Surface Flatness Specifications

Head Flange Warage
Standard 0.13 mm (0.0051 in. max.)
Service Limit 0.20 mm (0.008 in. max.)
Throttle Body Flange Warpage
Standard 0.10 mm (0.004 in. max.)
Service Limit 0.15 mm (0.006 in. max.)
EGR Flange Warpage
Standard 0.10 mm (0.004 in. max.)
Service Limit 0.15 mm (0.006 in. max.)