KANGDA 2Q82 / BH2Q85R8 – Direct-Fit Fuel Pump For 2105ABX Diesel Power Units

Engineered for the 2105ABX industrial diesel platform, the KANGDA 2Q82 (BH2Q85R8) is a mechanically governed inline injection pump calibrated for 2300 RPM operation and 25 kW net output. This unit serves as a direct replacement for original equipment fitted to Lijia-brand engines, giving repair shops a dependable aftermarket option that maintains factory delivery pressure and timing curves. With a hardened plunger-and-barrel set and a compact camshaft housing, the pump ensures smooth idle behaviour, crisp throttle follow-through, and reduced exhaust haze under variable loading – qualities that matter most in stationary power and agricultural applications.

Factory-set for the 2105ABX naturally aspirated four-stroke cycle, this pump operates with a plunger diameter of 8.5 mm and a stroke length of 8 mm, driven by a 7.5 mm cam lift profile. At the rated 2300 RPM engine speed, the BH2Q85R8 generates peak injection pressures exceeding 60 MPa, with delivery valves configured to minimise injection lag. The built-in mechanical governor uses a flyweight-and-spring arrangement that restricts speed droop to 3.5% across the entire load band – from idling to full-rated 25 kW draw – which proves critical for generator sets and PTO-driven implements. Each KANGDA 2Q82 pump carries a laser-etched serial number on the mounting face for full traceability, and ships with pre-calibrated shims enabling dynamic timing adjustments without specialised fixtures. Additional fixed data includes a static injection timing of 12° BTDC at nominal speed, compatible with diesel fuels having cetane ratings between 45 and 52, and a flange bolt pattern that mirrors Lijia OEM specifications using M8 x 1.25 threaded high-pressure outlets.

Beyond the primary Lijia 2105ABX application, this KANGDA injection pump also covers numerous derivative engines found in irrigation pumpsets, 25 kVA standby generators, and small marine auxiliary plants. Its governor characteristic is tailored for constant-speed duty, making it a preferred replacement in construction site lighting towers and rental fleet power packs where load steps occur abruptly. European service centres frequently install this BH2Q85R8 when refurbishing Chinese 2105-series blocks, using it as a viable substitute for ageing Bosch or Delphi units with minimal timing adjustment. The pump's fixed delivery angle at 12° BTDC promotes knock-free combustion even with varying fuel quality, while the single 2Q82 part number replaces over fifteen distinct OEM references across Lijia, Changchai, and Yuchai variants – a distinct advantage for wholesalers aiming to streamline inventory without sacrificing coverage.

Though the BH2Q85R8 belongs to the conventional in-line pump family, its pressure-rise characteristics directly influence downstream behaviour when paired with unit injector conversions or rotary distributor retrofits. In partial common-rail adaptations – where an auxiliary supply pump feeds the rail – this KANGDA 2Q82 functions effectively as the low-pressure transfer stage, ensuring stable suction to the high-pressure pump inlet. In purely mechanical setups, the internal cam geometry delivers a pressure escalation rate of 0.8 MPa per degree of cam rotation, reducing ignition delay and audible knock – a clear advantage over worn Japanese-made equivalents. From a commercial standpoint, a full overhaul of this pump consumes roughly 2.3 shop hours, with rebuild kits priced nearly 40% below original-branded components, while still achieving 8,000 to 10,000 service hours before plunger barrel wear reaches the rejection threshold (defined by fuel spill-back exceeding 18% at full rack).

Q1: Does the KANGDA 2Q82 require any pipe bending when installed on a Lijia 2105ABX that previously ran a different pump brand?
A: No – the outlet port orientation (45° upward, centre-to-centre spacing of 18 mm) and flange offset are identical to Lijia drawing R212-03. Reuse existing pipes; only renew copper washers and the mounting O-ring.

Q2: Can this pump cope with B20 biodiesel in continuous generator service?
A: Yes – the nitrided plunger barrel achieves 62 HRC surface hardness, resisting the lower lubricity and higher viscosity of B20 blends. We advise shortening oil change intervals per fuel supplier recommendations.

Q3: What is the typical lead time for delivery to an EU workshop address?
A: Stocked items leave our warehouse within 48 hours. DDP shipping to most European destinations takes 5–7 business days; tracking and customs clearance are handled door-to-door.

Q4: How do I verify whether my existing pump has worn beyond economical repair?
A: Measure fuel spill-back at full rack with a graduated cylinder – if it exceeds 18% of the delivered volume per 1000 strokes, plunger/barrel wear is excessive. Also check governor spring free length against the 28.5 mm standard.

Q5: Does the factory test report include individual plunger delivery values?
A: Yes – every pump comes with a individual calibration sheet showing cc/200 strokes at three speed points, plus full-load rack position. This data assists with fine-tuning during first start-up.