Rocker Arm Assembly 3052170 3047479 for Cummins NT855 NH855 CM558 G855 N14 John Deere 6810 6910 Engine
Get reliable engine performance back with this Rocker Arm Assembly for Cummins...
Single-piece orders ship without batch minimums blocking emergency field repairs.
Spot Stock Ships Fast — Guangzhou warehouse holds Isuzu-compatible push rod references for same-day dispatch, and a single unit moves out without waiting for batch approval.
| Parameter | Value |
|---|---|
| Part Number | 8-97071673-0 |
| Cross-Reference (reference only) | 8-97071673-0, 8970716730, 8-94143202-0, 8941432020, 8-97071673-1, 8970716731 |
| Machine Fitment | 4JA1, 4JB1, 4JC1, 4JG1, 4JG2, 4JH1, UM4JA1, UM4JB1, UM4JG1, NHR, NKR, NKR55, NKR66, NKR69, NKR71, NKR77, NLR, NLR55, NLR71, NLR77, NLR85, NMR, NMR55, NMR71, NMR77, NMR85, NPR, NQR, QKR, TFR, TFS, UBS, UCS |
| Product Type | Push Rod |
| Material | SAE 5140 alloy steel |
| Surface Treatment | Heat-treated to HRC 48–52 |
| Diameter Tolerance | ±0.01 mm |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| MOQ | 1 piece |
| Standards | ISO 9001 |
| Failure Symptom | Replacement Urgency |
|---|---|
| Ticking or clicking noise from valve cover at idle | Immediate — indicates bent or worn push rod affecting valve timing |
| Loss of compression on one cylinder after valve train inspection | Urgent — machine cannot return to service until valve actuation restored |
| Visible scoring or galling on push rod tip or ball end | Scheduled — plan replacement before next scheduled service window |
| Engine misfire traced to insufficient valve lift | Immediate — affects fuel delivery and exhaust cycle on the affected cylinder |
One push rod is often the only thing standing between a downed truck and a three-week OEM lead time.
When an Isuzu 4JB1 or NKR series unit goes quiet on a job site because of a single failed valve train component, the clock starts. Workshops in Southeast Asia often wait days just to confirm whether a worn part number still maps to an available reference, then face batch minimums that make no sense for a one-cylinder repair. The result is a machine sitting on the lift while a full set gets shipped from overseas. [NEED_CITE: aftermarket parts lead time impact on commercial vehicle uptime] A Push Rod replacement in stock fast shipping changes that equation entirely — the part leaves the Guangzhou warehouse within the same working day, tracking number issued before the carrier door closes.
Getting the right push rod to a site supervisor in Jakarta or Manila starts with confirming the reference, not with waiting for a clean nameplate. Many Isuzu 4JA1 and 4JG1 engines in field service have had their identification plates painted over or damaged by heat and vibration. Our desk confirms fitment from an engine model, a chassis code like NKR55 or NPR, or even a photograph of the old part alongside a ruler for scale. Once the cross-reference is verified — whether the original stamping reads 8-97071673-0 or the superseded 8-94143202-0 — the unit is pulled from shelf stock and packed for dispatch. Push Rod replacement in stock fast shipping means the confirmation and the shipment happen in the same conversation, not across three business days.
The gap between a part leaving Guangzhou and arriving at a repair bay in Cebu or Surabaya comes down to the shipping lane chosen at the point of order. Express courier services reach most Southeast Asian capitals within a matter of days, while air freight offers a middle ground for slightly larger consignments that still cannot wait for a sea sailing. We quote the expected arrival window at the time of order confirmation, not after the invoice is paid. Every Push Rod replacement in stock fast shipping consignment ships in individual protective packaging with anti-rust coating, so a single piece sent via express arrives in the same condition as one pulled from local shelf stock. [NEED_CITE: express versus air freight transit windows for ASEAN commercial vehicle parts]
SAE 5140 alloy steel gives this push rod the tensile strength needed to transfer cam lobe motion to the rocker arm across thousands of valve cycles without bending under load. Heat treatment bringing the surface to HRC 48–52 hardens both the ball end and the tappet contact face, which are the two points where concentrated friction wears softer materials down over time. The ±0.01 mm diameter tolerance ensures the push rod slides through the cylinder head guide without excessive clearance, which would allow lateral movement and accelerate guide bore wear. These three parameters together determine whether the part survives its first thousand hours or starts generating the same ticking noise that prompted the original removal.
Ordering a push rod that looks identical but carries a different length or ball end radius means the engine either will not assemble or will run with incorrect valve lash. A rod that is slightly too long holds the valve partially open at rest, leading to burnt seats and compression loss within the first operating shift. A rod that is too short introduces excessive lash, producing the same ticking noise that signaled the original failure and inviting the customer to conclude the replacement was defective. [NEED_CITE: valve train geometry tolerance effects on diesel engine combustion] The downtime cost of that misidentification compounds quickly when the machine is a quarry hauler or a port container handler with a daily output target.
Our Guangzhou warehouse stocks fast-failure valve train items across the Isuzu 4J engine family, so a single push rod request does not get queued behind a bulk order. The minimum order sits at one piece because emergency repairs do not come in sets of twelve. Part identification works from a part number, an engine model, a truck chassis code, or a photograph — whichever the buyer has available at the moment of breakdown. Cross-reference verification covers superseded numbers including 8-97071673-0 and 8-97071673-1, catching the alternate references that copied tables sometimes miss. Self-produced lines and qualified sourced supply carry identical warranty terms, so the buyer deals with one account regardless of origin.
Send the part number you have, the engine model stamped on the block, or a clear photograph of the old push rod next to a measuring tape. We will confirm whether the reference maps to 8-97071673-0 or one of its alternates, state the current stock position, and quote arrival timing based on your location — all before any commitment to purchase.
Q: Is this push rod in stock and when can it ship? A: We hold common Isuzu 4J series push rod references on shelf in our Guangzhou warehouse. When you confirm the exact reference, we verify physical stock and can dispatch within the same working day. A tracking number is issued once the parcel is handed to the carrier.
Q: Can I order just one piece for an emergency repair? A: Yes. The minimum order for this push rod is one piece. We do not require batch quantities for valve train components, because most field failures involve a single rod and the machine cannot wait for a full set to be assembled.
Q: How do I confirm the right part number when the nameplate is unreadable? A: Send us the engine model, the truck chassis code such as NKR55 or NPR, or a photograph of the worn push rod with a ruler for scale. We cross-reference against superseded numbers and confirm fitment before any order is placed.
Q: What are the shipping options and estimated arrival times? A: Express courier, air freight, and sea freight are all available. For a single push rod or a small urgent parcel, express courier is the standard choice. We quote the expected arrival window at the point of order confirmation based on your delivery address.
Q: What happens if the part I receive does not fit? A: Notify us with photographs of the part alongside the old unit and the engine serial number. We will verify whether a cross-reference error occurred and arrange a replacement or return under the warranty terms covering manufacturing and identification defects.
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.
Fill in your details and we'll respond within 24 hours with a competitive quote.
Explore more high-quality excavator and heavy equipment parts from XUNPO.
Get reliable engine performance back with this Rocker Arm Assembly for Cummins...
Connecting Rod for Yanmar 3TNA72, Forged 40Cr Steel, Anti-rust Passivation — replacement...
Stock availability and estimated arrival window quoted at time of order
Connecting Rod for Kubota V3307 V3307T, high-strength alloy steel, replacement for Kubota...