Castrol Fluids for BMW E21 320i M10 1.8L

Clear BMW chassis

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If you're looking for BMW engine oil, brake fluid, transmission and diff fluid, power steering fluid, or coolant, this is the place. We also stock a variety of additives that we have seen benefits from.
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Castrol React SRF Racing - 1 Liter
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Castrol - Corporate Logo
T#:809
Part#: SRF
In Stock
$ 118.02

This product was last offered at the strikethrough price on
01-08-2026

$ 94.99 USD
Free Shipping
$ 94.99 USD
Free Shipping
Silicone based synthetic DOT 4 brake fluid.
Boiling Point - Dry: 608 Degrees Fahrenheit / Wet: 518 Degrees Fahrenheit
Widely used in many types of racing including Formula One, V8 Supercar, and Superbike.
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