Dongfeng Xinjiang X7 truck parts Left front bumper 8406021-TXGG01Y

Built to withstand road debris impacts (stones, gravel) and low-speed collisions common in Xinjiang’s mining/desert transport, the bumper is crafted from a high-performance PP+TPO composite (70% polypropylene, 30% thermoplastic olefin). This material delivers a notched Izod impact strength of 12 kJ/m² at -30°C (resisting cracking in frigid winters) and a flexural modulus of 1,800 MPa—stiff enough to retain shape under pressure yet flexible enough to absorb 80J of impact energy without permanent deformation. The composite is injection-molded with a 3mm-thick wall (reinforced to 5mm at high-stress areas like corners and tow hook mounts) and undergoes annealing at 80°C to eliminate internal stress. Compared to traditional steel bumpers, this design reduces weight by 35% (7.8kg vs. 12kg) while matching impact resistance—critical for balancing durability and fuel efficiency in long-haul operations (saving 2–3% fuel per 100km)

The bumper features a factory-grade multi-layer coating system tailored to Xinjiang’s harsh conditions (UV radiation, sandstorms, road salt):

Epoxy Primer (50μm): Bonds to the composite surface, blocking moisture and chemical intrusion.

Basecoat (80μm): Matches the X7’s cab paint via spectrophotometer testing (ΔE ≤1.5, ensuring color consistency) and provides scratch resistance (Mohs hardness ≥3H).

Acrylic Clearcoat (40μm): Adds UV protection (passing 3,000 hours of xenon lamp aging with ≤2% fade) and hydrophobic properties (water contact angle ≥90°), repelling rain and mud to reduce cleaning frequency.

The coating also resists road salt corrosion (passing 1,500 hours of neutral salt spray testing) and sand abrasion (retaining 90% gloss after 500 hours of sandblasting simulation)—critical for maintaining appearance and structural integrity in desert or winter conditions

Engineered to retain the X7’s original front-end functionality, the bumper includes pre-machined features for essential components:

Fog Light Cutout: A 160mm-diameter precision cutout (tolerance ±0.5mm) with built-in plastic brackets that directly fit the X7’s left front fog light (e.g., part No. 3732110-C33X701SY), eliminating the need for drilling.

Tow Hook Mount: A reinforced steel insert (12mm-thick S50C steel) embedded in the composite during molding, with an M20 threaded hole capable of withstanding 8,000kg of tow load—matching the X7’s factory tow capacity.

Lower Air Dam: An integrated 50mm-tall air dam along the bumper’s bottom edge that directs airflow to the radiator, improving cooling efficiency by 8% (critical for maintaining engine temperature in 45°C desert heat)

Designed for easy replacement by fleet technicians, the bumper simplifies installation with user-friendly features:

Hardware Included: The package contains 6 grade 8.8 high-strength M12×40mm bolts (zinc-plated for rust resistance) for frame attachment and 4 M6×16mm screws for fog light brackets—all pre-lubricated with anti-seize compound to prevent seizing.

Alignment Aids: Laser-etched reference lines on the bumper’s backside align with the X7’s front frame marks, reducing installation time by 50% (no measuring required).

Lightweight & Manhandleable: At 7.8kg, the bumper can be installed by one technician without lifting equipment, cutting total installation time to 45–60 minutes (vs. 90 minutes for steel bumpers).

Each unit undergoes dimensional inspection via CMM, impact testing, and coating adhesion checks, backed by a 24-month warranty against defects (cracking, paint peeling, mounting point failure)