Introduction
Bare Cylinder Head Product NO.
ML NO. OEM NO. REF NO. MLG034A 03L103265DX 908725 MLG034B 03L103351C 908726 MLG034C 03L103351D 908727 MLG034D 03L103351K 908050 MLG034E 03L103351B 908701 MLG034F 03L103265K 908728 MLG034G 03L103351 908700 MLG034H 03L103064 908729
Compatible OEM Numbers 03L103351F
03L103351H
03L103351P
03L103265
03L103063M
These part numbers refer to complete cylinder heads or cylinder head castings for 1.6 and 2.0-liter TDI engines under the EA189 diesel engine family, used in multiple Volkswagen Group vehicles.
Product Description This fully assembled cylinder head is a premium replacement solution for Volkswagen Audi Group’s EA189 1.6L and 2.0L TDI diesel engines . Engineered to OEM specifications and pre-installed with all major valvetrain components, the assembly ensures seamless integration, reduced labor cost, and optimal engine performance.
Commonly installed in VW Golf, Passat, Jetta, Touran, Audi A3, A4, SEAT Leon, Skoda Octavia , and more.
Technical Specifications Item Specification Engine Family VW EA189 Engine Codes CAYC, CAYB, CAYA, CFFD, CFFB, CFHC, CFHA, CLCA, CBAB, CBAA, etc. Displacement 1.6L (1598cc) / 2.0L (1968cc) Valvetrain DOHC – 16 valves Fuel Type Diesel Fuel System Common Rail Turbocharged Yes Cooling Water-cooled Head Material Aluminum Alloy Camshaft Drive Timing belt or gear (varies by model) EGR Compatibility Yes (EGR variants applicable) Emission Compliance Euro 4 / Euro 5 (EA189 platform)
What’s Included (Pre-assembled Head Assembly) Cylinder head casting (machined aluminum)
Intake & exhaust valves
Valve springs, retainers, and keepers
Valve stem seals
Camshafts (intake and exhaust)
Camshaft bearings
Rocker arms / finger followers
Hydraulic lifters / tappets
Pre-installed valve guides and seats
All components are pre-assembled and pressure tested , ensuring no internal oil, fuel, or coolant leakage.
Required Parts for Installation (Not Included) Item Purpose Recommendation Cylinder Head Gasket Seals combustion chamber Must Replace Head Bolts Secure the cylinder head Must Replace (torque-to-yield) Valve Cover Gasket Seals top cover Replace Timing Belt or Chain Kit Drives camshafts Replace if worn Intake/Exhaust Gaskets Prevent air/gas leakage Replace EGR Gasket / Cooler Seal Required for EGR-equipped engines Replace Fuel Injector Seals Reinstall injectors properly Replace Coolant / Oil & Filters After rebuild or head swap Required
Compatible Vehicle Models This cylinder head assembly fits a wide range of VW Audi Group vehicles:
Volkswagen
Golf Mk6 1.6 / 2.0 TDI
Jetta 1.6 / 2.0 TDI
Passat B6/B7 2.0 TDI
Touran, Caddy, Tiguan
Transporter T5 (2.0 TDI)
Audi
A1, A3, A4 1.6 / 2.0 TDI
Audi Q3 / Q5 2.0 TDI
SEAT
Skoda
Note : Always match by OEM number and engine code to ensure proper fitment.
Common Failure Issues Addressed Problem Root Cause Benefit of Replacement Cracked head Overheating, casting defects Precision-cast, pressure-tested Valve leakage High mileage wear New valves and seals installed Tappet or lifter noise Oil starvation or component fatigue New hydraulic lifters included Camshaft wear Oil starvation or misalignment Includes new camshafts Coolant-oil mixing Cracked oil/coolant passages Sealed, tested oil & water jackets
Target Markets Widely distributed to:
EU: Germany, Poland, Romania, Czech Republic
Middle East: Iran, Turkey, UAE
South America: Chile, Colombia, Peru
North Africa: Algeria, Egypt, Morocco
Eastern Europe: Ukraine, Serbia, Bulgaria
Used by:
