Diesel Injector Rebuild Set – DENSO 095000-8290 / 8220 & Toyota 23670-0L050

This overhaul kit is dimensionally matched to DENSO G2-type common rail injectors carrying factory codes 095000-8290 and 095000-8220, cross-referenced with Toyota OEM number 23670-0L050. The set provides the wearable consumables-nozzle, control valve components, and high-temperature sealing elements-required to restore injector performance in high-mileage diesel powerplants. For workshops serving mining-region Hilux and Hiace fleets across Africa and Southeast Asia, this kit offers a cost-effective alternative to complete injector replacement while preserving the original solenoid and body assembly.

The part number pair 095000-8290 / 23670-0L050 identifies injectors factory-fitted to the Toyota 1KD-FTV 3.0L and 2KD-FTV diesel engines, commonly found in Hilux Vigo, Land Cruiser Prado, and Hiace models produced during the Euro 3 production window . The nozzle specification for this variant is DLLA155P863, and the injector body carries an 11-code calibration marking, which corresponds to the early-generation ECU programming . When ordering, confirm the laser-engraved six-digit code on the injector flange-this kit is not interchangeable with 13-code or 18-code later variants, as the ECU will reject mismatched compensation values . The accompanying 095000-8220 number represents a closely related Denso assembly code that shares the same nozzle and valve plate architecture, allowing this kit to service both references.

Inside the package, the workshop receives the DLLA-series nozzle, a replacement valve plate (commonly referenced as #10 or E1022003), the control valve assembly with lapped mating surfaces, and a full set of O-rings and copper washers . The nozzle is the primary wear point-its spray holes undergo erosion from combustion pressures exceeding 1,600 bar, leading to fuel dribble and compromised atomization. The kit also addresses the command piston and pressure spindle interfaces, though these are inspected for scoring rather than automatically replaced. A critical distinction: this 11-code generation lacks the DLC (Diamond-Like Carbon) coating applied to later injector internals, which means the armature and valve surfaces are more susceptible to wear from poor fuel quality and extended service intervals . This makes periodic rebuilds with correct-spec kits particularly important for fleets operating on high-sulphur or contaminated diesel.

Rebuilding these injectors demands a clean environment and precision tooling. Begin with ultrasonic cleaning of the injector body-but avoid submerging the solenoid to prevent plastic housing degradation and insulation damage . Upon disassembly, inspect the control valve seat and spindle surfaces for microscopic scratching; if present, lapping tools specific to Denso valve seats are required to restore the hydraulic seal . The nozzle retaining nut must be torqued to factory specification (typically 68–75 Nm) using a dedicated socket to avoid distortion of the body bore . After reassembly, validation on a test bench is non-negotiable: measure return flow rates and verify the nozzle opening pressure (NOP) against the OEM baseline of approximately 16.5 MPa . Finally, input the new injector compensation codes into the ECU via diagnostic tool-failure to do so results in rough idle and incorrect fuel trims.

The alternative to rebuilding is complete injector replacement, which typically costs three to four times the price of this kit. For workshops stocking parts for Toyota 1KD/2KD service work, keeping this kit on the shelf reduces vehicle downtime-a critical factor for agricultural and mining customers who cannot afford days of lost productivity. Moreover, the predictable failure modes of non-DLC-coated internals make scheduled rebuilds at 150,000–200,000 km intervals a sound maintenance strategy rather than a reactive repair . Replacing the nozzle and control valve before catastrophic failure prevents secondary damage to the high-pressure pump and fuel rail, preserving the integrity of the entire common rail system.

Q1: How do I verify whether my vehicle needs the 11-code version of this kit versus the 13-code?
A: Unplug the electrical connector on top of any injector and read the first two digits of the calibration code printed on the injector body. If it starts with "11", this kit (095000-8290 / 23670-0L050) is correct. 13-code and 18-code variants use different ECU programming and are not interchangeable .

Q2: This kit lacks DLC coating on internal parts-does that significantly affect service life in high-sulphur fuel regions?
A: Yes, the absence of DLC coating means the armature and control valve surfaces are more prone to wear, particularly with poor-quality fuel. More frequent inspection intervals (every 120,000–150,000 km) are recommended compared to later coated generations .

Q3: Can this kit be used to rebuild injectors that have already been reconditioned once before?
A: Provided the injector body bore and solenoid remain within tolerance, yes. However, if the control valve seat or guide plunger shows deep scoring that cannot be lapped out, the core is considered unserviceable and the rebuild will not hold .

Q4: What test bench parameters should I check after assembling this kit?
A: Verify nozzle opening pressure (approximately 16.5 MPa), static leak test (85 MPa range), and injection volume metering across all fuel charges. Also confirm solenoid coil resistance (approx. 0.72 Ω) and inductance (180 µH) as a baseline electrical check .

Q5: Is ECU coding mandatory after installing this rebuild kit, or can the engine run without it?
A: Coding is mandatory. Each injector carries a unique calibration code that must be programmed into the ECU. Without correct coding, the engine will idle roughly and fuel trims will deviate from specification .

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