ASTRA 1992-1998 1.4 Cylinder Head 90322813 90502537 for Chevrolet Opel Astra Corsa 1.4 1.4LPG C14NZ Engine – OEM 90322813

Product Overview: This C14NZ cylinder head is a complete, ready-to-install replacement intended for Opel vehicles. The casting is machined to original-equipment tolerances so deck flatness, valve seat concentricity and port geometry match the factory component. Each assembly is pressure tested and covered by a 12-month warranty. It is intended for replace/repair use and is a cost-effective alternative to reconditioning a damaged original head. The unit is inspected for flatness and gallery cleanliness prior to dispatch, ensuring it is ready for immediate fitment.

Key Features: Each unit is cast in high-grade aluminium alloy or cast iron and CNC-machined for flatness, concentricity and port accuracy. Valve seats and guides are installed and honed to size, and combustion chamber volumes are balanced for uniform compression and a clean idle. Extra material around the valve bridge and injector bores improves durability under heat cycling, and the cam carrier face is precision ground for correct bearing clearance. All internal oil and coolant galleries are cleaned, inspected and flow-checked before the head is assembled and tested. The casting is dimensionally stable and accepts original-specification gaskets, bolts and ancillary components.

Vehicle Compatibility: Applications covered by this head include ASTRA 1992-1998; CORSA 2006-2016. Confirmation of the engine code and the numbers on the original casting is recommended to guarantee a correct match. Coverage spans the 1992-1998, 2006-2016 model years.

Specifications: Engine code / family: C14NZ; Material: high-grade aluminium alloy or cast iron; Size: STD; Condition: New, supplied for replace/repair use; Warranty: 12 Months; Packaging: neutral export carton.

OEM / Reference Numbers: Reference numbers associated with this application are 90322813, 90502537, 93349916. Matching at least one number together with the engine code ensures the correct casting revision is supplied.

Applications: This head is intended for Opel cars and light commercial vehicles in daily service, and for the workshops that maintain them. It is equally suited to engine reconditioners handling volume cylinder head replacement and to owners restoring a vehicle after a head gasket, valve or overheating failure. Common uses include head gasket failure repair, valve and seat replacement, overheating damage rectification and complete engine overhaul.

Benefits / Replacement Information: This replacement head delivers the sealing and flow characteristics of the original while removing the machining costs normally associated with salvage. It restores compression, cures coolant and combustion leakage, and eliminates the risk of reusing a marginal casting.

Installation or Fitment Notes: Prior to installation, remove all traces of the old gasket, clean the block deck and bolt threads, and confirm the head surface is flat. Use the correct gasket for the engine variant, replace torque-to-yield bolts with new items, and follow the workshop torque sequence exactly. Refill with the specified coolant and bleed any trapped air.