The cylinders are inside the engine block of the RX 350’s 3.5-liter V6, arranged as a 60-degree V with two banks of three cylinders each.
Engine layout and cylinder configuration
The 2009 RX 350 is powered by Lexus/Toyota’s 3.5-liter V6, the 2GR-FE. The six cylinders are laid out in a V shape, with three cylinders on each bank. The banks sit on opposite sides of the crankshaft within the aluminum engine block, beneath the valve covers and intake manifold. This arrangement is typical of modern overhead-cam V6 engines and is designed for a compact, efficient power unit in a front-engine crossover.
From outside the engine bay, the cylinder walls are not visible without removing top-end components; the engine’s outer cover and plumbing obscure the cylinder layout during normal operation.
Key facts about the cylinder layout:
- Two banks of three cylinders each (six cylinders total).
- Engine is a 60-degree V6 (2GR-FE) with the banks located on opposite sides of the crankshaft.
- The cylinders reside inside the engine block under the valve covers and intake manifold; access requires removing components for maintenance.
- The RX 350’s engine is mounted in the front of the vehicle, with the cylinder banks oriented within the block as part of the compact V6 design.
This configuration informs how technicians approach maintenance, diagnostics, and component removal in service procedures.
Access considerations for maintenance
To inspect or service the cylinders themselves, technicians usually remove the air intake, throttle body, and valve covers to reveal the cylinder heads. In some procedures, additional disassembly of the intake manifold or surrounding components may be required. Always follow the service manual for torque specs and safe disassembly steps.
Summary
The cylinders on a 2009 Lexus RX 350 are contained within the engine block as a six-cylinder, 60-degree V6 (2GR-FE). They form two banks on opposite sides of the crankshaft in the front of the engine bay and are not visible from the top without disassembly. This layout underpins how the engine is serviced and accessed during maintenance.