Rein Cylinder Block Components

Rein Automotive: The True Dealer Alternative

Rein Automotive is a brand built on a single, powerful promise: parts that match or exceed original equipment quality without the dealership price tag. Introduced to the North American market in 2007 under the CRP Automotive family of brands, Rein takes its name from the German word for "pure" — a fitting identity for a line engineered to meet factory specifications down to the last fitting and bend. Since its debut, the brand has earned a strong following among professional repair technicians and serious DIYers who work on European and Asian import vehicles.

Engineering Backed by Real-World Technician Feedback

What sets Rein apart isn't just OE-matching quality — it's a commitment to going beyond it. The brand maintains an Innovation Council, a hand-picked group of experienced professional technicians and shop owners across North America, who provide direct input on product development. This collaboration has given rise to Rein's "Better Than OE" upgrade parts: components that identify known factory weaknesses and address them head-on. For example, certain coolant hose connectors that were originally molded in brittle thermoplastic are redesigned with durable aluminum construction, reducing the risk of cracks and leaks caused by thermal cycling. Rein has also won multiple new product innovation awards at the AAPEX trade show, reflecting its ongoing investment in solving real repair problems.

A Comprehensive Catalog for Import Vehicles

The Rein catalog spans thousands of parts across cooling systems, steering, engine mounting, and more — making it a go-to source for maintaining popular European nameplates like BMW, Audi, Mercedes-Benz, Volkswagen, and Volvo, as well as Asian brands including Toyota, Honda, and Subaru. The breadth of coverage means technicians can often source multiple components for the same job from a single trusted brand.

At the heart of the Rein lineup is an extensive hose program. Radiator coolant hoses are precision-molded to replicate the exact bends, branch configurations, and connector fittings of the original equipment — including select upgrade versions that swap out plastic connectors for metal alternatives. The brand's engine coolant hoses follow the same philosophy, with some assemblies supplied as complete kits with pre-installed temperature switches to streamline the installation process.

For vehicles equipped with hydraulic steering, Rein offers both power steering hoses and power steering lines engineered to deliver the correct pressure ratings, fittings, and routing geometry for each specific application. These components must withstand constant pressure cycling and exposure to hydraulic fluid, and Rein's OE-partnered manufacturing ensures they hold up to those demands.

Rein's anti-vibration program is equally well-regarded. The brand's engine mounts — including hydraulic versions — are designed to maintain proper powertrain positioning and absorb vibration to acceptable NVH levels, helping protect surrounding drivetrain components from accelerated wear.

Why Technicians Trust Rein

• OE-matching form, fit, and function verified against factory specifications
• "Better Than OE" upgrades that correct known factory design weaknesses
• Broad application coverage for European and Asian import vehicles
• ISO-certified manufacturing standards
• Product development shaped by an active technician Innovation Council
• Multiple AAPEX trade show innovation award recipient