1AR-FE Engine in Phoenix, Arizona
The 2.7-litre Toyota four that powered a generation of Camrys, RAV4s and Highlanders in naturally aspirated form, now reaching the age where replacement is a live question.
- Family
- 1AR-FE (AR-series)
- Displacement
- 2.7 L
- Configuration
- Inline-four
- Valvetrain
- DOHC, 16 valves, Dual VVT-i
- Produced
- 2008 onward
Bore and stroke are omitted for this family: the code covers variants with different figures, and a single pair of numbers would be wrong for some of them.
The 1AR-FE is a 2,672 cc inline-four from Toyota's AR family, introduced in 2008 as the replacement for the 2AZ-FE in certain applications. It uses Dual VVT-i and produces more output than the 2AZ-FE it replaced while meeting tighter emissions standards.
The primary applications are the RAV4 and the Highlander, where the 1AR-FE served as the base four-cylinder engine. It was not widely fitted to the Camry, which continued with the 2AZ-FE and later the 2AR-FE, a related but different engine.
For a replacement buyer the critical point is that the 1AR-FE and the 2AZ-FE it replaced are not interchangeable despite covering some of the same vehicles. They use different bolt patterns, different accessory layouts and different engine management. A replacement should match the variant code of the original.
The 1AR-FE and 2AR-FE are related but different
The 2AR-FE that succeeded the 1AR-FE in some applications uses a different intake and head design with revised calibration. Despite the similar name, the two are not interchangeable without addressing the engine management.
Supply the year, trim and VIN to confirm the exact variant. The family code alone is not enough.
Oil consumption considerations
Toyota engines of this era have a known tendency toward oil consumption that varies by model year and production batch. On a used replacement unit, asking what the donor vehicle's history was is worth doing.
Because these are timing chain driven engines, the chain and tensioner are not service items in the same way a belt is, but a rattling chain on startup is a symptom worth checking before the engine ships.
Vehicles built with a 1AR-FE
A mid-range four-cylinder that sat in the Camry, RAV4, Highlander and Venza, each with its own accessory and emissions configuration.
| Vehicle | Years | Trim / body | Engine code | Market |
|---|---|---|---|---|
| Toyota RAV4 | 2009–2012 | 2.7L | 1AR-FE | USDM |
| Toyota Highlander | 2009–2013 | 2.7L | 1AR-FE | USDM |
1AR-FE variants
The 1AR-FE is the core variant. The 2AR-FE that followed in some applications is a related but different engine.
- 1AR-FEBoth
- The standard 2.7-litre AR-family specification for RAV4 and Highlander.
Identifying a 1AR-FE
- The engine code is stamped on the block. The AR family also includes the 2AR-FE, which is a different displacement used primarily in the Camry.
- The 1AR-FE can be distinguished from the 2AZ-FE by its larger displacement, different intake manifold and Dual VVT-i solenoids on both camshafts.
- Confirm the stamped code matches the donor vehicle. The 1AR-FE and 2AR-FE are sometimes confused because both are AR-family four-cylinders.
A seller describing an engine as a particular variant is making a checkable claim. Asking for a photograph of the stamp on the actual unit is not a sign of distrust; it is the normal way this gets confirmed. The engine code guide shows where each family is stamped if you want to read the one in your own car first.
What varies between 1AR-FE units
These are the differences that decide whether two engines with the same family code are substitutes in a particular car.
- The 1AR-FE and the 2AZ-FE are NOT interchangeable. They use different bolt patterns, accessory layouts and engine management despite both being inline-four Toyotas.
- The 1AR-FE and 2AR-FE are different displacements within the AR family and are not drop-in substitutes for one another.
- RAV4 and Highlander applications differ in accessory layout and mounting; supply the year, trim and VIN to confirm the correct variant.
Nothing on this page confirms that a specific 1AR-FE will work in your vehicle. That takes the year, model and trim at one end and a specific unit at the other, and it happens before a price is given rather than after. What goes into that check is set out here.
Ask about a 1AR-FE for your vehicle
The code is pre-filled. Add the year, model and trim, and the variant question gets settled on our side before anything is confirmed.
Common questions
Is the 1AR-FE the same as the 2AZ-FE?
No. The 1AR-FE is a 2.7-litre AR-family engine that replaced the 2AZ-FE in certain applications, but the two use different bolt patterns, accessory layouts and engine management. They are not interchangeable despite both being Toyota inline-four engines.
Is my 2010 Civic an R18 or a K20?
An R18A1 unless it is an Si, in which case it is a K20Z3. The trim decides it, not the model year, and this is the single most common way a Civic engine order goes wrong. Check the trim badge and the stamped code before ordering.
Related pages
- 2AZ-FE EngineThe 2.4 four from the Camry, RAV4 and Highlander.
- 2GR-FE EngineToyota's 3.5 V6 from the Camry, RAV4, Highlander and Lexus models.
- K24 EngineThe 2.4 K-series from the Accord, CR-V, Element and TSX.
- Toyota RAV4The Camry’s engine with an all-wheel-drive variable attached.
- Toyota EnginesToyota engine families from the 2AZ-FE to the JZ-series sixes.
- What Comes With a JDM EngineWhat is usually attached, what almost never is, and what to confirm in writing.
Find the right engine for your vehicle
Tell us the year, model and trim. We identify the engine your vehicle takes and come back with current availability and pricing.