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Fastener Specifications

Single Use Non-Threaded Fasteners/Components

NOTE:

All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal. 

Application
Catalytic Converter Gasket
Catalytic Converter Seal
Exhaust Manifold Gasket
Exhaust Muffler Gasket
Single Use Threaded Fastener/Component Tightening Specifications

NOTE:

All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal. 

Application Specification
Metric (English)
Exhaust Control Valve Actuator Fastener (LT4) 6 N.m (53 lb in)
Exhaust Manifold Fasteners (LTG)
  • First Pass:
20 N.m (15 lb ft)
  • Second Pass:
20 N.m (15 lb ft)
  • Final Pass:
20 N.m (15 lb ft)
Reusable Threaded Fastener Tightening Specifications

NOTE:

All fasteners listed in this table can be reused after removal. 

Application Specification
Metric (English)
Catalytic Converter Brace Bracket Bolt 22 N.m (16 lb ft)
Catalytic Converter Brace Bracket Nut 22 N.m (16 lb ft)
Catalytic Converter to Cylinder Head (LGX) 46 N.m (34 lb ft)
Catalytic Converter to Cylinder Head Nut (LT4) 50 N.m (37 lb ft)
Catalytic Converter to Turbocharger Fasteners (LF3) 46 N.m (34 lb ft)
Catalytic Converter to Turbocharger Nut (LTG) 50 N.m (37 lb ft)
Exhaust Manifold Brace Fasteners (LTG) 25 N.m (18 lb ft)
Exhaust Manifold Fasteners (LT4)
  • Existing Cylinder Head
23 N.m (17 lb ft)
  • New Cylinder Head
27 N.m (20 lb ft)
Exhaust Manifold Heat Shield Bolt (LT4) 10 N.m (89 lb in)
Exhaust Manifold Heat Shield Fasteners (LTG) 14 N.m (124 lb in)
Exhaust Muffler to Catalytic Converter Clamp (LT4) 22 N.m (16 lb ft)
Exhaust Muffler to Catalytic Converter Nut (LTG, LGX, LT4) 50 N.m (37 lb ft)
Exhaust Rear Muffler Rear Hanger Fasteners 40 N.m (30 lb ft)
Floor Panel Number 4 Bar Fasteners 22 N.m (16 lb ft)
Front Air Deflector Fasteners 9 N.m (80 lb in)
Front Body Exhaust Heat Shield Fasteners 9 N.m (80 lb in)
Intermediate Body Exhaust Heat Shield Fasteners 9 N.m (80 lb in)
Rear Body Exhaust Heat Shield Bolt 9 N.m (80 lb in)
Rear Body Exhaust Heat Shield Fasteners 1.75 N.m (15 lb in)
Turbocharger Heat Shield Fasteners (LF3) 9 N.m (80 lb in)
Turbocharger Oil Feed Pipe Hollow Screw (LF3) 35 N.m (26 lb ft)