058 109 088K – Camshaft Chain Tensioner

Description

The 058 109 088K camshaft chain tensioner is an essential timing component for select Audi and Volkswagen engines, including the popular 1.8T and 2.7T platforms. This electronic hydraulic tensioner manages the slack in the timing chain that synchronizes the intake and exhaust camshafts. By maintaining precise chain tension, the 058 109 088K camshaft chain tensioner supports accurate valve timing and smooth engine operation across the RPM range.

Internal wear or loss of oil pressure within the unit can cause the timing chain to become loose. Replacing a failing tensioner is a critical preventative measure to avoid incorrect cam-to-cam timing, which can lead to catastrophic internal engine damage if the valves contact the pistons.

Signs Your Camshaft Chain Tensioner Needs Replacing

Identify potential timing issues before they lead to failure by monitoring for these symptoms:

• A “diesel-like” rattling noise coming from the rear of the valve cover (especially at idle).

• Check Engine Light (CEL) with fault codes related to camshaft position or timing over-retarded/advanced.

• Rough engine idle or persistent misfires.

• Decreased engine performance and throttle response.

• Significant oil leaks around the tensioner gasket or solenoid connector.

Key Features

• OE Part Number: 058 109 088K

• Type: Electronic Hydraulic Tensioner (VVT Compatible).

• Application: Optimized for 1.8L 20V Turbo and 2.7L Biturbo engines.

• Precision Engineering: Manufactured to exact tolerances for reliable hydraulic response.

• Durability: Features high-grade guide shoes designed to resist chain friction and heat.

• Service Note: Includes the electronic connector for VVT solenoid integration.

Service Notes

Always verify fitment by VIN before ordering. Replacing the 058 109 088K camshaft chain tensioner requires specialized tools to compress the unit for removal. During this service, it is mandatory to replace the cam chain tensioner gasket and the half-moon seal to prevent future oil leaks.

Cross Reference Numbers

• 058 109 088K

Additional information