Jeep Cylinder Head Components & Repair Parts

For a 3.6L Pentastar V6 (Wrangler, Grand Cherokee), expect R15,000-R25,000 for a replacement cylinder head plus R8,000-R12,000 labour at Johannesburg or Cape Town workshops. Complete head gasket jobs on 2.8L CRD diesel engines run R12,000-R18,000 including machining and parts.

Minor issues like valve seat wear or small cracks can be repaired through machining and welding at specialized engine shops in Pretoria or Durban (R5,000-R10,000). Severe warping on 3.6L Pentastar heads from overheating or multiple cracks requires replacement, as repairs often fail under Jeep's high compression ratios.

Always replace the head gasket, head bolts (they're torque-to-yield on most modern Jeeps), valve cover gasket, and intake/exhaust manifold gaskets. Budget R2,500-R4,500 for a complete gasket kit for 3.6L Pentastar or 2.0L Turbo engines—reusing old gaskets guarantees leaks.

The 3.8L V6 (2007-2011 JK) has known cylinder head cracking issues between cylinders 3-4 due to thin casting and overheating. Running low coolant on South African summer heat or pushing hard on 4x4 trails accelerates this—replacement heads cost R12,000-R18,000 each.

Expect 8-12 hours labour for a Grand Cherokee WK2 3.6L V6 cylinder head job, including removal, machining surface checks, and reinstallation. Most Gauteng workshops quote 2-3 days turnaround to allow for parts delivery and head pressure testing.