Esta culata está diseñada para el early VW diesel engine family (pre-TDI), including the 1.6L and 1.9L indirect injection (IDI) engines. These engines are SOHC, 8-valve, y naturally aspirated or turbocharged, but not direct injection. Known for their simplicity and reliability, they were widely used in Volkswagen Group vehicles throughout the 1980s–2000s in Europe and global export markets.
2. Especificaciones técnicas
Códigos de motor
1Y, AAZ, ABL, AEF, 1X
Desplazamiento
1.6L (AEF) / 1.9L (1Y, AAZ, ABL, 1X)
Tren de válvulas
SOHC, 8 valves (2 valves per cylinder)
Tipo de culata
Indirect Injection (pre-TDI)
Tipo de combustible
Diesel
Aspiración
NA (1Y, 1X, AEF) / Turbocharged (AAZ, ABL)
Sistema de enfriamiento
refrigerado por agua
Momento
Belt-driven camshaft
Material de la culata
Aleación de aluminio fundido
3. Aplicaciones de vehículos compatibles
Hacer
Modelo
Años
Volkswagen
Golf Mk2 / Mk3, Jetta, Passat, Caddy
1989–1999
Asiento
Ibiza, Cordoba, Toledo
1993–1999
Skoda
Felicia 1.9D
1995–2001
VW Transporter
T4 1.9D (AAZ/ABL)
1991–2003
4. OEM Part Numbers (Selection)
Número de pieza
Descripción
028103373A
Cylinder head (1Y, AAZ, 1X)
028103351E
Assembled head with valves
028103373F / D
Updated casting versions
030103351A
For AEF 1.6D
OEM numbers vary depending on turbo/non-turbo and EGR configuration.
5. Common Issues & Maintenance Notes
Problema común
Causa
Solución
Cracked pre-combustion chamber
Overheating or injector failure
Replace prechambers or head
Deformación de la cabeza
Falla del sistema de enfriamiento
Revestir o reemplazar
Desgaste de la guía de válvulas
Alto kilometraje
Replace guides/seals
Daño en la rosca de la bujía incandescente
Improper installation
Repair threads or replace head
6. Consejos de instalación
Usar new stretch bolts y Junta de culata MLS
Verificar pre-combustion chamber seating (especially on AAZ/1Y)
Asegurar coolant system is properly flushed to prevent cracks
Use correct secuencia de par y timing alignment
On turbo models (AAZ/ABL), check oil feed and return lines
7. Export & Market Demand
Región
Key Factors
Europa Oriental
Widespread use in older VW/Skoda – high rebuild demand
África del Norte
Common in imported Golf/Caddy – affordable diesel head
Oriente Medio
Utility vehicles in Iraq, Jordan, Lebanon
Sudamerica
Brazil, Argentina – used in rural/agricultural vehicles
Sub-Saharan Africa
High demand for durable, non-TDI diesel heads
8. Product Features
Precisión CNC-machined valve seats and guides
Disponible como desnudo, semi-finished, o completamente ensamblado
100% pressure and crack tested
Soportes IDI injection nozzles y cámaras de precombustión
Compatible con original turbo manifolds and EGR setups