Description
Engineered by Schaeffler Group as an original equipment (OE) benchmark, the INA Engine Valve Roller Rocker Arm for Audi provides low-friction, high-durability motion transfer between the camshaft and valve stems. Designed specifically for Audi’s advanced TFSI turbocharged gasoline and TDI diesel engines, this precision roller rocker arm replaces traditional sliding friction with a high-load needle bearing roller assembly. By maintaining continuous contact with the cam profile while minimizing rotational drag, it optimizes valve lift accuracy, reduces valvetrain energy losses, and eliminates valvetrain chatter. Constructed from cold-formed micro-alloy steel or heat-treated forged alloys, each INA rocker arm is built to withstand extreme valve spring tension and high-RPM thermal stresses. It is an essential OE-grade replacement part for engine rebuilders, machine shops, and automotive specialists aiming to restore factory quietness, fuel efficiency, and dynamic performance in Audi vehicles.
Technical Parameters
| Category | Specifications & Technical Details |
| Precision Needle Roller Bearing & Ultra-Low Friction Drag | A high-precision needle roller bearing is integrated at the contact point between the rocker arm and camshaft lobe, converting the original sliding friction into extremely low-resistance rolling friction. Friction loss is reduced by up to 60%–80%, greatly minimizing camshaft lobe wear and enabling faster valve response at high engine RPM. |
| Cold-Formed / Forged Steel Body with High Fatigue Strength | The rocker arm body is manufactured from micro-alloy steel through precision cold-forming or hot forging processes, featuring an extremely compact structure and high rigidity. After heat treatment and carburizing-quenching, it withstands the continuous impact and alternating stress generated by valve springs at high RPM in Audi TFSI turbocharged engines, preventing rocker arm deformation or fracture. |
| Ra ≤ 0.2 μm Precision Contact Surfaces | The hydraulic lifter support ball socket at both ends of the rocker arm and the valve stem pad contact surface both undergo micron-level super-finishing, achieving surface roughness of Ra ≤ 0.2 μm. This design ensures oil pressure forms a uniform oil film, preventing valve stem tip dimpling or wear caused by concentrated stress. |
| Integrated Directional Oil Supply Channel | Precision directional oil feed channels are machined inside the rocker arm, utilizing high-pressure oil delivered through the hydraulic lifter to continuously spray-lubricate and cool the internal needle roller bearing and cam contact surface, preventing bearing burning or seizure under high oil temperature and high-load conditions. |
| Hardened Bearing Pin & Anti-Displacement Lock Mechanism | The center pin supporting the roller undergoes high-frequency induction hardening, with high-strength riveting applied at both ends to prevent pin loosening or needle roller detachment under prolonged high-frequency vibration (a common fatal failure in high-mileage OEM Audi rocker arms). |
Applicable Car Brands & Models
Common symptoms of a failing rocker arm in Audi engines include:
Ticking or Clicking Noise from Valve Cover: Metallic chatter caused by worn roller bearings, excessive play, or collapsed hydraulic lifters.
Misfires & Engine Fault Codes: P0300 through P0304 error codes accompanied by power loss, caused by improper valve lift timing when a rocker arm roller gets stuck.
Metal Shavings in Oil Pan: Needle bearings disintegrating from the rocker arm roller pin and dropping into the oil system.
While single-rocker replacement is physically possible, replacing the entire set (along with hydraulic lifters) is highly recommended for Audi engines. If one rocker arm has failed due to wear or oil starvation, the remaining rocker arms have endured the same operating stress and are likely near the end of their service life. Replacing them as a set prevents repeated labor costs.
Yes. Schaeffler (INA) is a Tier-1 Original Equipment Manufacturer (OEM) for Audi and the Volkswagen Group. INA roller rocker arms are manufactured to the exact same metallurgy, engineering tolerances, and quality control standards as the parts supplied directly to the Audi assembly line.
Each INA Roller Rocker Arm is treated with rust-preventative VCI oil and sealed in protective plastic packaging. For B2B export orders, they are packaged in original INA unit boxes and packed into sturdy master cartons (often in sets of 8, 12, 16, or 24 depending on engine cylinder count) with full palletizing options for international freight.
