This kit is a 10-piece timing chain set specifically designed for Mercedes-Benz M271 engines, covering essential components for timing system replacement. It fits select 1.8L and 2.0L inline-4 engines (e.g., C-Class, E-Class, GLK models). The timing chain synchronizes the crankshaft and camshaft, ensuring precise valve timing, which is critical for engine performance and longevity.
Model/Engine | Chassis Code | Engine Code | Year Range |
---|---|---|---|
C-Class 1.8L / 2.0L | W203, W204 | M271.8xx | 2002–2011 |
E-Class 1.8L / 2.0L | W211, W212 | M271.9xx | 2002–2011 |
GLK-Class 2.0L | X204 | M271.940 | 2008–2011 |
SLK-Class 1.8L / 2.0L | R171 | M271.8xx | 2004–2011 |
Note: Confirm compatibility via VIN or OEM part numbers (e.g., A2710502202).
Timing Chain – The primary chain that replaces the worn original part.
Guide Rails / Tensioner Rails – Plastic or metal rails designed to reduce chain friction and noise.
Tensioner – Automatic or manual adjuster to maintain proper chain tension.
Sprockets – Gears that drive the chain (may include crankshaft or camshaft sprockets).
Bolts / Washers – Matching fasteners (some kits may include these).
Precision Fit: CNC-machined components ensure exact alignment with M271 engine specs.
Noise Reduction: Optimized guide rail design reduces chain slap and vibration.
Corrosion Protection: Chains coated with anti-rust treatment (e.g., zinc or DLC).
Wear Resistance: Sprockets use case-hardened teeth for extended life.
OE+ Upgrades: Improved tensioner design over OEM to prevent premature failure.
Chain Production:
Material: High-grade alloy steel (DIN 1.6587).
Process: Pre-stretched via roller burnishing to reduce elongation.
QC: 100% magnetic particle inspection for cracks.
Guides/Rails:
Injection Molding: Glass-fiber-reinforced polyamide (PA6-GF30) for heat resistance.
Testing: Simulated 500-hour wear cycles under load.
Tensioners:
Hydraulic: CNC-machined body with precision piston and spring.
Leak Test: 100% pressure-checked for seal integrity.
Balance Shaft Chain Kit (M271 common failure point).
Water Pump (prevent coolant leaks during service).
Camshaft Adjuster Solenoids (if showing wear codes).
Critical: Align cam/crank marks using MB Star Diagnostic Tool (avoid ±2° deviation).
Torque Specs: Tensioner bolts (20 Nm + 90° turn), sprocket bolts (50 Nm).
Break-In: Run engine at 2,000 RPM for 10 minutes to seat tensioner.