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Engine quality checks and a clear 1-year warranty
Every engine is checked before it leaves Zhengzhou. Major components carry a 1-year warranty, and the rules below say exactly what is covered, what is not and how to make a claim.
- 1 yearWarranty on major components
- Every engineChecked before shipment
- ISO 9001and IATF 16949 certified
- Since 1998In the engine business
What does the NANXI POWER engine warranty cover?
NANXI POWER engines carry a 1-year warranty on major components: breakage of the camshaft, crankshaft, connecting rod or valve not caused by external force, and sand (casting) defects in the cylinder block or cylinder head. The period starts on the date the warranty is activated.
If a covered quality fault appears, we repair or replace the faulty components free of charge. Contact our after-sales technical support before any disassembly.
Checked and recorded before shipment.
A claim costs everyone time. So every engine goes through the same checks before it is packed, and the records stay with your order.
- Version checkThe engine is matched to your engine code or VIN and the agreed configuration.
- Visual inspection recordsPhotos are taken before packing and kept for your confirmation and warranty reference.
- Component integrity checkKey components and the included parts are checked against the quotation.
- Serial number verificationThe engine number is checked and recorded with your order.
Covered and not covered.
From the NANXI POWER Engine Warranty Management Regulations of Zhengzhou Nanxi Engine Co., Ltd.
Covered for 1 year
1year · major components
Starting on the date the warranty is activated. Quality faults are repaired, or the faulty components replaced, free of charge.
- Camshaft breakage not caused by external force
- Crankshaft breakage not caused by external force
- Connecting rod breakage not caused by external force
- Valve breakage not caused by external force
- Sand (casting) defects in the cylinder block or cylinder head
Not covered
- Cylinder head gasket damage from overheating caused by inferior antifreeze, tap water or faulty cooling-system pipes and accessories
- Abnormal wear caused by inferior engine oil or oil filters
- Oil consumption caused by inferior air filters or dirty intake air
- Failures caused by improper installation by the repair station or improper use by the customer
- Engines disassembled without authorization from our after-sales technical support
- Indirect losses arising from a fault
How to make a warranty claim.
The most important rule: do not open the engine before our after-sales technical support has authorized it.
Stop and contact us
Stop the engine and contact our after-sales team by WhatsApp or email.
Send the evidence
Engine number, a description of the fault, photos and videos, installation photos and maintenance records.
Get authorization
Our technical support reviews the case and authorizes any disassembly or repair.
Repair or replacement
Covered quality faults are repaired or the faulty components replaced free of charge.
Keep the installation photos and the receipts of the first and regular services: they are the records a claim is decided on.
First-use care for a new engine.
From the multilingual operating manual supplied with our engines. The vehicle or engine manual decides the details.
01
Respect the break-in
- About the first 1,000–2,000 km, before the first service
- Generally stay below 70% of rated engine speed
- No sudden acceleration or long full-load driving
02
Service it early
- First service at 500–1,000 km: engine oil and oil filter
- Then every 5,000 km: oil, oil filter and air filter
- Use the oil grade the manual recommends
03
Clean fuel and air
- Qualified fuel from reputable stations
- Check the air filter often during break-in
- Replace it earlier in dusty conditions
04
Start and stop gently
- Idle 1–3 minutes after a cold start, longer in winter
- Idle 1–2 minutes before stopping a turbo engine
- Check oil and coolant daily; avoid long idling
Warranty questions
Answers based on the NANXI POWER warranty regulations.
How long is the warranty on a NANXI POWER engine?
Major components are covered for 1 year: breakage of the camshaft, crankshaft, connecting rod or valve not caused by external force, and sand defects in the cylinder block or cylinder head.
When does the warranty period start?
On the date the warranty is activated. Keep the activation record together with the engine number and your purchase documents.
Can my workshop open the engine to find the fault?
Only after our after-sales technical support has authorized it. Warranty service is not provided for an engine disassembled without authorization.
What does NANXI POWER do when a covered fault is confirmed?
We repair the engine or replace the faulty components free of charge. Indirect losses caused by the fault are not covered.
Why is a blown head gasket from overheating not covered?
Overheating caused by inferior antifreeze, tap water or faulty cooling-system pipes and accessories is a cooling-system problem, not an engine quality fault. Use the coolant the vehicle manual specifies and check the cooling system at installation.
When should a new engine have its first service?
At 500–1,000 km, with new engine oil and a new oil filter. After that, service every 5,000 km with oil, oil filter and air filter, and keep the receipts for warranty.
Before and after installation.
Practical guides from our news and insights section.
Questions about quality or a claim?
Send the engine number, photos and a short description. Our after-sales technical support will reply with the next step.