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This product was last offered at the strikethrough price on
10-28-2026
This product was last offered at the strikethrough price on
10-28-2026
This product was last offered at the strikethrough price on
05-14-2026
This product was last offered at the strikethrough price on
05-14-2026
This product was last offered at the strikethrough price on
08-13-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
05-14-2026
This product was last offered at the strikethrough price on
10-11-2026
This product was last offered at the strikethrough price on
10-11-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-04-2026
This product was last offered at the strikethrough price on
08-04-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-15-2026
This product was last offered at the strikethrough price on
10-28-2026
This product was last offered at the strikethrough price on
10-28-2026
This product was last offered at the strikethrough price on
10-15-2026
On SMG-equipped E46 M3s, the SMG fluid reservoir is integrated into the airbox assembly. As a result, upgrading to a CSL-style carbon fiber airbox requires a standalone expansion tank. While the Genuine BMW CSL SMG Expansion Tank is still available, it’s often difficult to source, and its weak plastic construction makes it prone to eventual failure.
With this in mind, our team of BMW enthusiasts went to work, designing a heavy-duty aluminum replacement that is built to last! Constructed from TIG-welded 5052/6061 aluminum and finished in a durable wrinkle black powder coat, this tank looks as good as it performs.
We've carefully crafted every detail of this expansion tank for a clean, hassle-free fit. Unlike the OEM tank, which mounts to the strut tower with self-tapping screws, our design uses pre-existing fastener locations for a completely reversible install. A slotted upper bracket lets you rotate the tank into position with the CSL airbox installed, freeing up room when you need to fit the airbox snout first. Our proprietary SMG pump inlet and fluorosilicone hose provide a sleek connection to the SMG pump, routing easily around the airbox and surrounding mounts. In place of the OE dipstick, an internal Turner logo tag serves as a max fill indicator, the same easy-read design used on all Turner Motorsport sheet metal expansion tanks.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
07-15-2026
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
09-03-2026
This product was last offered at the strikethrough price on
10-28-2026
This product was last offered at the strikethrough price on
10-28-2026
Explore the Turner Motorsport Shell Transfer Case Fluid - 1 Liter, designed to meet the exacting standards of BMW xDrive systems, commonly found in X5 and X3 models. This Shell S-Tec OE spec fluid ensures optimal performance and protection for your BMW's transfer case. Changing this fluid in conjunction with transmission fluid every 50-60,000 miles brings several benefits, ensuring a smooth and reliable driving experience.
Maintain the performance of your BMW xDrive system with the Turner Motorsport Shell Transfer Case Fluid, an essential component for optimal functionality.
This product was last offered at the strikethrough price on
07-10-2026