These coils mount directly in place of factory style versions and accept the OEM connectors as well. Performace output is improved thanks to a careful selection of better materials and...

Holley's cast aluminum valve covers for GM LS engines provide a fresh, refined look without the need to relocate the coils. There's no question the factory "coil on cover" design...

Designed to open at 160 degrees every time, regardless of engine rpm, and it's high-flow design and brass and copper construction eliminate the damaging effects of cycling when you're stuck...

Designed to open at 180 degrees every time, regardless of engine rpm, and it's high-flow design and brass and copper construction eliminate the damaging effects of cycling when you're stuck...

Look no further when it's time to tune-up your LS! Bolt on legendary ignition performance with MSD's direct replacement coils. Reliable parts from the ignition leader at a price that...

The LS Ignition controller includes a built-in 2.5 Bar MAP sensor that can be used with Naturally Aspirated or boosted applications. This allows for timing advance or retard based on...

ACCEL now offers the cure for burnt spark plug wire boots with Extreme 9000 Ceramic Wire kits. The 8mm Ferro-Spiral core wire now has ceramic boots on the spark plug...

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...

The Superchips Flashpaq 2845 is the ultimate handheld tuner for 1999–2016 GM cars and trucks, including the Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Suburban, Camaro, and more. Designed with daily...

Holley's tall LS valve covers are the latest addition to our extensive line of LS engine components that will add a custom touch to your engine bay and help you...

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...