Stage 8 Locking Header Bolt Kit - 12pt. 3/8-16 x 1" (12) Quick Time No setup or calibration required

No setup or calibration required (Free Air Calibration is optional for added precision)

Splined Bearing Shoulder

Available in many combinations of radius

2003-2004 GMC Envoy XL

Stage 8 Locking Header Bolt Kit - 12pt. 3/8-16 x 1" (12) Quick Time No setup or calibration requiredProduct Description: Header Bolt Locking 3 8 16 in Thread 1 in Long 12 Point Head Steel Nickel Plated Various Applications Set of 12 Stage 8 Locking Fasteners has provided Fail Safe Joint Integrity For Critical Applications over 22 years. Stage 8 Locking Fasteners are available in kits, ready to install on all critical automotive parts like headers, starters or turbos. Stage 8 Locking Fasteners easily install on all popular makes and models and are