BH6P120 Fuel Injection Pump – Longbeng Inline Power For Shangchai & Weichai Workhorses

The BH6P120 isn't just another code on an engine plate – it's the mechanical core of many Chinese-built construction machines, loaders and generator sets. As a Longbeng high-pressure inline fuel injection pump, BH6P120 is widely supplied for Shangchai / SDEC engines (D6114, H-Series) and Weichai WD615 / WD10 engines used in SDLG and other wheel loaders.

If you're rebuilding a loader, excavator or genset and the original pump tag shows BH6P120 or an SDEC number such as S00010459, this is the OE-pattern assembly you're looking for.

 

Catalogs and factory listings position the BH6P120 injection pump as a direct fit for several popular engine families:

SDEC / Shangchai engines – including D6114ZGB, D6114, and H-Series SC7H230D2 / SC7H250D2 used in generator sets and industrial equipment.

Shanghai C6121 & 3306-type industrial engines used in excavators, wheel loaders and trucks.

Weichai WD615 / WD10 / WP10 powering SDLG and other wheel loaders and construction machinery.

That makes BH6P120 especially relevant for:

SDLG wheel loaders

Construction machinery fleets (cranes, loaders, graders)

Medium-output generator sets using Shangchai/SDEC engines

If your machine data sheet lists 612601080878 / 612601080917 / 612601080880 alongside BH6P120, those are typical loader kit numbers built around this same pump.

 

 

BH6P120 is a mechanical inline diesel fuel injection pump. Instead of electronics and rails, it relies on:

Six plunger-and-barrel elements driven by a hardened camshaft

A mechanical governor coordinating fuel delivery with engine speed

Precisely ground delivery valves and fuel galleries for stable pressure

Longbeng / Longkou production focuses on high-pressure inline pumps for heavy equipment; the BH6P120 is described as a "genuine Longbeng injection pump" with 12.0 kg net weight, supplied 1 pc/box and tested for reliable quality and stable performance.

For operators this means:

Predictable starting, even after long storage

Robust operation on varying diesel quality

Simple mechanical diagnostics without laptop tools

 

1. OE-pattern fit and geometry
Mounting flange, gear drive, fuel inlets and outlet positions all mirror the original BH6P120 pump used by Shangchai and Weichai, so it bolts directly to D6114, C6121 and WD615 blocks with no bracket modifications.

2. Stable fuel delivery for heavy loads
Each plunger is matched on the test bench so cylinders receive closely balanced quantities, which is crucial for wheel loaders and gensets that sit at constant high load for long periods.

3. Durable construction for construction sites
The pump body and internal components are engineered to withstand dust, vibration and long hours. Genuine-spec units are usually supplied 100% new with a 3–6 month warranty, depending on the brand and distributor.

4. Cost-effective vs. full electronic conversion
In markets where fuel quality and service infrastructure are variable, keeping a robust mechanical inline system like BH6P120 is often more economical than switching to complex common-rail setups.

 

 

You can present the essential data like this:

Product name: BH6P120 High-Pressure Fuel Injection Pump
Type: Mechanical inline diesel injection pump
Brand: Longbeng / Longkou or equivalent OE-pattern manufacturer
Applications:
– SDEC / Shangchai D6114ZGB, D6114, H-Series SC7H230D2, SC7H250D2
– Shanghai C6121 industrial engines
– Weichai WD615 / WD10 / WP10 for SDLG and other loaders
Net weight: approx. 12.0 kg
Condition: 100% new, fully assembled and tested, packed 1 pc/box

 

A wheel loader that cranks a long time cold and blows black smoke when lifting – fresh BH6P120 restores injection pressure and timing consistency.

A site generator with a D6114 engine that hunts on load – a new pump reduces cylinder imbalance and stabilises rpm.

A fleet overhaul program where several WD615-powered machines are refreshed at the same time – using the same BH6P120 specification simplifies parts stocking and maintenance planning.

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