One-stop auto parts supplier
0281005866 CNG Ignition Coil for WEICHAI Natural Gas Engine
Your Weichai gas bus or truck misfires? The 0281005866 Bosch ignition coil fixes it. This smart coil matches OEM specs and installs in minutes. Fits Weichai WP10, WP12 and Shangchai natural gas engines. Also replaces Weichai 612600191524. In stock — ships within 48 hours. Email info@rjtparts.com or WhatsApp (+86 17882454252) us for a quote.
Target Keywords: 0281005866 ignition coil, Bosch 0281005866, Weichai WP10 ignition coil, WP12 gas engine coil, 612600191524, Shangchai CNG ignition coil, Weichai natural gas parts, smart ignition coil
0281005866 CNG Ignition Coil for WEICHAI WP10 WP12 Natural Gas Engine | RJT PARTS
Product Overview
The 0281005866 ignition coil is a Bosch-designed smart coil built for Weichai 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 Weichai WP10 and WP12 gas engines, plus several Shangchai natural gas platforms.
RJT PARTS supplies the 0281005866 coil as a direct-fit aftermarket replacement. It matches the original Bosch 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.
Weichai WP10 and WP12 gas engines power thousands of buses and trucks across Africa, the Middle East, and Southeast Asia. For example, Ethiopia runs over 1,200 WP10NG buses, and Algeria operates nearly 5,000 Weichai-powered coaches. Therefore, demand for reliable replacement coils stays strong in these markets.
Cross-Reference Part Numbers
| Part Number | Brand | Notes |
|---|---|---|
| 0281005866 | Bosch | Primary OEM number, globally recognized |
| 612600191524 | Weichai | Weichai internal part number, same physical coil |
| 0 281 005 866 | Bosch | Spaced format of the same Bosch number |
| DQR2260B-M | Torch | Aftermarket equivalent |
Important: 0281005866 and 612600191524 are the same coil. Bosch manufactures it for Weichai, and both numbers appear on the product label. Order either number and you receive an identical part.
Compatible Engine Models
| Engine Series | Displacement | Power Range | Common Applications | Fuel | Coils per Engine |
|---|---|---|---|---|---|
| Weichai WP10NG | 10L | 260–380 HP | City buses, coaches, heavy trucks | CNG / LNG | 6 |
| Weichai WP12NG | 12L | 350–460 HP | Heavy trucks, intercity buses | CNG / LNG | 6 |
| Shangchai | Various | — | Buses, trucks, generators | CNG / LNG | 4 or 6 |
Common vehicle brands:
- Trucks: SHACMAN, HOWO, Foton, Dongfeng, FAW
- Buses: Yutong, King Long, Golden Dragon, Higer, Zhongtong
Diesel WP10 and WP12 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 | Smart Ignition Coil |
| OEM Number | 0281005866 (Bosch) |
| Weichai Number | 612600191524 |
| Cross Reference | DQR2260B-M (Torch) |
| Engine Make | Weichai (also Shangchai) |
| Compatible Models | WP10NG, WP12NG, Shangchai gas engines |
| Ignition System | Bosch / Woodward electronic control |
| Input Voltage | 24V DC (heavy-duty vehicle standard) |
| Output Type | High-voltage spark, smart coil with feedback |
| Mounting | Bolt-on, cylinder head mounted, one per cylinder |
| Connector | Bosch-spec electrical connector |
| Quantity per Engine | 6 (WP10/WP12) |
| Condition | New, aftermarket |
| Testing | 100% bench tested |
| Warranty | 6-12 months |
| Lead Time | 1–3 days (stock) |
Key Features
- Bosch smart coil technology. Built-in feedback signal confirms spark event to the ECM — no misfire goes undetected.
- Dual OE number coverage. One SKU replaces both Bosch 0281005866 and Weichai 612600191524.
- Broad platform fit. Covers Weichai WP10, WP12, and Shangchai natural gas engines.
- 24V heavy-duty design. Built for the electrical systems of large buses and trucks.
- Cost-effective. OEM-level performance at a lower aftermarket price point.
Failure Symptoms — When to Replace
- Engine misfire under load or at cruising speed
- Check engine light with misfire codes (P0300–P0306)
- Increased gas consumption (higher CNG/LNG usage)
- Rough idle or hesitation on acceleration
- Loss of power on gradients or with full loads
- ECM reports ignition coil feedback faults
- Visible cracks, carbon tracking, or burn marks on the coil body
Fleet tip: Weichai WP10NG buses running constant city cycles put heavy stress on ignition components. Replace all six coils during a major tune-up to avoid repeated roadside failures. 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 0281005866 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 bus fleets, truck operators, and distributors worldwide. We know that downtime costs revenue, so we keep the 0281005866 coil and its cross-references on the shelf year-round.
- Verified fitment. We cross-check every order against Bosch and Weichai part catalogs.
- One SKU, two numbers. Order this part and it covers both 0281005866 and 612600191524.
- 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 | Smart Ignition Coil |
| OEM No. | 0281005866 |
| Weichai No. | 612600191524 |
| Cross Ref. | DQR2260B-M (Torch) |
| Engine Brand | Weichai (also Shangchai) |
| Engine Model | WP10NG, WP12NG |
| Vehicle Brands | SHACMAN, HOWO, Foton, Yutong, King Long |
| Fuel Type | CNG / LNG (Natural Gas) |
| Ignition System | Bosch / Woodward |
| Voltage | 24V |
| Qty/Engine | 6 pcs |
| Condition | New Aftermarket |
| Warranty | 6-12 Months |
| MOQ | 1 pc |
| Shipping | DHL / FedEx / Air / Sea |
| Payment | T/T, PayPal, Western Union, Trade Assurance |
FAQ
Q: Is 0281005866 the same as 612600191524?
A: Yes. Bosch manufactures this coil for Weichai. 0281005866 is the Bosch part number, and 612600191524 is the Weichai internal number. Both refer to the identical coil.
Q: Does this coil fit a Weichai WP10 diesel engine?
A: No. The 0281005866 fits the natural gas (CNG/LNG) version of the WP10 and WP12 only. Diesel engines use compression ignition and do not require ignition coils.
Q: How many coils does a WP12NG engine need?
A: The WP10NG and WP12NG are both 6-cylinder engines, so they use 6 ignition coils — one per cylinder.
Q: Will this coil fit a Shangchai gas engine?
A: Yes. Several Shangchai natural gas engines use the same Bosch 0281005866 smart ignition coil. Confirm your original part number before ordering.
Q: What does “smart ignition coil” mean?
A: A smart coil includes a feedback circuit that sends a confirmation signal to the engine control module (ECM) after each spark event. This allows the ECM to detect misfires immediately and trigger a fault code if needed.
Q: What is the warranty?
A: 12 months from the date of delivery. We replace any coil that fails due to manufacturing defects.
Q: Do you ship to my country?
A: Yes. We ship worldwide, including Ethiopia, Algeria, Nigeria, Kenya, Vietnam, Thailand, Indonesia, Kazakhstan, and many more.
Request a Quote
Need the 0281005866 ignition coil for a Weichai WP10 or WP12 gas engine? RJT PARTS has it in stock and ready to ship. One SKU covers both Bosch and Weichai 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.
