What is the engine code for a 2005 Lexus GS 300?
The engine code is 2JZ-GE. This article explains what that code means, how it identifies the engine, and why it matters for maintenance and parts compatibility.
Understanding the engine code
In Lexus and Toyota naming, 2JZ-GE designates a specific 3.0-liter inline-six engine from the JZ family. The letters indicate generation, family, and fuel system characteristics, which helps technicians source the right parts and manuals for the GS 300.
Origins and family
The 2JZ-GE is part of Toyota's renowned JZ inline-six engine family. The naturally aspirated 3.0L variant was used in several rear- and all-wheel-drive Lexus and Toyota models, most notably the GS300 and IS300. Its turbocharged sibling, the 2JZ-GTE, is famous for high performance in other applications.
Specifics for the 2005 GS 300
For the 2005 GS 300, the vehicle runs the non-turbo 2JZ-GE: a 3.0-liter DOHC inline-six with 24 valves and sequential multi-point fuel injection. Depending on the market, this engine produced roughly 215–230 horsepower and around 210 lb-ft of torque. Variable valve timing (VVT-i) was introduced in various refinements over the model years and may appear on some late-production versions.
Key technical notes
Here are core specifications that define the engine you’ll find in the 2005 GS 300:
- Engine family: JZ-series, model 2JZ-GE
- Displacement: 3.0 liters (approximately 2,990–3,000 cc)
- Configuration: Inline-6
- Valvetrain: DOHC, 24 valves
- Fuel system: Sequential multi-point fuel injection
- Induction: Naturally aspirated
- Valve timing: VVT-i on some later-year iterations
- Drive system: Timing chain (not a belt)
The above notes indicate a durable, smoothly delivering engine with a reputation for robust mid-range power and long service life.
Maintenance and parts considerations
Knowing the engine code helps you source the correct parts, service manuals, and compatible components across GS300 years. The 2JZ-GE is chain-driven and benefits from regular checks of timing chain tensioners, water pump, and ignition components as part of routine maintenance.
Practical tips
Before purchasing parts or working on the engine, keep these tips in mind:
- Verify the engine code on the engine block plate or the VIN-based build sheet to confirm you have a 2JZ-GE (and not a turbo 2JZ-GTE).
- Consult the official Lexus/Toyota service manual for torque specs, service intervals, and VVT-i calibration.
- When diagnosing performance issues, check for common 2JZ-GE wear items such as spark plugs, ignition coils, and timing chain components.
These practices help ensure correct parts fitment and reliable operation of the engine.
Summary
The engine code 2JZ-GE identifies the 3.0-liter naturally aspirated inline-six used in the 2005 Lexus GS 300. It’s part of Toyota’s JZ family, known for durability and smooth performance, with maintenance considerations centered on timing chains, fuel injection, and VVT-i-related components. This code helps buyers and owners source the right parts and manuals for upkeep and repairs.
What is the engine code for a 2005 Lexus GS300?
2JZ-GE C
2005 Lexus GS300 (3.0L 6 -cyl Engine Code 2JZ-GE C) Motor Oil, Filters and Lubricants - AMSOIL.
What year did the GS300 have a 2JZ?
In the US, the last vehicles to utilize the trusty 2JZ engine were the Lexus IS300 and GS300. The 1991-1997 GS was the first of this pair to use the famous powerplant. The second-gen from 1998-2005 then took over and continued to boast the 2JZ until it was replaced by the third-gen variant in 2005.
What engine is in the Lexus GS300?
The Lexus GS 300 has different engines depending on the model year. Older models (1998-2005) featured the legendary 2JZ-GE, a 3.0-liter inline-six engine. Newer models, like the 2019 GS 300, use a 2.0-liter turbocharged inline-four engine, while 2006-2011 models use a 3.0-liter V6 (3GR-FSE).
Older models (1998-2005)
- Engine: 2JZ-GE 3.0-liter inline-six
- Features: Naturally aspirated, known for its reliability and durability
- Horsepower: ~220-225 hp
- Torque: ~220 lb-ft
- Key characteristic: Legendary status due to its robustness and ability to handle high power with modifications
Newer models
- 2019 GS 300: A 2.0-liter turbocharged inline-four engine
- 2006-2011 GS 300: A 3.0-liter V6 engine (3GR-FSE)
What engine is in the 2005 Lexus IS 300?
The Lexus IS300's 3.0-liter six-cylinder engine, also known as the 2JZ-GE, was the same engine found in the Toyota Supra, with a slightly different configuration and no turbos, producing 215 hp and 218 lb-ft of torque.
