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Home >> Chevrolet >> 2003 >> Chevy Express H2500 >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Specifications >> Fastener Tightening Specifications

Fastener Tightening Specifications

Fastener Tightening Specifications

Application Specification
Metric English
Catalytic Converter Clamp - Right Side 54 N.m 40 lb ft
Catalytic Converter Pipe to Exhaust Manifold Nuts 65 N.m 48 lb ft
Catalytic Converter to Muffler Retaining Nuts 48 N.m 35 lb ft
Exhaust Hanger Bolts 17 N.m 13 lb ft
Exhaust Manifold Bolts First Pass - 4.3L 15 N.m 11 lb ft
Exhaust Manifold Bolts Second Pass - 4.3L 30 N.m 22 lb ft
Exhaust Manifold Bolts First Pass - 4.8L, 5.3L, 6.0L 15 N.m 11 lb ft
Exhaust Manifold Bolts Second Pass - 4.8L, 5.3L, 6.0L 25 N.m 18 lb ft
Exhaust Manifold Studs 18 N.m 13 lb ft
Heat Shield Bolts 12 N.m 106 lb in
Spark Plug Wire Support Bolts 12 N.m 106 lb in