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4.0L 24v - 1GR-FE
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4.0L 24v - 1GR-FE
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Set of 12 reinforced exhaust valves for the Toyota 1GR-FE 4.0 V6.
The 1GR-FE is Toyota's 4.0 litre, 24-valve petrol V6, fitted to the Land Cruiser, Land Cruiser Prado, Hilux and Fortuner, vehicles built for towing and off-road driving.
Its two cylinder heads carry 12 exhaust valves. In standard size, the valve offered has a 29.5 mm head, a 5.46 mm stem and a 105.95 mm overall length. Towing and long climbs keep them under heavy load for long periods, and supercharger conversions expose them even more.
On a naturally aspirated engine the metal of the exhaust head works between 760 and 870 °C; it goes beyond 1,000 °C with a supercharger or turbo. The seat carries away about 75 % of the heat, the guide 20 %. An EV8 family exhaust steel is the benchmark: 550 MPa at 600 °C, 300 MPa at 800 °C. Under sustained load the head fatigues, distorts and sealing deteriorates.
The valve offered is made of Super Alloy, a nickel-based alloy, and belongs to the Competition Plus range, which brings 20 % more hot strength and 25 % longer seat life.
The F1287P takes the head to 30.5 mm: the burnt gases leave faster and scavenging improves, with about 10 to 12 cfm of extra flow per millimetre of head. The 12 exhaust seats are then machined to that diameter.
| Part number | Brand | Size | Head Ø | Stem Ø OEM 5.5 mm | Length OEM 105.8 mm | Grooves | Material |
|---|---|---|---|---|---|---|---|
| F1286P*12 | FERREA | Standard | 29.5 mm | 5.5 mm | 106.0 mm | single groove | Super Alloy (nickel-based) |
| F1287P*12 | FERREA | +1 mm | 30.5 mm | 5.5 mm | 106.0 mm | single groove | Super Alloy (nickel-based) |
| Part | Toyota original | Reinforced |
|---|---|---|
| Collets | 90913-03028 | K10097 |
| Valve stem seals | 90913-02101 / 90913-02111 / 90913-02112 | VS-T5.5E-12 |
| Valve guide | Inner Ø 5.5 mm | VG1081 / GDE-TS55-E |
Both part numbers have a single lock groove: check that it matches the collets you reuse before refitting the springs.
At 29.5 mm the seats keep their diameter; with the F1287P, the 12 exhaust seats are cut to 30.5 mm.
Both part numbers have the same 5.46 mm stem and 105.95 mm overall length: the original guides are fine if they are within tolerance.
 | FERREA, founded in 1978, makes its valves in Florida and Argentina. For the 1GR-FE it offers a single-groove Super Alloy exhaust valve, in standard size and +1 mm. |
Same material and same groove: only the size separates the two versions.
| Criterion | Option 1 | Option 2 |
|---|---|---|
| Size | Standard, 29.5 mm Original seats kept. F1286P. | +1 mm, 30.5 mm More flow, seats machined. F1287P. |
| Model | Engine code | Power | Years |
|---|---|---|---|
| Hilux VII 4.0 V6 (N1, N2, N3) | 1GR-FE | 238 hp | 2005-2016 |
| Hilux VIII 4.0 V6 (N1) | 1GR-FE | 238 hp | 2015- |
| Fortuner 4.0 (N5, N6) | 1GR-FE | 238 hp | 2005-2015 |
| Fortuner 4.0 (N15, N16) | 1GR-FE | 235-238 hp | 2015- |
| Land Cruiser 4.0 (J7) | 1GR-FE | 231 hp | 2007- |
| Land Cruiser Prado 4.0 (J12) | 1GR-FE | 235-282 hp | 2002-2010 |
| Land Cruiser Prado 4.0 (J15) | 1GR-FE | 249-282 hp | 2009- |
| Land Cruiser 200 4.0 (J2) | 1GR-FE | 239-271 hp | 2010- |
| Land Cruiser 300 4.0 (J3) | 1GR-FE | 273 hp | 2021- |
OEM part number (exhaust valve): 13715-31090; 13715-31091; 13715-31140
A 1GR-FE cylinder head on the bench is the right time to replace the inlet valves and the valve stem seals as well.
| Toyota 1GR-FE inlet valves → |
