Genuine OEM
Genuine Boost Control Solenoid Valve 25850-51010 | Landcruiser VDJ79 VDJ76 VDJ78 1VD-FTV
Genuine Boost Control Solenoid Valve 25850-51010 | Landcruiser VDJ79 VDJ76 VDJ78 1VD-FTV
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Genuine OEM, Made in Japan | E-VRV / VSV | 70 Series V8 Single Turbo
Genuine boost control solenoid valve (E-VRV) for the single turbo 1VD-FTV V8 in the 70 Series Landcruiser. This solenoid meters vacuum from the engine driven vacuum pump to the variable nozzle turbo actuator, and it is a well documented failure point on the VDJ79, VDJ76 and VDJ78. Water and dust ingress kills the unit and corrodes the connector. The result is low boost, gutless response, limp mode and a boost control fault code.
It gets blamed on the turbo constantly, but this solenoid is one of the most common real culprits, at a fraction of the cost of a turbo.
What Is Included
- 1 x genuine OEM boost control solenoid valve assembly, part number 25850-51010 (brand new, made in Japan)
Specifications
| Type | Boost control solenoid / electric vacuum regulating valve (E-VRV / VSV) |
| Function | Regulates vacuum supply to the variable nozzle turbo actuator for boost control |
| Engine | 4.5L 1VD-FTV V8 single turbo |
Vehicle Fitment
- Landcruiser 70 Series (VDJ70 family): VDJ76 wagon, VDJ78 Troop Carrier, VDJ79 single and dual cab
- 4.5L 1VD-FTV V8 single turbo, 2007 to current
Does not suit the twin turbo VDJ200 (200 Series), which runs electrically actuated turbos and a different boost control arrangement. Unsure? Send us your VIN or rego and state and we will confirm fitment before you order.
Diagnosing a Failed Boost Control Solenoid
Typical symptoms on the 1VD-FTV are low or erratic boost, sluggish acceleration, limp mode and stored boost control codes: P0046, P0047 or P0048 for the solenoid circuit, P0299 for underboost, or P1251 for overboost.
Before condemning the solenoid, unplug the connector and inspect it for corrosion or moisture, since water ingress is the most common root cause and a corroded connector will kill a new solenoid just as fast. Check the vacuum lines to and from the valve for perishing, splits or oil contamination, then check the solenoid coil resistance against factory spec with a multimeter. An open circuit reading confirms a dead solenoid.
A P1251 overboost code often means the turbo nozzle vanes are sticking rather than the solenoid failing, so verify free movement of the VNT actuator lever before buying parts.
Fitting Notes
- Straightforward swap: unplug the connector and note the vacuum hose routing before removal
- Inspect the hoses while you are in there. Perished or split vacuum lines cause identical symptoms, so replace any suspect hose at the same time
- Clean or treat a corroded connector before fitting the new unit
- Clear fault codes after fitment and confirm boost behaviour on a road test
Shipping and Payment
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Covered by our standard warranty alongside your guarantees under the Australian Consumer Law. Full terms are on our Refund, Returns and Warranty Policy page. Delivery details are on our Shipping Policy page.
Frequently Asked Questions
Which Landcruisers does this solenoid fit?
All single turbo 1VD-FTV 70 Series variants: VDJ76 wagon, VDJ78 Troop Carrier and VDJ79 single and dual cab, 2007 to current. It does not suit the twin turbo 200 Series.
What fault codes point to this solenoid?
P0046, P0047 or P0048 for the solenoid circuit, P0299 for underboost, or P1251 for overboost. A P1251 can also mean sticking turbo vanes, so check the actuator lever moves freely first.
How do I confirm the solenoid is dead?
Inspect the connector for corrosion or moisture, check the vacuum lines, then measure coil resistance against factory spec. An open circuit reading confirms a dead solenoid.
Is this part genuine?
Yes. Genuine OEM part number 25850-51010, brand new, made in Japan.
Low Boost On Your V8 Cruiser?
Test this solenoid before you condemn the turbo. Genuine 25850-51010, in stock Brisbane.
Common Rail Cowboys is not affiliated with Toyota Motor Corporation. Manufacturer names and part numbers are used for identification and fitment reference only. Installation by a competent person is recommended. Fitment verification is the buyer's responsibility. Modifications may affect manufacturer warranty and vehicle compliance.
