INA Manual Transmission Components

INA: German-Engineered Precision for Engine Timing & Drive Systems

INA is the automotive parts brand of the Schaeffler Group, a German multinational manufacturer founded in 1946 by brothers Dr. Wilhelm Schaeffler and Dr. Georg Schaeffler. Headquartered in Herzogenaurach, Bavaria, Schaeffler has grown into one of the world's leading suppliers of high-precision components for the automotive and industrial sectors. For decades, INA parts have been specified by European automakers as original equipment — meaning there's a strong chance INA components were installed in your vehicle from the factory.

INA's engineering philosophy centers on tight tolerances, long service life, and exact OEM fitment. This makes INA a go-to choice for technicians and enthusiasts who want a repair done right the first time, without compromise. The brand's expertise spans the full spectrum of engine timing and drive systems — the critical mechanisms that keep your engine's valvetrain synchronized and your accessory belt system running smoothly.

Timing Chain & Belt Systems

At the heart of INA's automotive lineup are its engine timing chain kits and engine timing belt kits. The timing drive is one of the most demanding environments inside any engine — it must maintain precise camshaft-to-crankshaft synchronization under high heat and continuous load. INA's timing chain kits include all the components needed for a complete, confidence-inspiring repair: chains, tensioners, guides, and sprockets engineered to work as an integrated system. For belt-driven engines, INA timing belt kits deliver the same comprehensive approach, ensuring every wear item is replaced at once.

Water Pumps & Coolant Flow

INA also manufactures engine water pumps, frequently bundled with timing belt components since both share a common service interval on many European vehicles. Replacing the water pump at the same time as the timing belt is considered best practice, and INA's integrated kits are designed specifically with this in mind — simplifying the job and reducing the risk of a cooling system failure shortly after a timing service.

Drive Belt Tensioners & Belt Kits

Proper accessory belt tension is essential for reliable operation of the alternator, power steering pump, and air conditioning compressor. INA's drive belt tensioners are engineered to exact OEM specifications, providing consistent belt tension across the full operating temperature range. For a complete accessory drive service, INA also offers drive belt kits that pair tensioners with the other components needed for a thorough replacement — all sourced from the same manufacturer that supplied the original parts.

Why Choose INA?

• OEM Pedigree: INA parts are original equipment on many European vehicles from Audi, BMW, Mercedes-Benz, Volkswagen, and more.
• Complete Kits: INA packages timing and belt components as integrated systems, eliminating mix-and-match compatibility concerns.
• Precision Manufacturing: Built to the same exacting standards as the parts that left the assembly line, with tight tolerances for exact fitment.
• Broad Coverage: With nearly 3,000 part numbers, INA covers a wide range of European and domestic applications.