Hooker 12 mm x 1.75 Thread Bolt - 4.724" Long - Hex Head - Grade 10 - Nuts Included - Steel - Zinc Plated - Engine Mount - GM LS-Series/LT-Series 53111111 1972-1977 Buick Skylark

1972-1977 Buick Skylark

These Y-pipe assemblies use Flowmaster's patented D-port technology and can be used with the factory rear muffler sections or with Flowmaster Axle-back kits

die-cast aluminum componentsVehicle Applications: 2014-2018 Chevrolet Silverado 1500

Self-contained

2017-2018 GMC Sierra 1500 69

Hooker 12 mm x 1.75 Thread Bolt - 4.724" Long - Hex Head - Grade 10 - Nuts Included - Steel - Zinc Plated - Engine Mount - GM LS-Series/LT-Series 53111111 1972-1977 Buick SkylarkProduct Description: Bolt 12 mm x 1. 75 Thread 5. 906 in Long Hex Head Grade 10 Nuts Included Steel Zinc Plated Engine Mount GM LS Series LT Series Kit In 1962 Gary Hooker designed a header for his new 409 Chevrolet. He immediately found a demand for this header from other racers in the area. It was not long before Gary had hired employees and was operating Hooker Headers out of a building in South Ontario, CA. The Hooker philosophy was simple make