Description

Chevrolet / Holden F18D4 Cylinder Head Assembly – Cruze / Trax / Orlando / Epica / Lacetti / Sonic

This Chevrolet / Holden F18D4 cylinder head assembly is a brand new, factory-fresh replacement for the 1.8-litre DOHC petrol engine used across the Cruze, Trax, Orlando, Epica, Lacetti and Sonic ranges. It is supplied with valves and camshafts fitted — intake and exhaust valves, springs, retainers, stem seals, guides and both DOHC camshafts are already installed, so the head arrives ready for installation after transferring your external components.

What’s Included – Fitted to the Head

• Complete cylinder head casting — precision-machined, pressure-tested and surface-ground
• 16 valves — intake and exhaust, heat-resistant (4 per cylinder)
• Valve springs, spring seats and retainers
• Valve stem seals and valve guides — fitted and honed
• DOHC camshafts — intake and exhaust
• Hydraulic lifters / tappets — pre-installed
• Camshaft bearing caps — torqued to specification
• Core plugs and oil gallery plugs — installed

What you transfer from your original head: valve cover, timing belt kit (belt, tensioner and idler), head bolts (always fit new stretch bolts), head gasket and remaining gaskets, fuel injectors, spark plugs, ignition coils, intake manifold, exhaust manifold, EGR valve (where fitted) and any sensors or brackets mounted to the head.

Vehicle Compatibility — Model and Engine Code Detail

The Short Description lists the basic model range. The fitment below is the model-level detail needed to confirm the correct casting before ordering. The 55571690 casting is shared across a wide range of GM platforms, but emission equipment and calibration differ between model years and markets — match the OE reference to your original head.

• Chevrolet Cruze (J300, J305) — F18D4 1.8L DOHC, approximately 2009–2016
• Chevrolet Trax / Tracker (Europe, Gmsa) — F18D4 1.8L DOHC, approximately 2013–2020
• Chevrolet Orlando (KL1Y) — F18D4 1.8L DOHC, approximately 2011–2014
• Chevrolet New Epica — F18D4 1.8L DOHC, approximately 2007–2015
• Chevrolet Lacetti / Optra — F18D4 1.8L DOHC, approximately 2003–2011
• Chevrolet Sonic — F18D4 1.8L DOHC, approximately 2012–2018
• Chevrolet Astra / Vectra 1.8 — F18D4 / Z18XER applications, select years and markets
• Holden Cruze (JG, JH) — F18D4 1.8L DOHC, approximately 2009–2016

This cylinder head is specific to the F18D4 / Z18XER / A18XER 1.8L DOHC 16-valve petrol engine. It is NOT interchangeable with the 1.6L F16D4, the 1.4L F14D4, the 1.8L F18D3 (earlier belt-driven variant with different casting), or any diesel engine in the Chevrolet / Holden range.

OEM Part Number Cross-Reference

• Primary reference: 55571690
• Interchangeable references: 55568363, 55561746, 55565451, 55568116, 55581285, 55578758, 55578759, 55567657
• Engine code cross-reference: F18D4, Z18XER, A18XER, 2H0

Why Buy This F18D4 Cylinder Head Assembly

• 100% brand new — not reconditioned or repaired
• Pressure-tested and vacuum-tested for leaks and porosity before dispatch
• Flatness-checked and deck surface-ground to OEM tolerance
• Valves, lifters and DOHC camshafts pre-installed — saves hours of fitting time
• Correct F18D4 casting for Cruze, Trax, Orlando, Epica, Lacetti and Sonic applications
• Packed in a reinforced crate for safe international freight
• Fast global shipping to port or door

More Cylinder Heads & Quick Contact

• Browse more Chevrolet cylinder heads: View our complete Chevrolet cylinder head catalog.
• Fitment check: Send us your OEM number and a photo of your original head on WhatsApp for a same-day compatibility confirmation and freight quote.