Dongfeng KL truck part Ignition lock assembly with key assembly 3704010-C3300-HJ

The assembly features a fully integrated design: the lock body and key set are factory-matched to ensure perfect mechanical and electrical compatibility. The key assembly includes two durable metal keys (brass core with nickel plating) that are precision-cut to match the lock’s internal pin tumblers—ensuring smooth insertion, rotation, and extraction (no forced turning that damages pins). The lock body houses a 4-position electrical switch (Off-On-Acc-Start) that aligns with Dongfeng KL’s ignition system wiring, delivering power to the starter, fuel pump, and accessories in the correct sequence. Unlike aftermarket locks with mismatched keys, this integrated design prevents key breakage, tumbler jamming, and electrical misfires, ensuring reliable ignition every time

Engineered to protect Dongfeng KL trucks from theft and unauthorized access, the ignition lock assembly includes multiple security enhancements. The lock body’s outer casing is made of hardened steel (HRC 45–50) that resists drilling, prying, or hammering—common tampering methods. The internal pin tumbler system uses a unique, non-duplicable key profile (Dongfeng KL’s proprietary coding) that prevents unauthorized key copying without factory authorization. Additionally, the assembly integrates a mechanical steering lock that engages automatically when the key is removed, immobilizing the steering column to deter theft. Unlike basic ignition locks, this anti-theft design meets China’s automotive security standards (GB 15740-2006) and reduces the risk of vehicle theft by 90% compared to non-secured alternatives

Built to withstand the harsh conditions of commercial truck operation (vibration, temperature fluctuations, and frequent use), the assembly uses rugged materials. The lock body’s internal components (pins, springs, and electrical contacts) are made of corrosion-resistant stainless steel (304 grade) that resists rust from moisture or road salt. The key’s brass core ensures long-term durability (withstanding 10,000+ insertion/removal cycles without wear), while the nickel plating prevents tarnishing and improves grip. The electrical switch uses silver-plated copper contacts that maintain low resistance (≤ 50mΩ) even after 5,000+ start cycles, avoiding voltage drops that cause starter failure. Rigorous testing confirms the assembly operates reliably in temperatures ranging from -40°C to 85°C and endures 200,000+ vibration cycles (10–2,000 Hz) without performance issues

Designed for efficient replacement in repair shops or fleet yards, the assembly simplifies installation with user-friendly features. It comes with a pre-wired electrical connector that matches Dongfeng KL’s factory wiring harness—no cutting or splicing required (plug-and-play functionality). The lock body includes pre-aligned mounting tabs that snap into the steering column’s ignition cavity, and the included hardware (2 M6×12mm bolts) ensures secure attachment. Installation takes 25–30 minutes with standard hand tools, and the keys are ready for use immediately (no programming needed, as they are factory-coded). To guarantee quality, the assembly is manufactured in an IATF 16949 certified facility and undergoes strict testing: key operation validation, electrical continuity checks, anti-tamper resistance trials, and environmental durability tests. Backed by a 18-month warranty against manufacturing defects (e.g., key breakage, lock jamming, or electrical failure), it provides Dongfeng KL truck owners with reliable ignition performance and long-term security