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Land Rover AJ126 specs: 3.0L (183 ci) 6-cylinder, 84.5 x 89 mm (3.3268 x 3.5039 in) bore and stroke, 10.5:1 compression. Rated 340 hp, 2014–2020.
The Land Rover AJ126 is undersquare — the 3.5039" stroke exceeds the 3.3268" bore by 5.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5039" stroke puts mean piston speed at 4,000 ft/min around 6,850 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 30.5 ci (500 cc).
10.5:1 is in the range that usually runs on pump premium.
It is one of 3 engines in the Land Rover 183ci family, all of them 183 ci — the differences between them are in compression, heads and rating, not displacement. 10 factory variants share these dimensions, rated at 340 hp across 2014–2020.
| Displacement | 183 ci / 3 L |
|---|---|
| Bore | 3.3268" |
| Stroke | 3.5039" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 0.949 |
| Fuel type | gas |
|---|---|
| Advertised HP | 340 hp |
| Years | 2014–2020 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2014 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2015 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2016 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2017 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2018 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2019 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
| 2020 | AJ126 net | 340 @ 6500 | 332 lb-ft @ 3500-5000 | 10.5:1 |
Factory specification sheet.
| Bore/stroke character | 0.949 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,504 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2014 | — | AJ126 |
| 2014 | 340 hp | AJ126 |
| 2015 | — | AJ126 |
| 2015 | 340 hp | AJ126 |
| 2016 | — | AJ126 |
| 2016 | 340 hp | AJ126 |
| 2017 | 340 hp | AJ126 |
| 2018 | 340 hp | AJ126 |
| 2019 | 340 hp | AJ126 |
| 2020 | 340 hp | AJ126 |
2 factory vehicles, 2014–2020. Each year opens that model's engine table.