BMW Coolant Preassure Tester

Coolant preassure tester that replaces cap on expansion tank. 

Printed with TPU and uses normal automotive valve.

Used for finding leaks on BMW engines. On cold engine replace expansion tank cap with this adapter. Tighten it so that it seals. Then use any tipe of pump to preassurize the system and look for leaks. ( MAX 1.4 BARS !!!) or never exceed preassure written on your cap.

Valve is press fitted from inside. It requires a lot of force so use some kind of cylindrical object and press with both hands as in photo:

Fits these engines:

Naturally Aspirated Petrol Engines

• N52 / N52K / N52T: 2.5L and 3.0L Inline-6 (e.g., E90/E91 325i, 328i, 330i, E60 528i)
• N53: 2.5L and 3.0L Direct-injection Inline-6 (European markets)

Turbocharged Inline-4 Petrol Engines

• N20 / N26: 2.0L TwinPower Turbo (e.g., F30 320i/328i, F10 528i)
• B46 / B48: 2.0L Modular Inline-4 (e.g., F30 LCI 330i, G30 530i)

Turbocharged Inline-6 Petrol Engines

• N54: 3.0L Twin-Turbo Inline-6 (e.g., Early E90 335i, E82 135i, 1M)
• N55: 3.0L TwinPower Turbo Inline-6 (e.g., Late E90/F30 335i, F22 M235i, F87 M2)
• B58: 3.0L Modular TwinPower Turbo Inline-6 (e.g., F30 340i, G30 540i, G01 X3 M40i)
• S55: 3.0L High-Performance Twin-Turbo Inline-6 (e.g., F87 M2 Competition)

Turbocharged V8 & V12 Petrol Engines

• N63 / S63: 4.4L Twin-Turbo V8 (Found in 550i, 650i, 750i, X5/X6 50i, and M models)
• N74: 6.0L / 6.6L Twin-Turbo V12 (Found in the 760i/760Li)

Diesel Engines

• N47 / B47: 2.0L Inline-4 Turbo Diesel (e.g., 328d)
• M57: 3.0L Inline-6 Turbo Diesel (specifically later variants, like the E90 335d or E70 X5 xDrive35d)
• N57 / B57: 3.0L Inline-6 Turbo/Twin-Turbo Diesel (e.g., F10 535d)

Hybrid Powerplants

• N20 / B48 Hybrid Systems: (e.g., F30 ActiveHybrid 3, F30 330e, G30 530e—often used specifically on either the main or the secondary low-temperature intercooler circuit).

Or any engine that uses this expansion tank cap: 17 11 7 639 020