Block & Internal Parts
Rocker Arm Assembly Replacement for Cummins NT855 Same-Week Shipping
ISO Certified Quality Assured
2-5 Day Ship Fast Dispatch
3-12 Mo. Warranty
Block & Internal Parts 3052170 Assembly State Cummins NT855 Compatible

Rocker Arm Assembly Replacement for Cummins NT855 Same-Week Shipping

Rocker Arm Assembly 3052170 / 3047479 — replacement for Cummins NT855, N14 and compatible John Deere engines, new aftermarket condition.

  • Stocked in Guangzhou for same-week dispatch on this high-failure valve-train component; MOQ 1 piece, no bulk requirement blocking your emergency order
  • Fitment confirmed from part number, engine model, or nameplate photo when the plate is worn unreadable
  • Express, air and sea freight options quoted before you commit so arrival timing is clear

Single-piece orders ship within days from warehouse stock — lead time confirmed at quote.

Key Highlights

  • Fits CAT, Komatsu, Hitachi, Volvo, Hyundai, Doosan, Kobelco, Sany, XCMG & more
  • Sourced from ISO-certified factories with strict QC inspection
  • MOQ = 1 piece · In-stock items ship in 2-5 working days
  • 3-12 month warranty · 24-hour quotation guarantee
Ships from Guangzhou
120+ countries served
MOQ: 1 piece
Quote in 24 hours

Single-Piece Dispatch — Guangzhou warehouse holds Rocker Arm Assembly 3052170 3047479 for Cummins NT855 and N14 engines, shipping the same day an order clears fitment confirmation.

Technical Specifications

Parameter Value
Part Number 3052170 3047479
Cross-Reference 3052170 (reference only), 3052170rx (reference only), 3047479 (reference only)
Machine Fitment NTA855A, N14, G855, CM558, NH855, NT855, John Deere 6810, John Deere 6910
Product Type Rocker Arm
Assembly State Assembly
Condition New Aftermarket
Warranty 3–12 months against manufacturing defects
Minimum Order 1 piece
Quality Standard ISO 9001

Application Suitability

Failure Symptom Replacement Urgency
Excessive valve lash that won't hold adjustment after reshimming Immediate — machine cannot sustain load without correct valve timing
Ticking or clattering noise from valve cover at idle and under load High — indicates rocker contact face wear progressing toward cam lobe damage
Visible scoring or spalling on rocker arm roller or pad surface High — metal debris enters lubrication circuit, risking bearing damage
Bent or fractured rocker arm discovered during valve cover inspection Critical — engine must not run until valve train is restored
Uneven cylinder compression traced to incomplete valve closure Immediate — affects combustion efficiency and exhaust temperature

What Arrives Before the Machine Can Move Again

A verified Rocker Arm Assembly 3052170 3047479 leaves Guangzhou within hours of fitment confirmation, not days.

When an excavator or loader sits idle on a job site because the valve train failed, every hour of downtime carries a cost that compounds quickly. Waiting for a supplier to confirm whether a part number is still valid, whether a superseded number fits, or whether the minimum order allows a single emergency piece — that waiting is where projects stall [NEED_CITE: mobile equipment downtime cost modeling for contractor fleets]. A worn or painted-over nameplate makes the situation worse; guessing at the engine variant and ordering the wrong rocker arm means another round of shipping and more days lost. The Rocker Arm Assembly 3052170 in stock fast shipping replacement workflow here starts with whatever identification the buyer can provide — a part number, an engine model, or a photograph of the nameplate — and moves to dispatch once fitment is locked.

Rocker Arm Assembly 3052170 3047479 for Cummins NT855 N14 valve train replacement

How Fitment Gets Confirmed Before the Box Ships

A replacement rocker arm assembly for Cummins NT855 or N14 engines must match the specific engine build, because variant differences within the 855 and N14 families affect valve train geometry. The process begins when the buyer sends a part number, an engine serial, or a photo. Our technical team cross-references the identifier against known superseded numbers and variant applications, then confirms whether the assembly fits the exact engine configuration on the buyer's machine. This step prevents the most common cause of emergency-order failure: a part that is dimensionally close but functionally wrong for that serial range.

What Determines Arrival Timing

Once fitment is confirmed, the Rocker Arm Assembly 3052170 3047479 ships from Guangzhou via the method the buyer selects. Express courier delivers to most international destinations within a typical window suitable for emergency breakdowns. Air freight serves larger orders or heavier consolidated shipments where cost per kilogram matters more than absolute speed. Sea freight is available when the machine is not yet down but the buyer is restocking [NEED_CITE: international freight mode selection criteria for heavy equipment parts]. Dispatch timing and arrival estimates are quoted before the buyer commits, so there are no surprises about when the part reaches the workshop or job site.

Reading the Specification Sheet for This Assembly

The assembly state means the rocker arm arrives with its shaft, bushings, and fasteners pre-matched — not as individual components requiring bench assembly. This reduces installation time and eliminates the risk of mixing mismatched wear tolerances between new and reused sub-components. The new aftermarket condition indicates manufacturing to dimensional specifications that align with the original design envelope for Cummins NT855 and N14 valve trains, including John Deere 6810 and 6910 applications that share the same base engine platform. ISO 9001 production oversight ensures batch consistency across orders, which matters when a fleet operator sources rockers for multiple machines at different intervals.

Rocker arm assembly shaft and bushing detail showing pre-matched components

The Hidden Cost of Ordering the Wrong Rocker Arm

A rocker arm that is close but incorrect does not simply fail to fit — it may install partially, run for a short period, and then cause secondary damage to the camshaft lobe, valve stem, or crosshead before the fault becomes obvious. By that point the repair scope has expanded from a single valve-train component to a top-end overhaul. The downtime window doubles or triples, and the freight cost for the replacement order is now a small fraction of the total loss [NEED_CITE: valve train failure propagation in heavy-duty diesel engines]. Confirming fitment from an engine serial number or nameplate photograph before dispatch is the control point that prevents this cascade.

Why Buyers Source This Part Here

Guangzhou warehouse stock on Rocker Arm Assembly 3052170 3047479 means common Cummins NT855 and N14 valve-train items are ready for same-day dispatch rather than built to order. A single-piece minimum order removes the barrier that blocks emergency purchases from suppliers requiring bulk commitments. Part identification from a photograph works when the nameplate is corroded, painted over, or missing entirely. Cross-reference verification covers superseded and alternate numbers so that an older reference on a worn tag still resolves to the correct current assembly. Technical support confirms compatibility before the order ships, not after it arrives and fails to fit.

Documentation & Verification

  • Commercial invoice listing part number 3052170 / 3047479 with engine fitment noted
  • Cross-reference sheet mapping superseded rocker arm numbers (reference only)
  • Dimensional inspection record verifying shaft diameter and bushing clearance
  • Warranty terms document stating coverage period against manufacturing defects
  • Packing photographs showing assembly condition before crate closure
  • HS code and export documentation for customs clearance at destination

Stock, Shipping & Arrival

  • Rocker Arm Assembly 3052170 3047479 held in Guangzhou inventory for immediate picking
  • Express dispatch available for single-piece emergency orders with tracking provided at collection
  • Air freight quoted with transit days for consolidated shipments exceeding courier weight limits
  • Packaging designed to survive courier handling without shaft or bushing damage
  • Arrival window stated in quotation so buyers can schedule technician availability

Request a Fitment Check and Dispatch Quote

Provide the engine model, serial number, or a clear photograph of the nameplate so the technical team can verify whether Rocker Arm Assembly 3052170 or 3047479 matches your specific Cummins NT855, N14, or compatible John Deere build. State the delivery location and required arrival window to receive freight options with transit estimates. Single-piece orders and consolidated shipments are both accepted.

Frequently Asked Questions

Q: Is Rocker Arm Assembly 3052170 / 3047479 in stock and when can it ship? A: This assembly is stocked in the Guangzhou warehouse for Cummins NT855, N14, and compatible John Deere 6810 / 6910 applications. Once fitment is confirmed against your engine serial or nameplate photograph, dispatch can occur the same day. Express, air, and sea freight options are available depending on your location and urgency.

Q: Can I order just one piece for an emergency repair? A: The minimum order quantity is one piece. There is no bulk requirement blocking a single emergency replacement. This matters when a machine is already down on site and waiting for a valve-train component to restore operation.

Q: How do I confirm fitment if my engine nameplate is worn or unreadable? A: Send a photograph of whatever identification remains — even a partial serial, a casting number on the block, or the machine model plate. The technical team cross-references this against known engine build records to identify the correct rocker arm assembly for your specific variant.

Q: How long does delivery take to my country by express or air freight? A: Transit time depends on destination and the shipping method selected. Express courier typically reaches international workshops within a window suited to emergency breakdowns, while air freight serves larger consolidated orders. Exact arrival estimates are quoted before you commit to the order.

Q: What happens if the part I receive does not fit? A: Fitment is verified against your engine serial or nameplate data before dispatch to prevent this situation. If a mismatch occurs despite verification, contact the team immediately with installation photographs so the issue can be resolved under the warranty terms covering manufacturing defects.

Compatible Brands & Models

CAT
Komatsu
Hitachi
Volvo
Hyundai
Doosan
Kobelco
Sany
XCMG
Liebherr
JCB
Case

Not sure if this part fits your machine? Send us your machine model number and serial number via WhatsApp or email -- our specialists will verify compatibility within 2 hours.

Shipping Information

  • In-Stock Items: Dispatched within 2-5 working days from Guangzhou warehouse
  • Shipping Methods: DHL, FedEx, UPS, sea freight, air freight -- flexible options for all destinations
  • Coverage: Ships to 120+ countries worldwide with real-time tracking
  • MOQ: 1 piece -- no minimum order requirement

Warranty & Quality

  • Warranty: 3 to 12 months depending on part type
  • QC: Strict quality inspection at ISO-certified partner factories
  • Samples: First-time buyers can request samples before bulk orders
  • Support: 24/7 post-delivery technical assistance via WhatsApp & email
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