Audi TT MK2, Audi A4 B8, V/W Passat B7, 8P 8J Engine Oil Cooler 06J117021J - Used Original Parts

Diagnosis and Common Symptoms

As a Senior Technician at M.S. Motor, I frequently see fluid cross-contamination issues on the VAG EA888 engine platform traced directly back to a failing engine oil cooler. Because this component sits flush against the block and manages high-pressure hot oil alongside engine coolant, internal gasket fatigue is a known weak point. The most definitive symptom is the "milky milkshake" consistency found in your coolant expansion tank, which indicates pressurized oil is breaching the coolant passages. Conversely, you may find coolant on your dipstick.

While this is a mechanical failure, it can trigger secondary dashboard warnings and fault codes. You will likely experience a low coolant level warning, an illuminated red oil pressure light, or an engine over-temp warning. Associated OBD2 fault codes often include P0218 (Engine Over Temperature Condition) or P0522 (Engine Oil Pressure Sensor Low Voltage) due to compromised fluid viscosity. External oil weeping down the front of the engine block directly beneath the intake manifold is another prime indicator that the cooler housing or its seals have warped under thermal stress.

Introduction

Welcome to M.S. Motor, where we prioritize authentic repairs over cheap aftermarket alternatives. When resolving critical fluid management issues on the 1.8T and 2.0T engines, installing a Genuine Used oil cooler ensures the metallurgical integrity required to withstand factory thermal cycles. This exact unit has been thoroughly cleaned, inspected, and pressure-tested to guarantee there are no internal fractures or blockages. By utilizing a tested Genuine part, you maintain optimal heat dissipation and safeguard your engine from catastrophic cross-contamination.

Product Details

• Brand: Genuine VW/Audi
• Model Compatibility: Audi TT MK2 (8J), Audi A4 B8, Audi A3 (8P), V/W Passat B7
• Part Name: Engine Oil Cooler
• Part Number: 06J117021J
• Condition: Genuine Used (Tested Working)
• Notes: Unit has been ultrasonically cleaned and pneumatically pressure-tested for internal breach prevention. We strongly advise performing a complete cooling system flush and replacing the mounting gaskets during installation to ensure a perfect seal.