Repair Kit 5NA 998 226

Perform a complete, factory-approved repair with the genuine repair kit (part 5NA 998 226). This comprehensive service kit contains all the essential seals, gaskets and O-rings needed to restore proper sealing and function to VAG components, ensuring leak-free operation and long-term reliability.

Key Benefits

• Complete OEM Coverage
  Includes every seal and gasket specified by Volkswagen Group for the targeted repair—no missing parts or aftermarket substitutions.

• Exact Fit & Finish
  Molded and stamped to factory tolerances for perfect mating with original housings and flanges—no trimming or adaptation required.

• Premium Materials
  Combines heat-resistant elastomers, corrosion-proof metals and high-grade plastics to withstand oil, coolant and fuel exposure without degradation.

• Leak-Proof Performance
  Precision profiles ensure uniform compression and contact pressure, preventing fluid seepage and preserving system integrity.

• Extended Service Life
  OEM-formulated compounds resist hardening, cracking and extrusion, reducing the need for repeat maintenance.

Kit Contents

• Multiple O-rings in various diameters

• Profiled flat gaskets for housings and covers

• Bonded seals for shaft and bearing interfaces

• Specialty gasket material for high-pressure joints

(Exact item count and dimensions vary by component application; refer to service manual for full list.)

Typical Applications

• Oil cooler housing reseal

• Thermostat cover service

• Fuel flange maintenance

• Hydraulic pump rebuild

• Differential or transfer-case cover overhaul

Installation Overview

1. Disassemble Component: Drain fluids and remove the housing or cover according to factory procedure.

2. Clean Mating Surfaces: Scrape off old gasket material and inspect sealing faces for damage.

3. Select Seals: Match each kit seal and gasket to its corresponding groove or flange.

4. Install New Seals: Position O-rings in bores, lay flat gaskets on clean surfaces, and press bonded seals into place.

5. Reassemble & Torque: Reattach the housing or cover, tightening bolts in the specified sequence to factory torque values.

6. Test for Leaks: Refill fluids, run the system, and inspect all joints for proper sealing.