LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2004 >> Century Base >> 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 Bolt 45 N.m 33 lb ft
Catalytic Converter Nuts 60 N.m 44 lb ft
EGR Adapter Pipe to Exhaust Manifold Bolt 3.8L 29 N.m 21 lb ft
Engine Lift Bracket Bolt/Nut 30 N.m 22 lb ft
Exhaust Crossover Pipe Bolt/Nut 3.1L 25 N.m 18 lb ft
Exhaust Crossover Pipe Bolt/Stud 3.8L 20 N.m 15 lb ft
Exhaust Crossover Pipe Heat Shield Bolt 3.1L 10 N.m 89 lb in
Exhaust Crossover Pipe Heat Shield Nut 20 N.m 15 lb ft
Exhaust Manifold Bolt/Nut 3.8L 30 N.m 22 lb ft
Exhaust Manifold Heat Shield Bolt 3.1L 10 N.m 89 lb in
Exhaust Manifold Heat Shield Nuts 3.8L 20 N.m 15 lb ft
Exhaust Manifold Nut 3.1L 16 N.m 12 lb ft
Exhaust Manifold Pipe Stud Nut 35 N.m 26 lb ft
Exhaust Pipe Rear Hanger Bolt 25 N.m 18 lb ft
Fuel Injector Sight Shield Bracket Nut 30 N.m 22 lb ft
Rear Bumper Impact Bar Bolt 25 N.m 18 lb ft