Shandong Shengyue Technology Development Co.,Ltd is one of the most professional dongfeng lng/cng cummins 15n z15n series natural gas engine ignition coil guide extension cord c5557961 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
Dongfeng LNG/CNG Cummins 15N Z15N Series Natural Gas Engine Ignition Coil Guide Extension Cord C5557961
Key Functions
1. High-voltage insulation: Prevents the high-voltage electricity (tens of thousands of volts) generated by the ignition coil from leaking, arcing, or conducting to the metal cylinder head.
2. Sealing and protection: Blocks engine oil, moisture, and dust from entering the spark plug well, thereby preventing ignition failures.
3. Stable conduction: Ensures the high-voltage electricity is transmitted intact to the tip of the spark plug.
Compatible with mainstream vehicle models
Foton Daimler: Auman GTL, Auman Galaxy, EST, and other 15N natural gas heavy-duty trucks.
Dongfeng Commercial Vehicle: Dongfeng Tianlong KX/KL natural gas tractor trucks.
Shaanxi Automobile (Shacman): Delong series models equipped with Cummins 15N engines.
Common Failure Symptoms
1. Rubber aging and cracking: Prolonged exposure to high temperatures causes the boot to become brittle and crack, leading to engine misfires, vibration, and sluggish acceleration.
2. Electrical leakage/flashover: Black carbonized tracking marks (flashover) are visible on the boot surface, preventing the spark plug from firing correctly.
3. Internal spring corrosion: Water ingress or oil seepage into the spark plug well causes poor spring contact.
Ignition System Maintenance BOM (Bill of Materials) - Cummins 15N Engine
| Item | Part Name | Core OEM Part No. | Specifications & Functional Description | Unit | Qty (Full 6-Cylinder Repl.) | Recommended Replacement Reason |
|---|---|---|---|---|---|---|
| 01 | Ignition Coil Guide / Boot | C5557961 / 5557961 | Fluorosilicone high-voltage extension lead, connecting the coil to the spark plug. | Pcs | 6 | Core failure component; must be replaced due to rubber aging or flashover leakage. |
| 02 | NG-Specific Spark Plug | 5557905 / 5575905 | Iridium-Platinum resistor type, specific for China VI 15N engines. | Pcs | 6 | Boot leakage often causes spark plug ablation or carbon buildup; recommended to replace as a complete set. |
| 03 | Ignition Coil Assembly | 5581254 / 5443217 | Overhead independent Coil-on-Plug (COP) for the cylinder head. | Pcs | 1 ~ 6 (Subject to testing) | Boot leakage can backward-break the coil. Replace if resistance is abnormal or the casing is cracked. |
| 04 | Valve Cover Gasket | 5691024 (15N Exclusive) | Main rubber sealing gasket for the top of the cylinder head. | Pcs | 1 | Removing the coil and guide requires lifting the valve cover; the old rubber gasket warps under high heat and cannot be reused. |
| 05 | Spark Plug Tube Seal | 5557912 (Or included with valve cover gasket) | Independent spark plug tube O-ring / seal. | Pcs | 6 | Prevents engine oil from seeping into the spark plug tube, avoiding short circuits caused by oil immersion. |
| 06 | Low-Voltage Ignition Connector | Universal Cummins Ignition Plug | Low-voltage input connector for the ignition coil (with locking clip). | Pcs | As Needed (Spare) | Engine bay high temperatures make the stock plastic plugs highly brittle; highly recommended as spares during repair. |
| 07 | Dielectric Grease / Paste | Dedicated Electrical Insulating Grease (e.g., Loctite / Molykote) | Insulating and moisture-proof silicone grease applied inside both ends of the boot. | Tube | 1 | Auxiliary material. Applied to the spark plug ceramic body to prevent future binding and enhance insulation. |
DETAILS
| DESCRIPTION | Ignition Coil Guide Extension Cord | PART NUMBER | C5557961 |
| WEIGHT | 5kg | VOLUME | 40 cm × 30 cm × 20 cm |
| TRUCK MOLDE | CUMMINS | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Hot Tags: dongfeng lng/cng cummins 15n z15n series natural gas engine ignition coil guide extension cord c5557961, manufacturers, suppliers, factory, parts, genuine, original
