Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire, incredibly low resistance without electronic interference! In a single 8 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps, one for the sleeve of the wire and another separate crimp to grasp the conductor. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps, one for the sleeve of the wire and another separate crimp to grasp the conductor.

Manufacturer-listed applications

Match the engine, body, trim and installation requirements. All qualifications shown for an application apply together. Where this part requires a modified or aftermarket assembly, the vehicle listing alone does not confirm compatibility with factory equipment.

Vehicle	Configuration and qualifications
2005–2006 Isuzu Ascender 2005–2006 Chevrolet Trailblazer EXT 2007–2008 Chevrolet Avalanche 2008 Chevrolet Express 1500 2006–2007 Chevrolet Trailblazer 2007–2008 Chevrolet Suburban 1500 2007–2008 Chevrolet Tahoe 2008 GMC Savana 1500	Engine: 5.3L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 325
2005 Isuzu Ascender	Engine: 4.2L inline-6 Quantity: 1 Submodel: S Engine displacement (cu in): 256
2005 Isuzu Ascender	Engine: 5.3L V8 Quantity: 1 Submodel: S Engine displacement (cu in): 325
2005 Isuzu Ascender	Engine: 5.3L V8 Quantity: 1 Submodel: Limited Engine displacement (cu in): 325
2005 Isuzu Ascender	Engine: 4.2L inline-6 Quantity: 1 Submodel: LS Engine displacement (cu in): 256
2005–2007 Buick Rainier	Engine: 5.3L V8 Quantity: 1 Submodel: CXL Engine displacement (cu in): 325
2005 Buick Rainier	Engine: 5.3L V8 Quantity: 1 Submodel: CXL Plus Engine displacement (cu in): 325
2008 Buick LaCrosse	Engine: 5.3L V8 Quantity: 1 Submodel: Super Engine displacement (cu in): 325
2007–2008 Cadillac Escalade ESV 2007–2008 Cadillac Escalade EXT 2007–2008 Cadillac Escalade 2008 Chevrolet Corvette	Engine: 6.2L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 376
2008 Cadillac Escalade ESV 2008 Cadillac Escalade	Engine: 6.2L V8 Quantity: 1 Submodel: Platinum Engine displacement (cu in): 376
2006–2007 Cadillac CTS	Engine: 6.0L V8 Quantity: 1 Submodel: V Engine displacement (cu in): 364
2005–2006 Chevrolet Trailblazer EXT 2007–2008 Chevrolet Avalanche 2008 Chevrolet Express 1500 2006–2008 Chevrolet Trailblazer 2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Suburban 1500 2007–2008 Chevrolet Tahoe 2008 GMC Savana 1500	Engine: 5.3L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 325
2005–2006 Chevrolet SSR 2005–2007 Chevrolet Corvette 2008 Chevrolet Express 2500 2008 Chevrolet Express 3500 2008 GMC Savana 2500 2008 GMC Savana 3500 2005–2006 Pontiac GTO	Engine: 6.0L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 364
2007–2008 Chevrolet Avalanche 2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Suburban 1500 2007–2008 Chevrolet Tahoe	Engine: 5.3L V8 Quantity: 1 Submodel: LTZ Engine displacement (cu in): 325
2007–2008 Chevrolet Avalanche 2008 Chevrolet Express 1500 2008 Chevrolet Trailblazer 2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Suburban 1500 2007–2008 Chevrolet Tahoe 2008 GMC Savana 1500 2007–2008 GMC Yukon	Engine: 5.3L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 325
2007–2008 Chevrolet Avalanche 2008 Chevrolet Express 2500 2008 Chevrolet Express 3500 2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Silverado 2500 HD 2007–2008 Chevrolet Suburban 1500 2007–2008 Chevrolet Suburban 2500 2007–2008 Chevrolet Silverado 3500 HD 2008 GMC Savana 2500 2008 GMC Savana 3500	Engine: 6.0L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 364
2007–2008 Chevrolet Avalanche 2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Silverado 2500 HD 2007–2008 Chevrolet Suburban 1500 2007 Chevrolet Suburban 2500 2007–2008 Chevrolet Silverado 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: LTZ Engine displacement (cu in): 364
1998–2002 Chevrolet Camaro	Engine: 5.7L V8 Quantity: 1 Submodel: Z28 SS Engine displacement (cu in): 350
1998–2002 Chevrolet Camaro	Engine: 5.7L V8 Quantity: 1 Submodel: Z28 Engine displacement (cu in): 350
1997–2004 Chevrolet Corvette 2004 Pontiac GTO	Engine: 5.7L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 350
1998 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: Indianapolis 500 Pace Car Engine displacement (cu in): 350
2001–2004 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: Z06 Engine displacement (cu in): 350
2003 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: 50th Anniversary Edition Pace Car Engine displacement (cu in): 350
2003 Chevrolet Corvette	Engine: 5.7L V8 Quantity: 1 Submodel: 50th Anniversary Edition Engine displacement (cu in): 350
2006–2008 Chevrolet Corvette	Engine: 7.0L V8 Quantity: 1 Submodel: Z06 Engine displacement (cu in): 427
2008 Chevrolet Corvette	Engine: 7.0L V8 Quantity: 1 Submodel: 427 Limited Edition Z06 Engine displacement (cu in): 427
2008 Chevrolet Express 2500 2008 Chevrolet Express 3500 2007–2008 Chevrolet Suburban 2500 2008 GMC Savana 2500 2008 GMC Savana 3500	Engine: 6.0L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 364
2008 Chevrolet Express 2500 2008 Chevrolet Express 3500 2008 GMC Savana 2500 2008 GMC Savana 3500	Engine: 4.8L V8 Quantity: 1 Submodel: Base Engine displacement (cu in): 294
2006–2008 Chevrolet Impala 2006–2007 Chevrolet Monte Carlo	Engine: 5.3L V8 Quantity: 1 Submodel: SS Engine displacement (cu in): 325
2006–2008 Chevrolet Trailblazer	Engine: 6.0L V8 Quantity: 1 Submodel: SS Engine displacement (cu in): 364
2007–2008 Chevrolet Silverado 1500 2007–2008 Chevrolet Tahoe	Engine: 4.8L V8 Quantity: 1 Submodel: LS Engine displacement (cu in): 294
2007–2008 Chevrolet Silverado 1500	Engine: 4.8L V8 Quantity: 1 Submodel: LT Engine displacement (cu in): 294
2007–2008 Chevrolet Silverado 1500 2007–2008 GMC Sierra 1500	Engine: 4.8L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 294
2007–2008 Chevrolet Silverado 1500 2007–2008 GMC Sierra 1500	Engine: 5.3L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 325
2007–2008 Chevrolet Silverado 2500 HD 2007–2008 Chevrolet Silverado 3500 HD 2007–2008 GMC Sierra 2500 HD 2007–2008 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: WT Engine displacement (cu in): 364
2007–2008 Chevrolet Tahoe	Engine: 5.3L V8 Quantity: 1 Submodel: PPV Engine displacement (cu in): 325
2008 Chevrolet Tahoe	Engine: 5.3L V8 Quantity: 1 Submodel: Z71 Engine displacement (cu in): 325
2008 Chevrolet Tahoe 2008 GMC Yukon	Engine: 6.0L V8 Quantity: 1 Submodel: Hybrid Engine displacement (cu in): 364
2005 GMC Envoy XL 2007–2008 GMC Sierra 1500 2007–2008 GMC Yukon	Engine: 5.3L V8 Quantity: 1 Submodel: SLT Engine displacement (cu in): 325
2005 GMC Envoy XL 2007–2008 GMC Sierra 1500 2007–2008 GMC Yukon	Engine: 5.3L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 325
2005 GMC Envoy XL 2005–2008 GMC Envoy	Engine: 5.3L V8 Quantity: 1 Submodel: Denali Engine displacement (cu in): 325
2007–2008 GMC Sierra 1500 2007–2008 GMC Yukon XL 1500	Engine: 6.2L V8 Quantity: 1 Submodel: Denali Engine displacement (cu in): 376
2007–2008 GMC Sierra 1500 2007–2008 GMC Sierra 2500 HD 2007–2008 GMC Yukon XL 1500 2007–2008 GMC Yukon XL 2500 2007–2008 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 364
2007–2008 GMC Sierra 1500 2007–2008 GMC Sierra 2500 HD 2007–2008 GMC Yukon XL 1500 2007–2008 GMC Yukon XL 2500 2007–2008 GMC Sierra 3500 HD	Engine: 6.0L V8 Quantity: 1 Submodel: SLT Engine displacement (cu in): 364
2007–2008 GMC Sierra 1500 2007–2008 GMC Yukon	Engine: 4.8L V8 Quantity: 1 Submodel: SLE Engine displacement (cu in): 294
2007–2008 GMC Sierra 1500	Engine: 4.8L V8 Quantity: 1 Submodel: SL Engine displacement (cu in): 294
1998–2002 Pontiac Firebird	Engine: 5.7L V8 Quantity: 1 Submodel: Formula Engine displacement (cu in): 350
1998–2002 Pontiac Firebird	Engine: 5.7L V8 Quantity: 1 Submodel: Trans Am Engine displacement (cu in): 350
2005–2008 Pontiac Grand Prix	Engine: 5.3L V8 Quantity: 1 Submodel: GXP Engine displacement (cu in): 325
2008 Pontiac G8	Engine: 6.0L V8 Quantity: 1 Submodel: GT Engine displacement (cu in): 364
2005 Saab 9-7x	Engine: 5.3L V8 Quantity: 1 Submodel: Arc Engine displacement (cu in): 325
2006–2008 Saab 9-7x	Engine: 5.3L V8 Quantity: 1 Submodel: 5.3i Engine displacement (cu in): 325
2008 Saab 9-7x	Engine: 6.0L V8 Quantity: 1 Submodel: Aero Engine displacement (cu in): 364
2008 Hummer H3	Engine: 5.3L V8 Quantity: 1 Submodel: Alpha Engine displacement (cu in): 325