Surface Flatness Specifications

Head Flange Warpage
Standard 0.13 mm (0.005 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 (0.014 in. max.)
EGR Flange Warpage
Standard 0.10 mm (0.004 in. max.)
Service Limit 0.15 mm (0.006 in. max.)