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.
Chevrolet - 1998-00 Metro L3 1.0L, 1989-91 Sprint L3 1.0L, Geo - 1989-97 Metro L3 1.0L, Pontiac - 1989-91 Firefly L3 1.0L, 1994-00 Firefly L3 1.0L, Suzuki - 1992-94 Swift L3 1.0L
Notes
Documents
Package Information
Orderable Status:YesQuantity:1Package UOM:Smallest Pack (Consumer Level)Package Level GTIN:00023913659059Package Bar Code:023913659059Weight Variance:0.000000000Stacking Factor:0Inner Quantity:0
Extended Information
Country of Origin (Primary):TWEmission Code:Legal USHarmonized Tariff Code (HTS):7318159000Harmonized Tariff Code (Schedule B):7318159000Life Cycle Status Code:Available to OrderLife Cycle Status Description:Available to OrderMSDS Required Flag:NoNational Popularity Code:Last 5% of Product Group Sales Value National Popularity Description:Last 5% of Product Group Sales ValuePallet Layer Maximum:1
Interchange
Fel-Pro:ES74021Magirus:HB33087MAHLE Original:GS33242Navistar:96059992