Maverick (L4 2.5L): 2022
- Transit Connect (L4 2.5L): 2018, 2021, 2022
- Corsair (L4 2.5L): 2021–2023
- MKZ (L4 2.5L): 2011–2012
- Mariner (L4 2.5L): 2009–2011
- Milan (L4 2.3L / 2.5L): 2006–2011
GMC / Hummer / Isuzu / Saab
- Acadia (V6 3.6L): 2009
- Canyon: 2004–2009 (L4 / L5 engines)
- Envoy: 2002–2009 (L6 4.2L)
- Envoy XL: 2005–2006 (L6 4.2L)
- Terrain (L4 2.4L): 2015–2017
- H3 / H3T: 2006–2009 (L5 3.5L / 3.7L)
- Ascender (L6 4.2L): 2003–2006
- i-280 / i-350: 2006
- 9-7x (L6 4.2L): 2005, 2008, 2009
Pontiac / Saturn / Suzuki / Mazda / Mercury
- G5, G6, G8, Grand Am, Solstice, Sunfire, Torrent: 2002–2010 (various L4/V6 engines)
- Saturn Aura, Vue, Sky, Outlook, L-Series: 2000–2009
- Suzuki Grand Vitara (V6 3.2L): 2009–2010
- Suzuki XL-7 (V6 3.6L): 2007–2009
- Mazda 5 (L4 2.5L): 2015
- Mazda Tribute (L4 2.0L): 2001–2002
- Mercury Cougar (L4 2.0L): 1999–2002
