Product introduction
The Cummins G5271843 is perfectly compatible with the B5.9 and B6.7 series 12V diesel engines, and is a key component ensuring engine durability and power response. The 5.9 Cummins engine connecting rod, 6.7 Cummins engine connecting rod, and 12V Cummins engine connecting rods are specifically designed for Cummins B5.9 and B6.7 series 12V diesel engines, precisely matching cylinder bore, stroke, and crankshaft parameters to achieve zero-error coordination with the piston, crankshaft, and connecting rod bearings. It is the only OEM compatible solution for the 5.9 and 6.7 Cummins engine connecting rods.
Product Images
Product Parameters
| Parameter category | Detailed Description |
| Part number | G5271843 |
| Connecting rod length (center distance) | About 170 mm |
| The inner diameter of the large hole is | 69 mm |
| Inner diameter of the small head hole | 25 mm |
| Weight of a single piece | 1.3 ± 0.05 kg |
| Bolt torque specification | 85-95 N·m, tighten diagonally in three steps to ensure there is no relative displacement between the connecting rod cover and the rod body |
| Dynamic balance grade | G2.5 grade, with high-precision dynamic balance calibration before leaving the factory to reduce vibration during high-speed operation |
| Adaptation platform | Designed specifically for the B5.9 (5.9L) and B6.7 (6.7L) series 12V diesel engines, they are widely used in high-load scenarios such as Dongfeng Cummins heavy-duty trucks, construction machinery and generator sets, and are the core components of the engine power transmission system |
Product Advantages
The G5271843 connecting rod is made of forged alloy steel that meets the CUMMINS SPEC 10012 standard. After heat treatment and ultrasonic testing, it can withstand extreme working conditions such as burst pressure exceeding 180 bar and speed exceeding 2500 rpm. Its fatigue life far exceeds that of ordinary cast iron or castings, ensuring the reliability of long-distance transportation of heavy trucks and continuous operation of mining machinery.
FAQ
Q: 1. Can the G5271843 connecting rod be used in non-12V Cummins engines?
A:No. The G5271843 connecting rod is specifically designed for Cummins B5.9 and B6.7 series 12V diesel engines. Its structure, dimensions, and weight distribution are incompatible with 8V or other platforms. Forcing installation will result in power transmission imbalance and cause serious mechanical failure.
Q: 2. Can this connecting rod be replaced alone without replacing other parts?
A:No, it is not recommended to replace it alone. The G5271843 connecting rod must be replaced simultaneously with the original connecting rod bolts (G5271844) and connecting rod bushings (G5271845) to ensure assembly accuracy and dynamic balance. Otherwise, it will lead to abnormal bearing wear or connecting rod breakage.
Q: 3. Why must the original G5271843 connecting rod be used?
A:The original parts connecting rod uses high-strength forged alloy steel and G2.5 grade dynamic balancing process to ensure long-term stable operation under high pressure and high speed. Non-original parts, due to material and process defects, have a failure rate more than 60% higher and are not covered by Cummins warranty.
Q: 4. Does the G5271843 connecting rod require dangerous goods certification for export?
A:No, this connecting rod is a metal mechanical part, does not contain flammable, explosive, corrosive, or radioactive substances, and is not classified as a dangerous good. It does not require UN packaging or IMDG marking and can be declared and transported normally as ordinary mechanical parts.
Q: 5. What is the customs HS code for this product?
A:It is classified under HS code 8409, applicable to "parts intended or primarily used in engines listed in headings 8407 or 8408", applicable to the import and export declaration of all Cummins B5.9/B6.7 engine connecting rods.
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