The Wide-Body Cab Threshold is a premium quality trim set designed specifically for the Sitrak C7H heavy truck. This Wide-Body Cab Threshold includes front and rear door sills, sealing strips, and all necessary mounting hardware, ensuring a perfect fit and lasting protection. Engineered to withstand the rigours of daily commercial use, the Wide-Body Cab Threshold enhances the cab’s interior appearance while providing a durable barrier against dirt, moisture, and wear. For detailed specifications and compatibility, refer to the Sinotruk Catalog.
The Wide-Body Cab Threshold is manufactured from high‑quality materials that resist corrosion, UV degradation, and mechanical impact. Its precision‑moulded shape matches the cab contours, delivering a seamless integration that preserves the vehicle’s original design. Whether you are replacing worn components or upgrading to a more robust threshold system, this Wide-Body Cab Threshold offers an excellent balance of durability and aesthetic appeal. Each part in the set is tested for dimensional accuracy and surface finish to guarantee consistent quality.
Proper cab sealing and trim are essential for reducing noise, vibration, and harshness (NVH) levels, as well as preventing water ingress. The Wide-Body Cab Threshold not only improves the cabin environment but also protects the underlying metal structures from corrosion. With a service life designed to match the vehicle’s operational lifespan, this Wide-Body Cab Threshold is a cost‑effective solution for maintaining the integrity and comfort of your Sitrak C7H. Regular inspection of the threshold components is recommended to ensure they remain securely fastened and free from damage.
The Left front door threshold is a robust sill plate that covers the doorway edge on the driver’s side. As a key component of the Wide-Body Cab Threshold, it is moulded from impact‑resistant polymer with a non‑slip surface for safe entry and exit. Its design incorporates drainage channels to direct water away from the cab interior, reducing the risk of rust formation on the floor pan. The left front threshold is precision‑cut to match the specific contour of the Sitrak C7H cab, ensuring a snug fit that does not interfere with door operation.
The Right front door threshold is the symmetric counterpart for the passenger side, offering the same level of protection and comfort. This component of the Wide-Body Cab Threshold is identical in construction to the left side, providing uniform appearance and durability across both front doors. Its high‑grip surface pattern helps prevent slips, while the resilient material absorbs impact from foot traffic. The right front threshold also features integrated sealing edges that work with the door seal to maintain a tight closure.
The Left rear door threshold extends the protection to the rear left door opening, completing the comprehensive coverage of the Wide-Body Cab Threshold. This sill plate is engineered to accommodate the different geometry of the rear door, with specific cut‑outs for hinges and latches. Its durable construction resists chipping and scratching from cargo loading and unloading, making it ideal for mixed‑use applications. The left rear threshold is finished with a matching texture that harmonises with the front units, ensuring a cohesive interior look.
The Right rear door threshold mirrors the left rear unit, providing balanced protection for the rear passenger side. As part of the Wide-Body Cab Threshold, it shares the same high‑quality material and precision fitment. This threshold is particularly important for vehicles that frequently carry passengers or cargo, as it shields the door sill from abrasion and impact. The right rear threshold is also designed to facilitate easy cleaning, with smooth surfaces that resist dirt adhesion.
The Door sealing strip is an elastomeric profile that fits along the door perimeter, creating an effective weather barrier. Within the Wide-Body Cab Threshold, this seal is essential for reducing wind noise, preventing water leaks, and maintaining cabin climate control. Made from EPDM rubber with excellent weather resistance, it retains its flexibility even in extreme temperatures. The sealing strip features a hollow bulb section that compresses against the door frame, ensuring a consistent seal throughout the vehicle’s life.
This assembly comprises a self‑tapping screw with a cross recessed pan head, combined with a flat washer. It is used to securely fasten the threshold plates and sealing strips to the cab structure. As an integral part of the Wide-Body Cab Threshold, these fasteners provide reliable clamping force without damaging the plastic components. The washer distributes the load evenly, preventing stress fractures. The screws are coated for corrosion resistance, ensuring long‑term performance in the interior environment.
The Support nut seat is a threaded insert that anchors the screws within the cab’s metal framework. This component of the Wide-Body Cab Threshold provides a secure point for the fasteners, reducing the risk of loosening over time. It is typically pre‑installed or placed during assembly to facilitate straightforward replacement. The nut seat is made from hardened steel with a protective finish, ensuring that it maintains its grip even after repeated removal and re‑installation.
| NO. | Part NO. | Name |
|---|---|---|
| 1 | 811W61510-0791 | Left front door threshold |
| 2 | 811W61510-0790 | Right front door threshold |
| 3 | 810W61510-0789 | Left rear door threshold |
| 4 | 810W61510-0788 | Right rear door threshold |
| 5 | 810W62651-0106 | Door sealing strip |
| 6 | Q2204855F31 | Cross recessed pan head tapping screw and flat washer assembly |
| 7 | Q2204825F31 | Cross recessed pan head tapping screw and flat washer assembly |
| 8 | 810W90685-0416 | Support nut seat |
Our Wide-Body Cab Threshold is manufactured from premium polymers and high‑grade rubber compounds that offer exceptional resistance to wear, UV radiation, and temperature extremes. This ensures that the Wide-Body Cab Threshold maintains its appearance and functionality even after years of daily use, reducing the need for frequent replacements.
Every component of the Wide-Body Cab Threshold is developed using 3D scanning and CAD modelling to match the exact specifications of the Sitrak C7H cab. This precision engineering guarantees a flawless fit, eliminating gaps and misalignments that could compromise sealing or aesthetics.
The Wide-Body Cab Threshold is supplied with all necessary fasteners and detailed instructions, allowing for straightforward installation without special tools. The pre‑drilled holes and snap‑fit features reduce labour time, making the Wide-Body Cab Threshold an ideal choice for both professional workshops and DIY enthusiasts.
We maintain a comprehensive stock of Wide-Body Cab Threshold kits to ensure fast delivery worldwide. Our technical support team is available to assist with any queries regarding installation or compatibility, ensuring you get the most from your Wide-Body Cab Threshold.
The Wide-Body Cab Threshold is more than just a decorative trim; it is a functional component that protects the cab structure from corrosion and damage. By covering the exposed metal edges of the door openings, the Wide-Body Cab Threshold prevents moisture accumulation and stone chips that could lead to rust formation. Additionally, the integrated sealing strips reduce noise ingress, contributing to a quieter and more comfortable driving environment.
Materials used in the Wide-Body Cab Threshold are selected for their ability to resist the effects of road salt, industrial fallout, and cleaning agents. The plastics are formulated with UV stabilisers to prevent discolouration and embrittlement, while the rubber seals maintain their elasticity across a wide temperature range (–40°C to +80°C). This ensures that the Wide-Body Cab Threshold continues to perform effectively in all climates.
Before installing the Wide-Body Cab Threshold, ensure that the mounting surfaces are clean and free from old adhesive residue. Use the supplied screws and nut seats to secure the thresholds, tightening them to the recommended torque. Periodically check the fasteners for tightness and inspect the seals for signs of wear or damage. Cleaning the thresholds with mild soap and water will preserve their appearance.
While the Wide-Body Cab Threshold is designed for long service life, it is advisable to inspect the components during routine service intervals. If the sealing strips become cracked or the thresholds show signs of significant wear, replacement is recommended to maintain cabin integrity. Our Wide-Body Cab Threshold kits are available as a full set, simplifying the replacement process.
The Wide-Body Cab Threshold is specifically engineered for the wide‑body cab variant of the Sitrak C7H, including both day cab and sleeper versions. It is not interchangeable with standard‑width cabs, so it is essential to verify your cab type before ordering. The part numbers provided correspond directly to the factory specifications, ensuring a correct match.
Each component of the Wide-Body Cab Threshold undergoes stringent quality control, including dimensional inspection, material hardness tests, and accelerated ageing trials. We offer a warranty against manufacturing defects, giving you confidence in the durability of your Wide-Body Cab Threshold.
Our distribution network ensures that the Wide-Body Cab Threshold is available for prompt shipping to any location. We understand the urgency of fleet maintenance and strive to minimise lead times, keeping your vehicles operational.
Compared to the cost of repairing corroded door sills or replacing damaged interior trim, the Wide-Body Cab Threshold offers a highly economical preventative measure. Its durability reduces the frequency of replacements, delivering excellent value over the vehicle’s lifetime.
Aftermarket threshold kits may compromise on fit and material quality. Our Wide-Body Cab Threshold is produced to the same standards as the original equipment, ensuring that your Sitrak C7H retains its factory appearance and protection. Choose genuine quality for peace of mind.
Maintaining your truck with high‑quality components like the Wide-Body Cab Threshold helps preserve its resale value. Prospective buyers appreciate vehicles that have been well cared for, and a pristine interior with intact trim and seals reflects positively on the overall condition.
Extensive field testing has validated the effectiveness of the Wide-Body Cab Threshold in reducing dust and water ingress, as well as improving acoustic comfort. Feedback from fleet operators confirms that the Wide-Body Cab Threshold contributes to lower repair costs and higher driver satisfaction.
The non‑slip surface pattern on the threshold plates reduces the risk of slipping, especially when stepping in and out in wet conditions. Additionally, the secure fastening system prevents the thresholds from becoming loose and creating a trip hazard. The Wide-Body Cab Threshold is thus a safety enhancement as well as a protective trim.
Our Wide-Body Cab Threshold is produced using injection moulding and extrusion techniques that ensure consistent part quality. The use of automated assembly lines guarantees that each screw and nut seat is correctly positioned, simplifying installation for the end‑user.
Long‑distance trucking places high demands on interior components. The Wide-Body Cab Threshold is specifically designed to resist the constant foot traffic and vibration encountered in long‑haul applications, ensuring that it remains securely in place and visually appealing throughout the vehicle’s operational life.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.
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