Radiator / Expansion Tank Cap – For BMW E30 318 M20/M42 | 1.4 bar
Radiator / Expansion Tank Cap – For BMW E30 318 M20/M42 | 1.4 bar
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Radiator / Expansion Tank Cap – For BMW E30 318 M20/M42 | 1.4 bar
Replace your worn or missing BMW E30 radiator or expansion tank cap with this brand-new, OEM-compatible 1.4 bar cap. Designed for reliable pressure regulation, it helps maintain optimal cooling system performance for M20 and M42 engines.
Key Features
OEM-Style Fitment – Direct replacement for E30 318 M20 and M42 radiators and expansion tanks.
Reliable Pressure Rating – 1.4 bar cap maintains correct cooling system pressure.
Durable Construction – Long-lasting material resists wear and prevents leaks.
Specifications
Type: Radiator / Expansion Tank Cap
Pressure: 1.4 bar
BMW Part Number: 17 13 7 639 023 / 17137639023
Fitment: E30 318i / 318is with M20 or M42 engines
Important Note
Always replace the radiator cap if missing, cracked, or showing signs of wear to ensure proper cooling system function.
