Description

VAG 1.9 TDI AGR / ALH Complete Cylinder Head Assembly – Valves & Camshaft Pre-Installed

This VAG 1.9 TDI 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 and camshaft already fitted. For a workshop doing a 1.9 TDI 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

The 1.9 TDI VE engine is one of the most durable diesels ever built, but the head is where 200,000-plus mile wear shows up first:

• Cracking between the valve seats — the classic failure, usually after an overheating event or a coolant loss
• 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 sealing problems causing compression loss and hard cold starting

Once a 1.9 TDI head has been resurfaced past minimum thickness it cannot be reliably saved. 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
• Camshaft — SOHC, VE-pump 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, EGR valve and anti-shudder valve
• Exhaust manifold and turbocharger (Garrett GT15 / VNT15 depending on application)
• Vacuum pump, tandem pump where fitted, and sensors and wiring

Vehicle Compatibility

Fitted to a very wide range of VW Group models running the AGR or ALH 1.9 TDI engine. Always confirm your engine code and OEM number before ordering — the 1.9 TDI was built in VE-pump and PD forms with heads that are not interchangeable.

• VW Golf Mk4 — 1.9 TDI AGR / ALH (1997–2004)
• VW Bora / Jetta Mk4 — 1.9 TDI AGR / ALH (1998–2005)
• VW New Beetle — 1.9 TDI ALH (1998–2010)
• VW Passat B5 — 1.9 TDI AGR / ALH (1996–2000)
• VW Polo — 1.9 TDI select markets
• Audi A3 8L — 1.9 TDI AGR / ALH (1996–2003)
• Audi A4 B5 — 1.9 TDI AGR (1995–2001)
• Skoda Octavia Mk1 — 1.9 TDI AGR / ALH (1996–2010)
• SEAT Leon Mk1 / Toledo Mk2 / Ibiza — 1.9 TDI AGR / ALH
• Other models where the AGR / ALH engine has been fitted (confirm via OEM number)

Why Buy This 1.9 TDI 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
• Reinforced valve-seat and injector-bore areas to resist the thermal cracking these heads are known for
• 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 TDI cylinder head for a Golf Mk4, Bora, Octavia or Leon rebuild, or you need an AGR / ALH head assembly in volume for a workshop or fleet contract, 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.