Does the 2014 Lexus RX 350 have a timing belt or chain?
Short answer: It uses a timing chain, not a belt. The 2014 RX 350 is powered by a 3.5-liter V6 engine (2GR-FE) that relies on a chain-driven timing system.
In more detail, the RX 350’s 2GR-FE engine uses a metal timing chain with tensioners and guides to synchronize the camshafts and crankshaft. Because timing chains are designed for long life, there is no fixed replacement interval like timing belts; proper maintenance can help ensure longevity, but components like tensioners can wear over time and may require service if noises develop.
Engine and timing system
Key facts about the engine and how the timing chain is configured in the 2014 RX 350.
- The 2014 RX 350 uses the 3.5-liter 2GR-FE V6, which is driven by a timing chain rather than a belt.
- A timing chain operates with tensioners and guides and typically lasts the engine’s lifetime under normal maintenance; it does not have a regular replacement interval like a belt.
- Chain wear or tensioner/guide issues can cause timing noise or rough running, but failures are relatively uncommon with proper oil changes and care.
Conclusion: For most owners, the timing chain will outlast the vehicle with routine maintenance. There is no scheduled belt replacement for the 2014 RX 350.
Maintenance considerations and what to listen for
Practical guidance for owners on monitoring the timing chain system and its components.
- Maintain the engine oil at the manufacturer-recommended intervals and use the correct viscosity; clean oil helps keep the chain and tensioners properly lubricated.
- If you hear unusual rattling, slapping, or chain-like noises, have a dealer or qualified mechanic inspect the chain, tensioners, and guides.
- There is no mandated belt replacement interval; replacement is only performed if the chain/tensioner system shows excessive wear or failure.
Overall, the 2014 RX 350’s timing chain is designed to be a maintenance-free component for the long term, assuming regular maintenance is performed.
Summary: The 2014 Lexus RX 350 uses a timing chain, not a belt, for the 3.5L V6 engine. With routine oil changes and proper maintenance, the chain is expected to last the life of the engine and does not have a fixed replacement interval.
