Product Description

Michigan Motorsports Ignition Coil Harness – Replaces 89017477

Fits Compatible GM Truck, LS2, LS3, LS7 & MSD Ignition Coils

Restore the wiring connection to your compatible GM ignition coils with this direct-replacement ignition coil harness from Michigan Motorsports. Designed to replace part number 89017477, this harness works with several common GM truck, LS2, LS3 and LS7 coil designs found across select Chevrolet, GMC and Cadillac V8 applications. Repeated exposure to engine heat can cause the original harness wiring and connectors to become hardened, brittle or damaged, making replacement an important part of servicing an aging ignition system. Cylinder-specific wire colors help identify the correct connector position during installation, while the extensive application coverage supports compatible 4.8L, 5.3L, 6.0L and 8.1L engines. Each harness services one side of the engine; choose a quantity of two when replacing both sides for a complete engine set.

Key Features & Benefits

• Direct Replacement for 89017477: This Michigan Motorsports ignition coil harness replaces the original harness used with compatible GM V8 engines and ignition coils. It provides a direct replacement when the factory wiring, insulation or coil connectors have become hardened, brittle or damaged from age and engine-bay heat.
• Compatible with Common GM Truck Coils: Designed for compatible D581 and D585 truck-style ignition coils, including coil part numbers 12558693, 10457730 and 19005218. This coverage supports numerous Chevrolet, GMC and Cadillac truck, SUV, van and commercial-vehicle applications.
• LS2, LS3, LS7 and MSD Coil Compatibility: The harness also supports compatible D513A and D514A LS2/LS7 coil designs, D510C LS3 coils and MSD 8287 ignition coils. Match the harness to the installed coil design and the supplied application information before ordering.
• Cylinder-Specific Wire Identification: The color of the second wire entering each coil connector identifies its correct cylinder position. This distinction is critical because the connectors must be placed at the matching cylinder locations rather than installed according to connector reach alone.
• Extensive GM V8 Application Coverage: Compatible applications include select 4.8L, 5.3L, 6.0L and 8.1L Chevrolet, GMC and Cadillac vehicles. Coverage includes Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Savana, Express, Kodiak and TopKick models.

Notes

• Important Wire-Color Fitment Note: Identify the color of the second wire entering each coil connector before installation. Purple fits cylinder 1 or 8, red fits cylinder 2 or 7, blue fits cylinder 3 or 6, and green fits cylinder 4 or 5.
• Driver-Side Cylinder Placement: Cylinder 1 uses purple, cylinder 3 uses blue, cylinder 5 uses green and cylinder 7 uses red.
• Passenger-Side Cylinder Placement: Cylinder 2 uses red, cylinder 4 uses green, cylinder 6 uses blue and cylinder 8 uses purple. Each harness services one side of the engine; order a quantity of two to replace both sides.

Key Fitments

• D581 (12558693) Truck Coil
• D585 (10457730 Delco, 19005218 Delphi) Truck Coil
• D513A (12570616) LS2/LS7 First Design
• D514A (12573190) LS2/LS7 Second Design
• MSD 8287 Coils
• D510C (12570616) LS3
• CADILLAC ESCALADE 2002-2005 – V8 5.3L
• CADILLAC ESCALADE 2002-2006 – V8 6.0L
• CHEVROLET AVALANCHE 1500 2002-2006 – V8 5.3L
• CHEVROLET AVALANCHE 2500 2003-2006 – V8 8.1L
• CHEVROLET C4500 KODIAK 2003-2009 – V8 8.1L
• CHEVROLET C5500 KODIAK 2003-2009 – V8 8.1L
• CHEVROLET C6500 KODIAK 2001-2009 – V8 8.1L
• CHEVROLET C7500 KODIAK 2001-2009 – V8 8.1L
• CHEVROLET EXPRESS 3500 2001-2002 – V8 8.1L
• CHEVROLET SILVERADO 1500 1999-2007 – V8 4.8L & 5.3L
• CHEVROLET SILVERADO 1500 2003-2007 – V8 6.0L
• CHEVROLET SILVERADO 1500 HD 2001-2003 – V8 6.0L
• CHEVROLET SILVERADO 1500 HD 2005-2007 – V8 6.0L
• CHEVROLET SILVERADO 2500 1999-2006 – V8 5.3L
• CHEVROLET SILVERADO 2500 1999-2004 – V8 6.0L
• CHEVROLET SILVERADO 2500 HD 2001-2006 – V8 6.0L
• CHEVROLET SILVERADO 2500 HD 2003-2007 – V8 8.1L
• CHEVROLET SILVERADO 3500 2004-2006 – V8 5.3L
• CHEVROLET SILVERADO 3500 2001-2006 – V8 6.0L
• CHEVROLET SILVERADO 3500 2003-2007 – V8 8.1L
• CHEVROLET SUBURBAN 1500 2000-2006 – V8 5.3L
• CHEVROLET SUBURBAN 1500 2006 – V8 6.0L
• CHEVROLET SUBURBAN 2500 2000-2006 – V8 6.0L
• CHEVROLET SUBURBAN 2500 2001-2006 – V8 8.1L
• CHEVROLET TAHOE 2000-2006 – V8 4.8L & 5.3L
• GMC C3500 2001-2002 – V8 8.1L
• GMC C4500 TOPKICK 2003-2009 – V8 8.1L
• GMC C5500 TOPKICK 2003-2009 – V8 8.1L
• GMC C6500 TOPKICK 2003-2009 – V8 8.1L
• GMC C7500 TOPKICK 2003-2009 – V8 8.1L
• GMC SAVANA 1500 2003-2007 – V8 5.3L
• GMC SAVANA 2500 2003-2007 – V8 4.8L & 6.0L
• GMC SAVANA 2500 2003-2005 – V8 5.3L
• GMC SAVANA 3500 2004-2007 – V8 4.8L
• GMC SAVANA 3500 2003-2007 – V8 6.0L
• GMC SAVANA 3500 2001-2002 – V8 8.1L
• GMC SIERRA 1500 1999-2007 – V8 4.8L & 5.3L
• GMC SIERRA 1500 2005-2007 – V8 6.0L
• GMC SIERRA 1500 HD 2001-2003 – V8 6.0L
• GMC SIERRA 1500 HD 2005-2007 – V8 6.0L
• GMC SIERRA 2500 1999-2000 – V8 5.3L
• GMC SIERRA 2500 1999-2004 – V8 6.0L
• GMC SIERRA 2500 HD 2001-2007 – V8 6.0L
• GMC SIERRA 2500 HD 2003-2007 – V8 8.1L
• GMC SIERRA 3500 2001-2007 – V8 6.0L
• GMC SIERRA 3500 2003-2007 – V8 8.1L
• GMC SIERRA C3 2001 – V8 6.0L
• GMC SIERRA DENALI 2002-2007 – V8 6.0L
• GMC YUKON 2000-2006 – V8 4.8L & 5.3L
• GMC YUKON 2001-2006 – V8 6.0L
• GMC YUKON XL 1500 2000-2006 – V8 5.3L
• GMC YUKON XL 1500 2001-2006 – V8 6.0L
• GMC YUKON XL 2500 2000-2006 – V8 6.0L
• GMC YUKON XL 2500 2003-2006 – V8 8.1L