VW Mk4 Parts & Golf Diagram Catalogue - Performance Upgrade

When bulk purchasing VW Mk4 parts, paying attention to model years and part compatibility is essential, as the Mk4 (1997–2006) includes variations in Golf, Jetta/Bora, and Beetle models. Here are key considerations:

Yearly Variations

• 1997–1999 (Early Mk4): Early models may have different engine control modules (ECU), sensors, and suspension components compared to later versions.
• 2000–2004 (Mid Mk4): Updated electrical systems and transmission options are common during this period.
• 2005–2006 (Late Mk4): Some regions (e.g., Latin America, China) continued producing Mk4 with minor updates, such as revised designs or components.

VW Mk4 Parts - Engine Differences

• Gasoline Engines: Includes 1.4L, 1.6L, 1.8T (turbocharged), 2.0L, and VR6 (2.8L, 3.2L). Parts like turbochargers, spark plugs, and intake systems vary significantly by engine.
• Diesel Engines (TDI): The 1.9L TDI comes in multiple versions (90hp, 110hp, 130hp, PD150), with differing fuel pumps, injectors, and turbochargers.

Drivetrain and Suspension Configurations

• FWD vs. 4MOTION AWD: Components like driveshafts, differentials, and suspension parts are not interchangeable between these systems.
• Suspension Systems: GTI and VR6 models have stiffer sport suspensions compared to standard Golf models.

Key Part Compatibility Notes

• Brake Systems: GTI, VR6, and R32 models use larger brake discs that are incompatible with standard Golf versions.

To avoid issues, create a detailed list of model years and verify parts using Aftermarket part numbers for compatibility.