Turbocharger 03L253014A 03L253014C 803955-0003 803955-0005 803955-5003S

The turbocharger is a critical component in modern diesel engines, enhancing performance, fuel efficiency, and emissions control. 

The 03L253014A, 03L253014C, 803955-0003, 803955-0005, and 803955-5003S are high-quality turbochargers designed for Volkswagen Crafter and Amarok 2.0 TDI engines. 

These turbochargers ensure optimal power delivery, reduced turbo lag, and improved engine responsiveness.

This article provides a detailed overview of these turbocharger models, their specifications, 

compatibility, benefits, and maintenance tips to ensure long-lasting performance.

1. Turbocharger Specifications & Features

Key Specifications:

• Part Numbers:

• 03L253014A

• 03L253014C

• 803955-0003

• 803955-0005

• 803955-5003S

• Engine Compatibility: Volkswagen Crafter & Amarok (2.0 TDI Diesel)

• Turbo Type: Variable Geometry Turbocharger (VGT)

• Housing Material: High-grade cast iron & aluminum alloy

• Bearing System: Journal bearing or ball bearing (depending on model)

• Maximum Boost Pressure: Varies by model (typically 1.2 – 2.0 bar)

• Actuator Type: Electronic or vacuum-controlled (model-dependent)

Key Features:

✔ Enhanced Performance: Delivers increased horsepower and torque while maintaining fuel efficiency.
✔ Durable Construction: High-quality materials resist heat and wear for extended lifespan.
✔ Precision Engineering: Optimized turbine and compressor wheel design for smooth airflow.
✔ Reduced Turbo Lag: Variable geometry ensures quick response at low and high RPMs.
✔ OEM & Aftermarket Options: Available as genuine OEM replacements or high-quality aftermarket alternatives.

2. Vehicle Compatibility

These turbochargers are specifically designed for:

Volkswagen Models:

• VW Crafter (2.0 TDI) – Years: 2006–2016 (depending on engine code)

• VW Amarok (2.0 TDI) – Years: 2010–Present

Engine Codes (Examples):

• CXHA, CXEA, CAAA, CFCA (varies by region and model year)

Note: Always verify the exact engine code and turbocharger part number before purchasing to ensure compatibility.

3. Benefits of Upgrading or Replacing Your Turbocharger

A failing turbocharger can lead to:

• Loss of power

• Excessive smoke from exhaust

• Whining or grinding noises

• Oil leaks

Installing a new or refurbished 03L253014A / 03L253014C / 803955 series turbocharger provides:

✅ Restored Engine Power – Regains lost performance and acceleration.
✅ Improved Fuel Economy – Efficient combustion reduces fuel consumption.
✅ Lower Emissions – Helps meet Euro 5/Euro 6 standards.
✅ Longer Engine Life – Prevents oil contamination and excessive backpressure.
✅ Warranty Protection – Many replacements come with a 1-2 year warranty.

4. Common Symptoms of a Failing Turbocharger

If you notice any of these signs, your turbo may need replacement:

⚠ Loss of Power (Boost Pressure Drop) – Engine struggles to accelerate.
⚠ Excessive Exhaust Smoke (Blue/Black Smoke) – Indicates oil burning or improper combustion.
⚠ Loud Whistling or Grinding Noise – Damaged bearings or compressor wheel.
⚠ Check Engine Light (Turbo-Related Fault Codes) – Common codes: P0299 (Underboost), P2263 (Turbo Performance).
⚠ Oil Leaks Around Turbo – Seals or gaskets may be failing.

5. Installation & Maintenance Tips

Installation Guidelines:

• Always inspect intercooler, pipes, and oil lines for leaks before installation.

• Replace gaskets, seals, and oil feed lines if worn.

• Prime the turbo with clean engine oil before starting the engine.

• Use proper torque specifications for bolts to avoid leaks.

Maintenance Tips to Extend Turbo Life:

✔ Use high-quality synthetic engine oil (5W-30 or 5W-40, VW 507.00 approved).
✔ Allow the engine to idle for 1-2 minutes before shutdown (cool-down period).
✔ Regularly check air filters and replace when clogged.
✔ Monitor boost pressure and address any leaks promptly.

6. OEM vs. Aftermarket Turbochargers

Recommendation: If budget allows, choose OEM (03L253014A/C) for guaranteed fitment. For cost savings, 

trusted aftermarket brands like Garrett, BorgWarner, or Melett offer reliable alternatives.

The 03L253014A, 03L253014C, 803955-0003, 803955-0005, and 803955-5003S turbochargers are essential for maintaining 

the performance of VW Crafter and Amarok 2.0 TDI engines. 

Whether replacing a faulty turbo or upgrading for better efficiency, selecting the right model ensures long-term reliability.

For optimal results, follow proper installation procedures, use recommended oils, and perform regular maintenance. 

If in doubt, consult a professional mechanic to ensure correct fitment and operation.