One-stop auto parts supplier
1002570666 WECHAI Engine Parts Ignition Coil | CNG
The 1002570666 ignition coil (Torch R80725+W) is a direct replacement for Weichai WP13NG, WP15NG, and WP15H China VI-B natural gas engines. It powers SHACMAN X6000, Sinotruk HOWO Max, and FAW J7 CNG/LNG heavy trucks. Key benefits: stable ignition, no cylinder shake, reduced gas consumption, and resistance to torque limitation. Note: this coil fits China VI-B only — it does not interchange with the earlier 1003650711. RJT PARTS tests every unit before shipping, offers a 12-month warranty, and delivers worldwide in 3–7 days by express. Not sure if it fits? Send your old part number photo to info@rjtparts.com — we confirm within 24 hours.
Target Keywords: 1002570666 ignition coil, Weichai WP15 ignition coil, WP13 WP15 gas engine coil, Torch R80725+W, SHACMAN X6000 CNG coil, Weichai China VI-B natural gas parts, WP15H ignition coil
1002570666 Ignition Coil for WEICHAI WP13 WP15 China VI-B Natural Gas Engine | RJT PARTS
Product Overview
The 1002570666 ignition coil is the latest-generation spark unit for Weichai WP13 and WP15 China VI-B natural gas engines. It steps up low-voltage battery current into the high-voltage spark that ignites the CNG or LNG mixture inside each cylinder. This part fits WP13NG, WP15NG, and WP15H engines installed in SHACMAN X6000 and other premium heavy trucks.
RJT PARTS supplies the 1002570666 coil as a direct-fit aftermarket replacement. It matches the original electrical connector and mounting dimensions, so your technician installs it straight out of the box. Every unit passes bench testing for insulation resistance and spark output before we ship it.
This coil delivers stable ignition, prevents cylinder misfire and engine shake, reduces gas consumption, and resists torque limitation. Moreover, it withstands high temperatures and oil contamination — critical for engines running long hours under heavy loads. Weichai builds the WP15H as its flagship 15L gas engine with up to 600 HP, and the 1002570666 coil handles that power reliably.
Cross-Reference Part Numbers
| Part Number | Brand | Notes |
|---|---|---|
| 1002570666 | Weichai | Primary OEM number |
| R80725+W | Torch (火炬) | Aftermarket equivalent, same coil |
| 03211036 | Aftermarket | Third-party equivalent |
| 04031329 | Aftermarket | Third-party equivalent |
| 03231559 | Aftermarket | Third-party equivalent |
| 03291130 | Aftermarket | Third-party equivalent |
Important: 1002570666 fits the WP13/WP15 China VI-B natural gas engine only. It does not interchange with the earlier WP13 coil (1003650711, Torch R81326+W) or the WP10/WP12 coils (0281005866 / 1698-1231). Always confirm your engine displacement and emission standard before ordering.
Compatible Engine Models
| Engine Series | Displacement | Power Range | Common Applications | Fuel | Coils per Engine |
|---|---|---|---|---|---|
| Weichai WP13NG | 13L | 430–530 HP | Heavy trucks, tractors | CNG / LNG | 6 |
| Weichai WP15NG | 15L | 480–560 HP | Long-haul heavy trucks | CNG / LNG | 6 |
| Weichai WP15H | 15L | 530–600 HP | Premium heavy trucks, SHACMAN X6000 | CNG / LNG | 6 |
Common vehicle brands:
- Trucks: SHACMAN X6000, Sinotruk HOWO Max, FAW J7, Foton Auman Galaxy
Emission standard: China VI-B
Diesel WP13 and WP15 engines do not use this part. This coil fits spark-ignited natural gas (CNG/LNG) versions only. Diesel engines use compression ignition.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Name | Ignition Coil |
| OEM Number | 1002570666 (Weichai) |
| Cross Reference | R80725+W (Torch), 03211036, 04031329 |
| Engine Make | Weichai |
| Compatible Models | WP13NG, WP15NG, WP15H (China VI-B Natural Gas) |
| Input Voltage | 24V DC |
| Output Type | High-voltage spark, smart coil |
| Mounting | Bolt-on, cylinder head mounted, one per cylinder |
| Connector | Weichai-spec electrical connector |
| Quantity per Engine | 6 |
| Manufacturer | Xiang Torch (湘火炬), Zhuzhou |
| Condition | New, aftermarket |
| Testing | 100% bench tested |
| Warranty | 12 months |
| Lead Time | 1–3 days (stock) |
Key Features
- China VI-B compliant. Designed for the latest Weichai emission standard.
- Dual displacement fit. Covers both WP13 and WP15 (including WP15H) gas engines.
- Torch cross-reference. Replaces Torch R80725+W — a widely recognized aftermarket number.
- Fuel-saving design. Stable spark ensures complete gas combustion, reducing CNG/LNG consumption.
- Anti-torque-limit. Prevents ECM-triggered power reduction caused by misfire faults.
- Environmental sealing. Dust-proof, oil-resistant, and moisture-proof for harsh operating conditions.
Failure Symptoms — When to Replace
- Engine misfire under load or at highway speed
- Check engine light with misfire codes (P0300–P0306)
- Increased gas consumption (higher CNG/LNG usage)
- Rough idle or engine shake
- Loss of power or torque limitation triggered by ECM
- Hesitation on acceleration
- Visible cracks, carbon tracking, or burn marks on the coil body
Fleet tip: WP15H trucks running 150,000+ km per year put extreme stress on ignition components. Replace all six coils during a major tune-up to avoid repeated breakdowns on long routes. RJT PARTS offers discounted 6-coil engine sets.
Installation Notes
- Disconnect the battery before starting work.
- Remove the engine cover and any intake piping blocking the coil pack.
- Unplug the electrical connector from the faulty 1002570666 coil.
- Remove the hold-down bolt and pull the coil straight off the spark plug.
- Compare the old coil with the new unit to confirm matching dimensions and connector orientation.
- Apply dielectric grease to the inside of the new coil boot before installation.
- Seat the new coil and torque the mounting bolt to Weichai factory specification.
- Reconnect the harness and battery. Clear fault codes and start the engine to verify smooth operation.
Follow Weichai service manual lockout/tagout procedures for natural gas fuel systems before servicing.
Why RJT PARTS
RJT PARTS supplies engine replacement parts to truck fleets and distributors worldwide. We know that downtime costs revenue, so we keep the 1002570666 coil and its cross-references on the shelf year-round.
- Verified fitment. We cross-check every order against Weichai and Torch part catalogs.
- One SKU, multiple numbers. Order this part and it covers 1002570666, R80725+W, and related equivalents.
- Fast dispatch. In-stock orders leave our warehouse within 48 hours of payment.
- Flexible quantities. Order one coil for a repair or a full carton for fleet stock.
- Bulk discounts. Tiered pricing at 10, 50, and 100+ pieces.
- Worldwide shipping. DHL, FedEx, air freight, and sea freight to over 100 countries.
- Technical support. Send your engine nameplate or old part number — we confirm the match within 24 hours.
Custom Product Attributes
| Attribute | Value |
|---|---|
| Supplier | RJT PARTS |
| Part Name | Ignition Coil |
| OEM No. | 1002570666 |
| Cross Ref. | R80725+W (Torch), 03211036, 04031329 |
| Engine Brand | Weichai |
| Engine Model | WP13NG, WP15NG, WP15H |
| Emission Standard | China VI-B |
| Vehicle Brands | SHACMAN X6000, Sinotruk HOWO Max, FAW J7 |
| Fuel Type | CNG / LNG (Natural Gas) |
| Voltage | 24V |
| Qty/Engine | 6 pcs |
| Manufacturer | Xiang Torch (Zhuzhou) |
| Condition | New Aftermarket |
| Warranty | 12 Months |
| MOQ | 1 pc |
| Shipping | DHL / FedEx / Air / Sea |
| Payment | T/T, PayPal, Western Union, Trade Assurance |
FAQ
Q: Is 1002570666 the same as Torch R80725+W?
A: Yes. Torch manufactures the R80725+W as an aftermarket equivalent to the Weichai 1002570666 ignition coil. Both numbers refer to the same physical component.
Q: What is the difference between 1002570666 and 1003650711?
A: 1003650711 fits the earlier WP13 China VI natural gas engine (Torch R81326+W). 1002570666 fits the newer WP13/WP15 China VI-B engine (Torch R80725+W). They are not interchangeable.
Q: Does this coil fit a WP10 or WP12 engine?
A: No. The 1002570666 fits WP13 and WP15 China VI-B natural gas engines only. WP10 and WP12 engines use different coils.
Q: How many coils does a WP15H engine need?
A: The WP13 and WP15 are both 6-cylinder engines, so they use 6 ignition coils — one per cylinder.
Q: Will this coil fit a SHACMAN X6000 CNG truck?
A: Yes. The SHACMAN X6000 with Weichai WP15H natural gas engine uses the 1002570666 ignition coil.
Q: Does this coil fit diesel engines?
A: No. The 1002570666 fits natural gas (CNG/LNG) engines only. Diesel engines use compression ignition and do not require ignition coils.
Q: What is the warranty?
A: 12 months from the date of delivery. We replace any coil that fails due to manufacturing defects.
Request a Quote
Need the 1002570666 ignition coil for a Weichai WP13 or WP15 China VI-B natural gas truck? RJT PARTS has it in stock and ready to ship. One SKU covers Weichai, Torch, and related part numbers.
Send your part number, quantity, and destination country to info@rjtparts.com, or message us on WhatsApp for an instant quote. We reply within 24 hours.
📧 info@rjtparts.com
💬 WhatsApp: +86 17882454252
