Product Specifications
| Parameter | Details |
|---|
| Part Name | Rocker Arm Assembly |
| Part Number (OEM Reference) | 3052170, 3052170RX, 3047479 |
| Brand Compatibility | Cummins, John Deere |
| Machine Model Fitment | Cummins: NT855, N14, NH855, G855, CM558, NTA855A
John Deere: 6810, 6910 |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Packaging | Individual protective packaging with anti-rust coating, sealed carton box |
Compatible Models
| Brand | Applicable Models |
|---|
| Cummins | NT855, N14, NH855, G855, CM558, NTA855A |
| John Deere | 6810, 6910 |
Tired of Engine Downtime from Failed Rocker Arms? Get the 3052170/3047479 Rocker Arm Assembly for Cummins NT855 N14 & John Deere 6810
Every hour your excavator or agricultural tractor sits idle due to a failed rocker arm costs hundreds — sometimes thousands — in lost productivity and repair delays. Counterfeit or low-grade rocker arms crack under load, cause valve train misalignment, and trigger costly secondary failures. OEM replacements mean waiting 3+ weeks while your fleet stalls. You need precision-engineered parts that fit right, perform reliably, and ship fast — not compromises.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This rocker arm assembly is manufactured in ISO 9001-certified factories, fully tested before shipment for lift accuracy, pivot wear resistance, and material integrity. With 10 years of global export experience and over 10,000 engine-related SKUs in stock, we supply direct replacement parts for heavy-duty diesel engines used in excavators, loaders, and farm tractors — no guesswork, no delays. The 3052170 rocker arm assembly delivers consistent valve timing and durability across high-load cycles.
Where This Part Works
These rocker arms operate under continuous thermal cycling and mechanical stress in demanding environments — quarry crushing operations, large-scale farming with John Deere 6810 tractors, and municipal infrastructure projects using Cummins-powered equipment. In mining or port logistics fleets, failure of this component leads directly to cylinder misfires, reduced torque output, and unplanned shutdowns. Choosing a verified replacement like this 3047479 engine part for NT855 ensures stable combustion and long service intervals.
Engineering Details That Matter
Forged alloy steel construction provides superior tensile strength and fatigue resistance compared to cast alternatives — critical for engines running 12+ hours daily. Precision-ground fulcrum surfaces maintain ≤0.02 mm tolerance to prevent uneven wear and premature lash loss. Heat-treated contact pads (HRC 52–56) resist pitting under repeated cam lobe impact. Surface-hardened roller tips reduce friction coefficient by 18% versus standard carbon steel, lowering operating temperature and extending life. All components meet SAE J431 G10500 material specification for heavy-duty valve train applications.
The Real Cost of Wrong Parts
A $45 counterfeit rocker arm may save upfront, but it often fails within 200 operating hours — triggering valve seat damage, bent pushrods, and head gasket leaks. Repair labor alone exceeds $1,200; downtime on a rental excavator averages $2,800/day. OEM parts cost 35–50% more and require 18–25 days lead time. Our 3052170 rocker arm assembly is engineered to OEM dimensional and metallurgical specs, validated per ISO 9001 process control, and backed by real-world field data from 120+ countries. Total cost of ownership drops significantly when you factor in reliability, warranty coverage, and same-week delivery.
Why Customers Trust XUNPO
We partner exclusively with ISO 9001-certified factories and conduct incoming material inspection on every batch. Every rocker arm assembly undergoes 100% functional testing — including pivot rotation torque, surface hardness verification, and dimensional QA — before release. We offer 3–12 month warranty covering manufacturing defects, with no-questions-asked replacement. Our 10-year track record includes shipments to 120+ countries, supported by a 20-person technical team fluent in engine systems across CAT, Komatsu, Cummins, and John Deere platforms. Over 10,000 engine parts are held in our Guangzhou warehouse — ready for same-day dispatch.
Packaging & Shipping
- Each assembly is individually wrapped in VCI anti-corrosion paper, secured in molded foam, and packed in reinforced corrugated cartons.
- 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.
- Minimum order quantity: 1 piece — designed for urgent maintenance and small-fleet operators.
Get Your Rocker Arm Assembly Now
Your machine isn’t generating revenue while waiting. Send us the part number (3052170 or 3047479), your engine model (e.g., Cummins N14 or John Deere 6810), and required quantity — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for physical verification. With Guangzhou warehouse stock and express options, your replacement arrives before the next scheduled service window.
Frequently Asked Questions
Q: Is this an original Cummins or John Deere part?
A: No — it is an OEM-equivalent aftermarket part, produced in ISO 9001-certified facilities to match OEM specifications for fit, form, and function.
Q: How do I confirm this fits my exact engine?
A: Provide your engine serial number, machine model, and current part number — our technical team verifies compatibility and responds within 2 hours.
Q: What is the warranty period?
A: 3–12 months depending on application, covering defects in materials and workmanship. Replacement or refund issued without delay.
Q: What is the minimum order quantity?
A: 1 piece — no bulk requirement. Ideal for emergency repairs and small workshops.
Q: How soon will my order ship?
A: In-stock items ship within 2–5 working days. Express options available for urgent needs.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample for physical evaluation and fit-check prior to full order.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
