Using new head bolts when performing a cylinder head installation is always a good idea however, on late-model engines that came from the factory with TTY (torque-to yield) head bolts, replacement is an absolute necessity. TTY bolts are designed to exert the maximum clamping force for a tight head gasket seal, however they permanently stretched and could fail if re-used. When a specific tightening torque has been reached, the bolts are turned further through a defined angle, which pre-loads them into the plastic region. Consequently, no retorquing is necessary.
Anmerkung für Kunden in Kalifornien - Warnung: Krebs und Schädigungen der Fortpflanzungsfähigkeit www.P65Warnings.ca.gov
Erstausrüstung / alternative Artikelnummern: 90005PT0003, 90006PT0003
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