Do Toyota Sequoias have a timing belt or chain?
Yes. Toyota Sequoias use timing chains rather than timing belts, across the model’s generations and engine options—from the 4.7L V8 to the 5.7L V8 and the latest i‑FORCE MAX hybrid.
Across generations, Toyota has kept the timing-drive approach consistent: a chain that typically lasts for the life of the engine, with maintenance focused on tensioners and guides rather than belt replacements. This article outlines which engines are in Sequoias and what that means for long-term upkeep.
Engine options and their timing drive
The Sequoia lineup has transitioned from older V8s to a modern hybrid, but the timing chain remains the method that drives the camshafts in every major engine. Here is a quick breakdown by engine family.
- 2UZ-FE 4.7L V8 (used in early Sequoias): timing chain.
- 3UR-FE 5.7L V8 (used in later Sequoias): timing chain.
- i-FORCE MAX 3.5L twin-turbo V6 hybrid (latest Sequoias): timing chain.
These engines share a common approach to the timing operation, meaning there is no scheduled timing belt replacement to plan for, regardless of model year.
Maintenance considerations
While timing chains don't require regular replacements like belts, owners should still perform routine maintenance to preserve chain life and avoid failures.
- Use the recommended oil grade and follow service intervals; dirty or low oil can accelerate wear on chain tensioners and guides.
- Be alert for unusual engine sounds, such as rattling or clattering on startup or idle, which can indicate chain wear or tensioner issues.
- Follow any Toyota service notices or bulletins related to chain components; address complaints promptly with a dealer or trusted mechanic.
In practice, a Sequoia’s timing chain should last a long time, and a belt replacement is not part of routine maintenance for these engines.
Summary
Across all current and recent Toyota Sequoia engines, timing chains, not belts, drive the camshafts. This includes the 4.7L V8, the 5.7L V8, and the modern i‑FORCE MAX hybrid setup. Chains generally don’t require scheduled replacements, but owners should maintain proper oil quality and listen for unusual noises to protect the chain system and tensioners.
