Rein Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58 171386106612

Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58

Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability.
Rein Rein
T#: 55965843 | Part#: 171386106612
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47.49
SALE: $47.49 (5% OFF)
WAS: $49.99 on 08-31-2026

This product was last offered at the strikethrough price on
08-31-2026

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Rein Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58 171386106612
Rein Coolant Expansion Tank - F97 F98 G01 G02 G05 G06 G07 - S58 B46 B58
$47.49

Keep your ultimate driving machine cool under pressure with this replacement auxiliary expansion tank from Rein. On modern turbocharged BMWs, the secondary cooling system plays a critical role in managing intake charge air temperatures, making a solid reservoir vital for both spirited street driving and track day reliability. This unit swaps directly into place of your fatigued or weeping factory plastic tank, utilizing factory-style hose bungs to ensure a leak-free seal with your existing lines. It's an essential maintenance update to keep your cooling system sealed tight and your power delivery consistent when pushing your chassis to the limit.

Features:

  • Designed to meet precise OEM fitment standards for a quick, hassle-free installation

  • Ensures reliable fluid containment for the dedicated intake charge air cooler system

  • Retains compatibility with original equipment cooling hoses and mounting hardware

  • Provides robust resistance against continuous pressure and heat degradation


Prop 65 WarningProp 65 Warning

Cross Reference
  • 17138610661
  • EPT0277

Product Q&A

Lifetime Replacement

This product is not eligible for Lifetime Replacement
MAKE MODEL SUBMODEL ENGINE Special Fitment Notes
BMW F97 X3 M S58 3.0L Use vehicle selector to confirm fitment
BMW F98 X4 M S58 3.0L Use vehicle selector to confirm fitment
BMW G01 X3 M40i B58 3.0L Use vehicle selector to confirm fitment
BMW G01 X3 sDrive30i B46 2.0L Use vehicle selector to confirm fitment
BMW G01 X3 xDrive30i B46 2.0L Use vehicle selector to confirm fitment
BMW G02 X4 M40i B58 3.0L Use vehicle selector to confirm fitment
BMW G02 X4 xDrive30i B46 2.0L Use vehicle selector to confirm fitment
BMW G05 X5 sDrive40i B58 3.0L Use vehicle selector to confirm fitment
BMW G05 X5 xDrive40i B58 3.0L Use vehicle selector to confirm fitment
BMW G06 X6 sDrive40i B58 3.0L Use vehicle selector to confirm fitment
BMW G06 X6 xDrive40i B58 3.0L Use vehicle selector to confirm fitment
BMW G07 X7 xDrive40i B58 3.0L Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.