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  • Gates Engine Coolant Replacement Radiator Cap for Audi A4 - 31529
    $7.39
    Product Specifications
    • Cap Depth: 0.66 in
    • Coolant Recovery System: Closed System
    • Filler Neck Depth: 0.66 in
    • Filler Neck Inside Diameter: 2.18 in
    • Filler Neck Outside Diameter: 63 mm
    • OE Comparison Rating: OE Performance
    • Pressure Rating: 22 psi
    • SAE Pressure Range: 18-22 psi
    • Shell Diameter: 3.14 in
    • UPC: 072053608540
    • Part Description: Audi A4 Engine Coolant Replacement Radiator Cap
    More Info
  • STANT Engine Coolant Radiator Cap for Audi A4 - 10225
    Product Specifications
    • Cap Depth: 1"
    • Filler Neck Outside Diameter: 1.78"
    • OE Part Number: 171121321D, 171121321, 171121321C, 443121321, 171121321J
    • Pressure: 20 psi
    • Shell Diameter: 2.27"
    • Type: Closed System
    • UPC: 033342001251
    • Part Description: Audi A4 Engine Coolant Radiator Cap
    More Info

About Audi A4 Radiator Cap

The first-generation Audi A4 made its debut in October 1994. Audi A4 provides great radiator cap parts for car buyers. The radiator cap parts prevent a lot of damage to the radiator hoses as well as the tank. Any kind of damage to those components can cause them to collapse. Audi A4's faulty radiator cap parts can lead to leaking coolant, overheating of the engine, and a collapsed radiator hose(s).
Audi A4 is well-known for lots of high-quality parts. However, Audi A4's old radiator cap parts might lead to poor functions and bad driving experiences after years of usage. The removal process of the Audi A4's radiator cap is as follows. Disconnect the negative battery terminal first. Next, allow the radiator to cool down before attempting any removal. And then twist the cap counterclockwise to remove the radiator cap. The most common radiator cap pressures include 16 PSI, 15 PSI, 13 PSI, and 10 PSI. Get helpful parts at a low price with just a few clicks online. We offer fast delivery for you.