DENSO 095000-6730 / 23670-51020 G2 Common Rail Injector Overhaul Kit

Designed for the bench remanufacture of G2 series common rail injectors, this precision-machined DENSO repair kit (095000-6730 / 23670-51020) delivers a complete component set targeted specifically at the high-output Toyota 1VD-FTV V8 diesel powerplant. Restoring injector performance to factory flow specifications without necessitating complete unit replacement becomes achievable through this overhaul package, which systematically addresses the critical wear points that degrade fuel atomisation and combustion efficiency across extended high-mileage service intervals.

This overhaul kit, engineered for the DENSO G2 injector platform, incorporates the essential wear components subject to degradation under extreme rail pressures that routinely exceed 1600 bar. Included within the kit are a DLLA-series precision nozzle, valve seat assembly with retaining nut, control valve featuring the critical half-ball valve element, NOP (Needle Opening Pressure) spring with associated shims, command piston, and a full complement of high-temperature O-ring seals and copper gaskets. Dimensional matching to the injector body casting characterises the 095000-6730 service package, while the 23670-51020 OEM cross-reference confirms compatibility with original equipment fitment. Of particular significance to a successful overhaul is the inclusion of the solenoid calibration shim and spring tensioning components, which govern the precise electromagnetic actuation timing that defines the G2 series. Metallurgical specifications of the component parts meet or surpass the standards of original Denso production items, with nozzle orifice geometry engineered to deliver the exact spray pattern demanded for optimal combustion within the 4.5L V8 configuration.

Exclusive cross-referencing ties this repair kit to the Toyota Land Cruiser 200 Series (J200 chassis) powered by the 1VD-FTV 4.5L V8 twin-turbo diesel engine, with production coverage extending from 2007 onwards across multiple power variants including 173kW, 195kW, 200kW, and 210kW output configurations. Direct replacements for OEM numbers 23670-51020, 23670-51031, 23670-59025, 23670-59035, and 23670-59037 are provided by the 095000-6730 injector assembly and its DCRI109780 service counterpart across the full Land Cruiser 200 model lifecycle. Although primary targeting is the Toyota V8 platform, deployment of the G2 injector architecture also occurs in certain Isuzu 4HK1 and 6HK1 truck applications, where suitability may exist for those applications provided injector body codes correspond. Streamlining of parts stocking for workshops servicing Australian, European, and Middle Eastern off-road and commercial fleets is achieved through this single SKU, which covers the majority of 1VD-FTV injector service requirements given the dominant position of the Land Cruiser 200 in those markets.

Meticulous adherence to clean-room practices and precise torque application is demanded when rebuilding DENSO G2 injectors. Mounting the injector body vertically in a suitable holding jig represents the initial step, after which careful removal of the solenoid assembly using a 27mm crow's foot wrench follows, with attention given to extracting and retaining the calibration shim and spring without inflicting damage. Considerable tightness is exhibited by the valve seat retaining nut-application of the correct three-pronged socket with guide support and moderate heat from an electric heat gun proves essential, while a blowtorch must be avoided to prevent thermal distortion of the injector body. Correct orientation of locating dowels and proper seating of the half-ball valve flat face within the valve stem must be ensured when fitting the new nozzle and valve seat from the kit-immediate control chamber leakage will result from installation with the spherical side exposed. Stage-by-stage execution of the valve seat nut torque sequence to distribute clamping force evenly is required after the nozzle retaining nut has been tightened to manufacturer-specified torque values using a calibrated wrench. Prior to engine installation, mandatory bench testing on a calibrated common rail test stand must be performed on the rebuilt injector to verify spray pattern, leak-off rates, and actuation response-repeated failures and customer comebacks are invited by fitment without this validation step.

Measurable cost benefits for fleet operators and repair facilities are delivered by the decision to overhaul rather than replace injectors at 160,000–200,000 km intervals. Approximately 30–40% of the cost of new OEM injectors is represented by a complete set of eight injector rebuild kits, while fuel efficiency is restored to within 2–3% of factory new performance benchmarks. Beyond direct parts savings, degradation in fuel atomisation that progressively worsens as nozzle wear increases is addressed by the 095000-6730 overhaul-reduced DPF soot loading, lowered exhaust gas temperatures, and prevention of the cylinder wash-down and bore scoring that result from poor combustion all follow from restored proper spray geometry. Differentiation of service capability is achieved by workshops offering in-house injector rebuilding with high-quality kits, while customer downtime is reduced through elimination of core exchange logistics and the service margin that would otherwise go to remanufacturing suppliers is captured. Delivery of 120,000+ km of reliable service from properly rebuilt injectors with new valve seats and nozzle assemblies is consistently observed when the work is executed to specification.

Q1: What method should I use to verify this repair kit matches the injectors currently in my workshop inventory?
A: Examination of the injector body number stamped on each unit's side is required-095000-6730 must be confirmed, and the injector must be identified as the G2 solenoid-type configuration. Cross-referencing the nozzle code on the existing nozzle against the DLLA series supplied in this kit should also be performed. Confirmation of compatibility with the 1VD-FTV engine is further provided by the OE vehicle part number 23670-51020.

Q2: Is a common rail test bench essential for installing this kit, or can the rebuild be completed without one?
A: Under no circumstances is installation without a test bench recommended. Performance of the mechanical installation with standard tools is possible, but verification of needle lift, leak-off rates, and spray pattern against DENSO specifications can only be achieved through a calibrated test stand. Poor performance, increased emissions, and potential engine damage from improper fuel delivery are risks associated with installing untested rebuilt injectors.

Q3: Are the injector correction (QR) code shims supplied within this kit?
A: Factory-specification calibration and spring tensioning shims are contained within the kit. However, authorised DENSO or Hartridge equipment is required for producing a new injector correction code through advanced flow testing. Retention of the original QR code by the rebuilt injector may occur if the solenoid and valve assembly calibration remains unchanged-verification on the test bench that performance matches the original correction data is advised.

Q4: What mileage can be anticipated from an injector properly rebuilt using this kit?
A: In excess of 120,000 km of normal service is reliably delivered by an injector rebuilt with this kit when bench-tested and confirmed to OEM tolerances. Dependence of actual longevity on fuel quality, filtration system condition, and adherence to scheduled maintenance intervals for the fuel and air intake systems should be noted.

Q5: Will the seals supplied in this kit maintain integrity when exposed to biodiesel blends or ULSD?
A: Compatibility with B20 biodiesel blends and ultra-low sulphur diesel is ensured by the O-rings and copper seals, which are produced from materials rated for high-pressure common rail fuel systems. Consultation with your supplier regarding specific seal material composition is recommended for biodiesel concentrations exceeding B20 to confirm long-term chemical compatibility.

Q6: Are volume pricing arrangements available for workshops or distributors purchasing multiple kits?
A: Discount structures for bulk orders are offered for workshops, fleet maintenance providers, and parts distributors acquiring quantities of 10 kits or more. Direct contact with our commercial sales team is encouraged to discuss anticipated annual volume and supply agreement options.

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