Connecting Rod 719810-23100 for Yanmar 3TNE78 Engine – OEM-Replacement Grade

Product Specifications

Compatible Models

Tired of Engine Failure During Critical Excavation Cycles? Get the Right Connecting Rod 719810-23100 for Your Yanmar 3TNE78 or Komatsu 3D78AE Engine

Every unplanned engine shutdown on a construction site costs operators $2,000–$5,000 per day in idle labor, equipment rental, and delayed deadlines. Counterfeit or underspec connecting rods cause catastrophic crankshaft damage — often after just 120–200 operating hours. OEM replacements take 3–4 weeks to arrive, halting your entire fleet. And sourcing one part across multiple brands — like Yanmar 3TNE78 and Komatsu 3D78AE — means juggling five suppliers and risking mismatched specs.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This connecting rod 719810-23100 is manufactured in ISO 9001-certified factories and subjected to full pre-shipment performance testing — including tensile strength verification, dimensional tolerance checks, and surface hardness validation. With 10 years’ experience supplying Yanmar and Komatsu engine components globally, we ensure exact interchangeability during major overhauls on excavators like the PC27R-8 and compact loaders powered by the 3TNE78A. Over 10,000 SKUs in our Guangzhou warehouse mean this part ships within 2–5 working days — no waiting for production batches.

Where This Part Works

This connecting rod operates under high-cycle compression loads in earthmoving, quarrying, port material handling, and demolition applications — where engines run continuously at 2,200–2,600 RPM with frequent load spikes. In Komatsu PC27R-8 machines working on urban infrastructure projects, or Yanmar-powered mini-excavators in confined trenching sites, precise rod geometry and fatigue resistance directly determine whether an engine survives 8,000+ hours or fails prematurely at 3,200 hours. That’s why correct fitment matters — not just for function, but for total lifecycle cost.

Engineering Details That Matter

Forged 42CrMo alloy steel ensures yield strength ≥980 MPa and elongation ≥12%, critical for absorbing combustion shock without deformation. Each rod undergoes quench-and-temper heat treatment to achieve core hardness of 28–32 HRC — balancing ductility and wear resistance at the big-end bearing interface. Dimensional tolerances are held to ±0.015 mm on bore diameter and ±0.02 mm on center distance, guaranteeing zero interference with OEM crankshafts and pistons. The beam surface is shot-peened to induce compressive residual stress — increasing fatigue life by up to 40% compared to non-treated equivalents. All rods are coated with industrial-grade rust-inhibiting oil for long-term storage stability.

The Real Cost of Wrong Parts

A $42 counterfeit rod may save $18 upfront — but it typically fails before 2,500 operating hours, triggering $1,200 in labor for disassembly, $380 in new bearings and gaskets, and $4,500 in downtime for a mid-sized contractor. Genuine OEM parts avoid that risk but cost 35–48% more and require 18–25 days lead time — delaying project milestones and incurring penalty clauses. Our 719810-23100 meets all original Yanmar dimensional, metallurgical, and dynamic balance specifications (per ISO 1940-1 G2.5 grade). When factoring total ownership cost — including uptime, warranty coverage, and technical support — our replacement delivers 22% lower TCO over 5,000 hours than low-tier alternatives.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-rust oil, wrapped in EPE foam, and packed in double-walled corrugated cardboard boxes rated for 25 kg stacking load
• In-stock items ship within 2–5 working days after payment confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — selected per order volume and urgency
• Real-time tracking number provided upon dispatch, updated until final delivery
• MOQ is 1 piece — supporting urgent field repairs and small-batch rebuilds

Get Your Connecting Rod 719810-23100 Now

Your excavator won’t wait — and neither should your parts order. Send us your machine model, serial number range, and required quantity, and we’ll deliver a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk ordering. Every hour your Yanmar 3TNE78 or Komatsu 3D78AE engine sits idle, your project loses revenue — act now to restore productivity.

Frequently Asked Questions