LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2014 >> Impala LS >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Specifications >> Fastener Tightening Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fastener Tightening Specifications

Fastener Tightening Specifications

Application Specification
Metric English
Catalytic Converter to Cylinder Head Fastener (LFX)
  • First Pass
20 15 lb ft
  • Second Pass
45 33 lb ft
Catalytic Converter Brace Fastener (LFX) 58 43 lb ft
Catalytic Converter Brace Fastener (LKW) 22 16 lb ft
Catalytic Converter Brace Fastener (LUK) 25 18 lb ft
Catalytic Converter to Exhaust Manifold (LKW) 50 37 lb ft
Drivetrain and Front Suspension Support Fasteners (Front Hanger Bracket) 60 44 lb ft
Drivetrain and Front Suspension Support Fasteners (Front Suspension Frame) 160 118 lb ft
Exhaust Pipe Front Hanger Bracket Isolator Fastener 9 80 lb in
Exhaust Front Pipe-to-Muffler Fastener (LFX,LKW) 18 13 lb ft
Exhaust Front Pipe to Catalytic Converter Fastener (LFX) 50 37 lb ft
Exhaust Front Pipe to Catalytic Converter Fastener (LKW) 25 18 lb ft
Exhaust Manifold Heat Shield Fasteners (LKW) 14 N.m 10 lb ft
Exhaust Manifold Heat Shield Fasteners (LUK) 10 N.m 89 lb in
Exhaust Manifold to Cylinder Head Fasteners (LKW)
  • First Pass
20 15 lb ft
  • Final Pass
20 15 lb ft
Exhaust Rear Pipe Hanger Bracket Fastener 22 16 lb ft