Product Introduction: A high-strength forged steel connecting rod, precision-machined with a hardened surface. It features a bronze bushing in the small end (for the piston pin) and a split big end (for the crankshaft journal).

Product Function: Connects the piston to the crankshaft, converting the piston’s linear reciprocating motion into the crankshaft’s rotational motion. It transmits the high combustion forces from the piston to the crankshaft, enabling the engine to generate torque and power the vehicle.

Engine Connecting Rod 5257364 – Premium Replacement for Cummins ISG, QSG and F Series Engines

When your fleet depends on Cummins ISG, QSG, or F Series power, every component inside that engine block needs to perform without compromise. The Engine Connecting Rod 5257364 sits at the heart of combustion force transfer — converting explosive energy into rotational motion thousands of times per minute. METTLEAD Truck Parts delivers this critical component with OEM-grade precision, factory-direct pricing, and the reliability your operations demand.

Why the 5257364 Connecting Rod Matters to Your Engine’s Lifespan

A connecting rod doesn’t just link the piston to the crankshaft — it absorbs and transmits tremendous cyclic loads at speeds exceeding 2,000 RPM. The Engine Connecting Rod 5257364 is engineered to withstand peak combustion pressures in Cummins ISG and QSG platforms, where cylinder pressures can reach over 200 bar. Any weakness in this component cascades into catastrophic engine failure, unplanned downtime, and costly rebuilds.

Features and Benefits of Engine Connecting Rod 5257364

• OEM-Equivalent Dimensional Accuracy: Manufactured to match original Cummins specifications for bore diameter, center-to-center length, and bearing journal tolerances — ensuring drop-in fitment without machining.
• High-Strength Forged Steel Construction: Crafted from micro-alloyed forged steel (C70S6 or equivalent grade), delivering superior fatigue resistance under high-frequency cyclic loading.
• Precision-Machined Bearing Surfaces: Big-end and small-end bores are finished to Ra 0.4–0.8 μm surface roughness, promoting optimal oil film retention and bearing longevity.
• Fracture-Split Design Compatibility: Designed for Cummins ISG/QSG fracture-split cap architecture, ensuring precise cap-to-rod mating and consistent clamping force.
• Weight-Matched for Multi-Cylinder Balance: Each rod is weight-graded to within ±4g, critical for smooth engine operation and minimizing vibration-induced wear.
• Corrosion-Resistant Finish: Protective surface treatment guards against oxidation during storage and transport, so the part arrives ready to install.

Technical Specifications

Application Scenarios – Where This Connecting Rod Performs

The Engine Connecting Rod 5257364 serves a wide range of heavy-duty and medium-duty applications powered by Cummins ISG and QSG platforms:

• Heavy-Duty Logistics Trucks: SINOTRUK SITRAK C7H and HOWO T7H models equipped with Cummins ISG12 engines for long-haul freight — where rods endure millions of load cycles across 500,000+ km service intervals.
• Construction and Mining Vehicles: Wheel loaders, mining dump trucks, and off-highway equipment running QSG12 engines under extreme torque loads and high ambient temperatures.
• Municipal and Utility Vehicles: City buses and sanitation trucks with Cummins F3.8/F4.5 engines, demanding consistent low-RPM torque delivery and long service life.
• Power Generation Sets: Stationary and mobile gensets using ISG/QSG platforms where 24/7 continuous operation demands components with zero tolerance for fatigue failure.
• Agricultural Machinery: High-horsepower tractors and harvesters utilizing Cummins F Series for seasonal peak-load performance.

Wherever a Cummins ISG, QSG, or F Series engine works, this connecting rod keeps the power flowing from combustion chamber to drivetrain — reliably, continuously, and efficiently.

OEM/ODM Capability – Your Brand, Our Engineering

METTLEAD doesn’t just supply parts — we partner with distributors and fleet operators who need flexibility:

• White-Label Packaging: Receive Engine Connecting Rod 5257364 in your own branded packaging with custom labels, barcodes, and documentation. Your brand identity stays front and center with your end customers.
• Custom Packaging Solutions: Whether you need bulk pallet packaging for workshop distribution or individual retail-ready boxes, we adapt to your supply chain requirements.
• Strict Quality Control: Every connecting rod passes through multi-stage inspection — dimensional CMM verification, magnetic particle flaw detection, weight grading, and surface finish measurement — before it earns a shipping label.
• MOQ Flexibility: From trial orders of 10 pieces to container-load volumes of 5,000+, our production lines scale to match your demand cycles.
• Technical Documentation Support: We provide installation guides, torque specifications, and compatibility charts that you can co-brand for your distribution network.

Client Success Story – Connecting Rod 5257364 in Action

In Q3 2024, a fleet maintenance company managing 180+ SITRAK C7H trucks across East African logistics routes faced recurring engine connecting rod failures at 350,000 km intervals — well below the expected 600,000 km service life. Their OEM supplier quoted 14-week lead times and premium pricing that strained their maintenance budget.

After sourcing the Engine Connecting Rod 5257364 from METTLEAD, they received their first batch of 200 units within 12 days. Independent metallurgical testing confirmed material hardness at 31 HRC and dimensional accuracy within 0.01 mm of OEM specifications. Over the following 9 months, zero connecting rod-related failures were reported across the fleet — extending effective service intervals beyond 620,000 km.

The procurement manager noted: “The 5257364 connecting rods from METTLEAD matched our OEM parts specification-for-specification. We reduced per-unit cost by 38% and cut our lead time from months to days. That’s real value for a fleet our size.”

Frequently Asked Questions – Engine Connecting Rod 5257364

Is the 5257364 connecting rod compatible with all Cummins ISG engine variants?

Yes. The Engine Connecting Rod 5257364 is designed to fit Cummins ISG11 and ISG12 engine platforms, as well as QSG12 and F Series (F3.8, F4.5). It matches the original fracture-split architecture and dimensional specifications across these engine families. Always verify against your engine serial number for confirmation.

What material is used, and how does it compare to the OEM connecting rod?

Our 5257364 rod uses micro-alloyed forged steel equivalent to C70S6 — the same material grade specified by Cummins for OEM production. This grade provides an optimal balance of tensile strength (850–1000 MPa), fatigue resistance, and machinability for fracture-split manufacturing.

Can I install this connecting rod without re-machining the engine block?

Absolutely. The Engine Connecting Rod 5257364 is finished to OEM bore dimensions and center-to-center length specifications. It’s a direct drop-in replacement — no line boring, honing, or machining adjustments required when paired with standard-size bearings.

How are your connecting rods quality-tested before shipment?

Each rod undergoes five-stage inspection: raw forging ultrasonic testing, post-machining CMM dimensional verification, magnetic particle inspection for surface and sub-surface flaws, weight grading within ±4g tolerance, and final visual inspection with surface roughness measurement. Rods that fail any stage are rejected — not reworked.

What is the recommended bolt torque specification for the 5257364 rod cap?

The fracture-split cap bolts (Class 12.9, torque-to-yield) should be installed following Cummins ISG service manual specifications: typically an initial torque of 60 Nm followed by a 90° angle turn. Always use new bolts during installation — torque-to-yield fasteners are single-use by design.

Do you supply matching connecting rod bearings with this part?

Yes. METTLEAD stocks standard and undersize connecting rod bearings compatible with the 5257364 rod assembly. Ordering rods and bearings together ensures matched tolerances and simplifies your procurement process. Browse our full Cummins engine parts catalog for complete availability.

What is the typical lead time for bulk orders?

Standard stock orders ship within 3–5 business days. Bulk orders (500+ pieces) or custom-packaged orders typically require 10–15 business days from order confirmation. We maintain safety stock of high-demand SKUs including the 5257364 to minimize wait times for recurring buyers.

Ready to Secure Your Supply of Engine Connecting Rod 5257364?

Downtime costs more than parts ever will. Whether you’re rebuilding a single engine or stocking your warehouse for fleet-wide maintenance, METTLEAD delivers the Engine Connecting Rod 5257364 with the quality, pricing, and speed your business requires.

• Factory-direct pricing — no middlemen, no markup layers
• Fast global shipping — DHL, FedEx, sea freight, or your preferred forwarder
• Flexible payment terms — T/T, L/C, Western Union, trade assurance
• Visitor-friendly facility — you’re welcome to inspect our quality systems in person

Send us your engine model, required quantity, and delivery destination. Our engineering team will respond within 12 hours with pricing, lead time, and shipping options tailored to your project.

Contact METTLEAD now to request your quote for Engine Connecting Rod 5257364

Explore our complete range of Cummins ISG, QSG, and F Series engine components — from pistons and liners to turbochargers and fuel injectors — in our Cummins Engine Parts category.