NTN HAT110-3G+NEP28.#01 Hydraulic Timing Belt Tensioner Assembly with Damper

The NTN HAT110-3G+NEP28.#01 is a precision-engineered hydraulic timing belt tensioner assembly that combines an automatic tensioner with an integrated damper and relay roller. This OEM-quality component is designed to maintain optimal timing belt tension throughout the engine's operating range, compensating for belt elongation and temperature-related expansion.

Key Features:

• Hydraulic damping system with check valve and plunger assembly for smooth tension control
• Integrated relay roller and damper assembly for complete timing system support
• Return spring mechanism automatically adjusts pulley position to maintain constant belt tension
• Prevents timing belt flapping and excessive tension under varying operating conditions
• Manufactured by NTN, a leading Japanese bearing and timing component manufacturer
• Direct replacement for VW OEM part number 06B-109-477-A

The hydraulic tensioner design provides superior performance compared to fixed tensioners by automatically compensating for belt wear and thermal expansion. The internal check valve and hydraulic damper work together to support belt loads when tension increases, while the return spring extends the rod to maintain contact when the belt loosens. This ensures precise engine timing and extends timing belt service life.