01-04 GM 6.6L Duramax Ported Cast Iron Cylinder Head (One) LB7 Pacific Performance Engineering Bump Stops|Suspension Extreme-Duty Forged Idler Arm (158040300)

Extreme-Duty Forged Idler Arm (158040300)

Low-stretch tensile cord

preventing collapse

Note: Due to the 6mm wall thickness

01-04 GM 6.6L Duramax Ported Cast Iron Cylinder Head (One) LB7 Pacific Performance Engineering Bump Stops|Suspension Extreme-Duty Forged Idler Arm (158040300)The OEM Duramax cast aluminum cylinder heads fall short over time the differing heat expansion rates between the cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and or cracking in high performance applications where excessive heat is introduced. PPE's new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for