Description

VAG 1.9 TD AAZ Complete Cylinder Head Assembly – Valves & Camshaft Pre-Installed

This VAG 1.9 TD AAZ cylinder head is a brand new casting, machined to OEM tolerances and supplied as an assembled head with 8 valves, springs, retainers, stem seals, guides, hydraulic lifters, pre-chambers and camshaft already fitted. For a workshop doing an AAZ head replacement, that removes the most time-consuming part of the job — lapping valves, setting installed heights and torquing the camshaft caps — and lets you move straight to transferring injectors, manifolds and timing components.

Why These Heads Fail

These engines are now 25–30 years old. Typical AAZ head failures include:

• Cracking between the valve seats — the classic failure, usually after an overheating event or coolant loss
• Pre-chamber cracking or looseness — causes compression loss, hard cold starting and coolant pressurisation
• Valve seat recession from high combustion temperatures and long service intervals
• Valve guide wear — oil consumption, blue smoke on startup, failed emissions tests
• Warping from a failed head gasket or a low-coolant event
• Camshaft lobe and hydraulic lifter wear where oil changes have been stretched
• Injector bore and heat shield sealing problems

Once an AAZ head has been resurfaced past minimum thickness it cannot be reliably saved, and welding a 30-year-old alloy diesel head is a false economy. This complete cylinder head assembly restores the top end to factory condition without the turnaround time of a repair.

What’s Included – Fitted to the Head

The following components arrive pre-installed and ready to use:

• Cylinder head casting — new aluminium alloy, pressure-tested and flatness-checked
• 8 valves — 2 per cylinder, intake and exhaust, heat-resistant
• Valve springs, spring seats and retainers
• Valve stem seals — fitted
• Valve guides — pressed in
• Pre-combustion chambers (pre-chambers) — installed
• Camshaft — SOHC, AAZ configuration
• Hydraulic lifters / tappets — pre-installed
• Camshaft bearing caps and bolts — torqued to specification
• Core plugs and oil gallery plugs — installed
• Valve seats — machined and sealing-checked

What You Transfer From Your Old Head

These parts are not supplied and must be reused or replaced during the job:

• Fuel injectors and heat shields
• Glow plugs
• Valve cover / rocker cover and gasket
• Camshaft sprocket and hub
• Timing belt, tensioner, idler and water pump
• Head bolts — always fit new stretch bolts
• Head gasket and remaining gaskets and seals
• Intake manifold and EGR components where fitted
• Exhaust manifold and turbocharger (K03 / K14 depending on application)
• Vacuum pump, sensors and wiring

Vehicle Compatibility

Fitted to a wide range of VW Group models running the AAZ 1.9 TD engine. Always confirm your engine code and OEM number before ordering.

• Audi 80 B4 Avant (8C5) — 1.9 TD AAZ (1991–1994)
• Audi 80 B4 Saloon (8C2) — 1.9 TD AAZ (1991–1994)
• SEAT Cordoba (6K1, 6K2) — 1.9 TD AAZ (1993–1996)
• SEAT Ibiza II (6K1) — 1.9 TD AAZ (1993–1996)
• SEAT Toledo I (1L2) — 1.9 TD AAZ (1991–1999)
• VW Golf III (1H1) — 1.9 TD / GTD AAZ (1991–1997)
• VW Golf III Van (1H1) — 1.9 D AAZ (1991–1995)
• VW Golf III Variant (1H5) — 1.9 TD AAZ (1993–1999)
• VW Passat B3/B4 (315, 3A5) — 1.9 TD AAZ Estate Van (1993–1996)
• VW Passat B3/B4 (3A2, 35I) — 1.9 TD AAZ Saloon (1991–1996)
• VW Passat B3/B4 Variant (3A5, 35I) — 1.9 TD AAZ Estate (1991–1997)
• VW Vento (1H2) — 1.9 TD AAZ (1991–1998)
• Other models where the AAZ engine has been fitted (confirm via OEM number)

Why Buy This AAZ Head From Us

• Brand new casting — never reconditioned, never welded, never resurfaced from a used head
• Pressure-tested and vacuum-tested before dispatch
• Flatness checked to OEM tolerance — no surprises when you torque it down
• Pre-chambers installed and sealing-checked
• 8 valves, hydraulic lifters and camshaft already fitted — hours of bench time saved per job
• 12-month warranty for trade and retail customers
• Crated for international freight; shipping to port or door

If you are sourcing a 1.9 TD cylinder head for an Audi 80, Golf III, Passat B3/B4, Vento, Ibiza, Cordoba or Toledo rebuild, or you need an AAZ head assembly in volume for a workshop or parts distributor, this unit gives the engine a factory-fresh top end. Message us with your OEM number before ordering and we will confirm the casting against your original head.

Browse More VAG Cylinder Heads & Contact Us

• Full range: View our complete VAG cylinder head catalog.
• Fitment check: Send us your engine code and a photo of your original head on WhatsApp for a same-day compatibility confirmation and freight quote.