Expansion Tank Cap - BMW 1/3/5 Series / X3 / X5 / Z4 (many models check fitment)Guaranteed fitment precision molded to OE cap dimensions to ensure compatibility with original and aftermarket coolant recovery tanks. Quality cap and seal materials resist engine heat and harsh cooling system environment factory pressure tested. Part #'s17 11 7 639 020 17 11 7 639 020 1711763902017 11 7 521 071 17 11 7 521 071 17117521071

High temperature fade resistance

Full carbon fiber construction ensures this piece will stand the test of time by offering up unparalleled strength and rigidity

Hose includes check valve

8T with 272mm rear rotors

This part has the 4-Pin SQUARE electrical connector

The ContiTech Water Pump Drive Belt meets or exceeds the vehicle manufacturer’s specifications for durability

MADE-TO-ORDER part

Lowers approx 1

5 & up models

• Aeromotive Stealth 340

Capristo Mercedes-AMG C63 (WSC204) Installation Manual

Unitronic Engineers validated designs to ensure that this Unitronic Intake System performed better than the OEM unit with its in-house Superflow SF-1020 Flow Bench in a variety of different conditions