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Description

BMW E36 6-cylinder (92-99) Mishimoto aluminium coolant expansion tank

The Mishimoto expansion tank E36 replaces the plastic coolant reservoir of the six-cylinder BMW E36 from 1992 to 1999. After years of heating up and cooling down, the original tank becomes brittle and is a known weak spot of the BMW cooling system. This tank is full aluminium and TIG-welded.

A CNC-machined dipstick, which doubles as a bleeder, lets you read the cold coolant level accurately. The included 1.3 bar high-pressure radiator cap raises the boiling point of the coolant. You choose between polished aluminium and anodised black.

Key benefits

• Direct fit in the six-cylinder BMW E36 (1992-1999)
• Full aluminium and TIG-welded, built for repeated hot and cold cycles
• CNC-machined dipstick for the correct coolant level
• 1.3 bar high-pressure radiator cap included
• Installs in under an hour, rated easy by Mishimoto
• Fits the original fan shroud and the Mishimoto E36 fan shroud
• Polished or anodised black
• Mishimoto Lifetime Warranty

Suitable for

BMW 3 Series E36 with six-cylinder engine

• E36 325i and 325is (1992-1997), 323i and 323is (1997-1999), 328i and 328is (1996-1999)
• E36 M3 (1995-1999)
• Engine codes according to Mishimoto: M20B25, M50TU, M52, S52
• Not suitable for four-cylinder models

Technical specifications

• Manufacturer: Mishimoto
• Part numbers: MMRT-E36-92E (polished), MMRT-E36-92EBK (black)
• Material: aluminium, TIG-welded
• Finish: polished or anodised black
• Radiator cap: 1.3 bar
• Hose clamp torque: 2.5 Nm recommended, 3 Nm maximum
• Included: aluminium expansion tank, CNC-machined dipstick, Mishimoto radiator cap, overflow hose, hose clamp

Installation and delivery

The expansion tank goes in the location of the original reservoir. Mishimoto rates the installation as easy, allow less than an hour. Tighten the hose clamps to 2.5 Nm and never beyond 3 Nm. After a few hot and cold cycles, check the cold coolant level with the dipstick, and never remove the dipstick while the coolant is hot. The installation guide is available below. Lead time: 4 to 7 days.

Goodbye brittle plastic reservoir: a TIG-welded aluminium tank with dipstick that lasts as long as your E36.

Why choose this Mishimoto expansion tank E36?

A cracked expansion tank is a classic E36 failure that can stop your car at any moment, especially on track. This aluminium tank solves that for good, with a dipstick that makes level checks easy and a 1.3 bar cap that better protects the system. Mishimoto backs it with a lifetime warranty, and in polished or black it also tidies up the engine bay.

Frequently asked questions

Does this tank fit a four-cylinder E36?

No. According to Mishimoto, the Mishimoto expansion tank E36 does not fit models with a four-cylinder engine.

Does the tank fit my original fan shroud?

Yes. Mishimoto states that the tank fits the original fan shroud as well as the Mishimoto performance fan shroud for the E36.

Can I remove the dipstick when the engine is hot?

No. Always wait until the coolant is cold before removing the dipstick.

What is the lead time?

The lead time is 4 to 7 days.

Downloads and documentation

Installation guide Mishimoto expansion tank (PDF, English)

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.