Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly-Durable & Genuine. Order Now!
Sitrak C7 Dual-Lock Air Suspension Left Seat Assembly
Sitrak C7 Dual-Lock Air Suspension Left Seat Assembly
2026-01-07
Sitrak C7 Dual-Lock Gas Spring Right Seat Assembly
Sitrak C7 Dual-Lock Gas Spring Right Seat Assembly
2026-01-07

Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly

The Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly is a complete, high-performance driver seat system engineered for Sinotruk Sitrak C7 series trucks, offering unparalleled comfort, safety, and durability for professional drivers. This comprehensive assembly features advanced dual-lock air suspension technology that provides exceptional vibration isolation and stability across diverse road conditions. As a key component within the extensive catalog of Sinotruk Sitrak parts, it is designed to integrate seamlessly with C7 cabin architecture.

Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly

Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly

What is the Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly?

The Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly is a complete seating system specifically designed for the driver’s position in Sinotruk Sitrak C7 series trucks. This assembly incorporates dual-lock air suspension technology that allows for precise height adjustment and excellent shock absorption, significantly reducing driver fatigue during long-haul operations. The system includes multiple sophisticated components such as X-type bracket welding assemblies, nylon bearings, rubber buffer blocks, air springs (bellows), dampers, height valve assemblies, and various adjustment mechanisms for seat angle, lumbar support, and armrest positioning.

This assembly features an integrated alarm-equipped seatbelt system that enhances safety by alerting drivers when the belt is not properly fastened. The seat includes multiple comfort and adjustment features such as adjustable lumbar support via side bolster airbags, seat cushion tilt adjustment, backrest angle adjustment with a dedicated handle, and integrated left and right armrests. The construction utilizes high-quality materials including metal components with anti-corrosion treatments, durable polymers for bearings and sliders, reinforced welding assemblies for structural integrity, and premium upholstery materials for the seat and backrest covers. Every component is engineered to work together seamlessly, creating a synchronized system that responds intuitively to driver adjustments.

The Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly offers exceptional customization through its multiple adjustment points. Drivers can modify seat height via the air suspension system, adjust seat cushion angle using the tilt mechanism, modify backrest angle through the recliner assembly, and customize lumbar support through the integrated air bladder system. The assembly includes comprehensive mounting hardware, cable controls, and pneumatic components that ensure smooth operation and reliable performance. With its modular design, maintenance and part replacement are simplified, as individual components can be accessed and replaced without requiring complete seat disassembly, reducing downtime and maintenance costs.

Engineered specifically for commercial truck applications, this seat assembly withstands the rigorous demands of daily professional use. The dual-lock mechanism provides exceptional stability during vehicle maneuvers, preventing unwanted seat movement while allowing for smooth adjustment when needed. The comprehensive component list includes everything from structural frames and mounting brackets to adjustment handles, decorative covers, and fastening hardware, ensuring a complete installation package. This assembly represents Sinotruk Sitrak’s commitment to driver comfort and safety, offering a premium seating solution that enhances the overall driving experience in C7 series trucks.

Product Parameters of Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly

No. Part Number Part Name English Quantity
1WG1662511105Left Seat X-Type Bracket Welding Assembly I1
2WG1662511111Left Seat X-Type Bracket Welding Assembly II1
3WG1662511124Inner and Outer Bracket Connecting Bolt2
4WG1662510989Metal Non-Lubricated Bush I4
5Q33210Type 2 All-Metal Hex Lock Nut2
6WG1662511116Slider I2
7WG1662511116Slider I2
8Q218B0840Hexagon Socket Head Cap Screw2
9Q33208Type 2 All-Metal Hex Lock Nut2
10Q33208Type 2 All-Metal Hex Lock Nut2
11Q33208Type 2 All-Metal Hex Lock Nut2
12Q33208Type 2 All-Metal Hex Lock Nut2
13WG1662511125Nylon Bearing2
14WG1662511125Nylon Bearing2
15WG1662511133Inner Limit Block Assembly2
16WG1662511932Hexagon Socket Head Cap Screw (II)2
17WG1662511150Rubber Buffer Block2
18WG1662511163Limit Belt Mounting Plate1
19Q40308Spring Washer1
20Q40308Spring Washer4
21Q40308Spring Washer4
22WG1662511931Hexagon Socket Head Cap Screw (Ⅰ)1
23WG1662511931Hexagon Socket Head Cap Screw (Ⅰ)2
24WG1662511931Hexagon Socket Head Cap Screw (Ⅰ)4
25WG1662511134Upper Frame Assembly1
26WG1662510160Limit Bracket Assembly1
27WG1662510142Oval Head Bolt2
28WG1662510143Inner Limit Block II2
29Q2725513F31Cross Recessed Pan Head Self-Tapping Screw2
30WG1662511132Air Spring (Bellows)1
31WG1662511921Plastic-Tightening Screw 80*162
32WG1662511127Damper Assembly1
33WG1662511131Bolt (for Damper Installation)1
34Q40208Large Washer1
35WG1662511950Rotating Plate Welding Assembly1
36Q43635Open Retaining Ring1
37WG1662511955Push-Pull Cable1
38WG1662511211Cable V1
39Q43640Open Retaining Ring1
40Q43640Open Retaining Ring2
41Q43640Open Retaining Ring4
42Q43640Open Retaining Ring3
43Q43640Open Retaining Ring2
44Q43640Open Retaining Ring1
45WG1662512139C7 Seat Height Valve Assembly1
46Q2140512Cross Recessed Pan Head Screw3
47Q40205Large Washer3
48WG1662511598Belt Fixing Shaft1
49WG1662511201Seat Frame Welding Assembly1
50WG1662511925Limit Block2
51WG1662510229Frame Fixing Shaft Assembly2
52Q4400413719Open Type Flat Round Head Blind Rivet2
53Q4400413719Open Type Flat Round Head Blind Rivet4
54WG1662511152Seat Cushion Tilt Adjuster Outer Frame1
55WG1662511153Seat Cushion Tilt Adjuster Outer Frame Cover1
56WG1662511154Spring2
57WG1662511155Locking Plate2
58WG1662511156Rotating Wheel I2
59WG1662511157Cable IV1
60WG1662511158Guide Block2
61WG1662510220Seat Cushion Fixing Slider4
62Q4404825719Open Type Flat Round Head Blind Rivet4
63WG1662511207Right Locking Small Torsion Spring1
64WG1662510225Left Locking Small Torsion Spring1
65Q40206Large Washer2
66Q2140612Cross Recessed Pan Head Screw2
67WG1662510235Left Cable Fixing Bracket1
68WG1662510236Right Cable Fixing Bracket1
69WG1662510234Cable VI1
70WG1662510237Cable VII1
71WG1662511208Left Handle Assembly1
72Q2724219Cross Recessed Pan Head Self-Tapping Screw3
73WG1662511209Cable II1
74WG1662511210Cable III1
75WG1662511912Cable Fixing Clip II3
76WG1662511162Seat Limit Belt1
77WG1662511599Rubber Protective Sleeve1
78WG1662511170Rubber Sleeve Rivet16
79WG1662512052Slide Rail Assembly1
80WG1662511920Quick-Connect Straight Through Fitting1
81WG1662511302Backrest Frame Welding Assembly1
82WG1662511307Backrest Support Air Spring Assembly1
83WG1662511308Backrest Side Support Air Spring Assembly2
84WG1662510303Backrest Soft Cushion1
85WG1662510331Backrest Rear Decorative Cover Fixing Block2
86WG1662510333Left Armrest Assembly1
87WG1662510334Right Armrest Assembly1
88Q218B0820Hexagon Socket Head Cap Screw4
89Q218B0820Hexagon Socket Head Cap Screw1
90Q218B0820Hexagon Socket Head Cap Screw2
91WG1662510330Backrest Rear Decorative Cover1
92WG1662512147Seat Belt Fixing Bracket Assembly1
93WG1664560090Left Seat Belt Assembly (with Alarm Function)1
94Q2204213F31Cross Recessed Pan Head Self-Tapping Screw and Flat Washer Assembly2
95Q2204213F31Cross Recessed Pan Head Self-Tapping Screw and Flat Washer Assembly2
96Q2204213F31Cross Recessed Pan Head Self-Tapping Screw and Flat Washer Assembly2
97WG1662511923Seat Belt Decorative Cover1
98WG1662511924Seat Belt Front Decorative Cover1
99WG1662510337Right Torsion Spring1
100WG1662510335Backrest Mounting Bolt2
101WG1662511309Left Seat Backrest Adjustment Handle1
102WG1662511911Internal Tooth Retaining Ring2
103WG1662511999Height Valve PU Tube Fixing Clip1
104WG1662511212Left Seat Left Decorative Cover Plate1
105Q2724213Cross Recessed Pan Head Self-Tapping Screw1
106Q2724213Cross Recessed Pan Head Self-Tapping Screw1
107WG1662511213Lumbar Support Control Valve1
108Q2723595Cross Recessed Pan Head Self-Tapping Screw3
109WG1662511214Tube Fixing Bracket1
110WG1662510240Left Seat Rear Decorative Cover Plate1
111Q2204295F31Cross Recessed Pan Head Self-Tapping Screw and Flat Washer Assembly4
112WG1662511900Left Seat Right Decorative Cover Plate1
113WG1662511926Right Protective Cover Fixing Bracket2
114WG1662510241Left Seat Front Decorative Cover Plate1
115WG1662511403Seat Cushion Base Plate1
116WG1662511409Leaf Spring2
117WG1662510413Cable Fixing Plate1
118WG1662510405Seat Cushion Soft Pad1
119WG1662510407Seat Cushion Clip20
120WG1662512146Seat Cushion Tilt Adjustment Handle Assembly1
121Q2724216Cross Recessed Pan Head Self-Tapping Screw2
122WG1662511930Gasket1
123AZ1662511101Left Seat Lower Frame Welding Assembly1
124WG1662512140Guide Tube1
125WG1662511117Left Seat Backrest Recliner Assembly1
126WG1662510221Right Seat Backrest Recliner Assembly1
127Q4400611T19Open Type Flat Round Head Blind Rivet4
128Q4400406T19Open Type Flat Round Head Blind Rivet4
129WG1662512073Backrest Upholstery Assembly1
130WG1662510336Left Torsion Spring1
131Q4400408T19Open Type Flat Round Head Blind Rivet4
132WG1662512075Seat Cushion Upholstery Assembly1

Why Choose Our Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly?

Our Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly represents the highest standard of commercial vehicle seating, engineered with over 130 individual components that work together to deliver exceptional comfort, durability, and safety. Unlike partial seat repairs or generic replacements, our complete assembly ensures perfect compatibility with Sinotruk Sitrak C7 series trucks, eliminating fitment issues and providing seamless integration with existing cabin systems. The dual-lock air suspension technology offers superior vibration isolation compared to standard mechanical seats, significantly reducing driver fatigue during long-haul operations and improving overall driving performance. With comprehensive adjustment capabilities including height, tilt, lumbar support, and backrest angle, our seat assembly provides personalized comfort that adapts to individual driver preferences and body types.

The construction quality of our Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly exceeds industry standards, utilizing premium materials throughout all components. Structural elements like the X-type bracket welding assemblies and seat frame are manufactured from high-strength steel with anti-corrosion treatments, while moving parts incorporate durable polymers like nylon bearings and rubber buffers to ensure smooth, long-lasting operation. The integrated air spring system provides consistent support and adjustability, with reinforced bellows and precision valves that maintain performance under varying loads. Every component in our assembly undergoes rigorous quality testing before inclusion, ensuring reliable performance even in the most demanding commercial applications.

Safety features embedded in our Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly provide enhanced protection for professional drivers. The alarm-equipped seatbelt system promotes proper usage through auditory reminders, while the dual-lock mechanism prevents unexpected seat movement during sudden maneuvers. The comprehensive limit block system and reinforced structural components ensure the seat maintains integrity under extreme conditions. Additionally, the ergonomic design reduces strain on the driver’s body, promoting better posture and reducing the risk of musculoskeletal injuries that can result from prolonged sitting in inadequate seating positions.

Choosing our Sitrak Truck C7 Dual-Lock Air Suspension Left Seat Assembly provides exceptional long-term value through reduced maintenance requirements and extended service life. The complete assembly includes all necessary components for installation, eliminating the need to source individual parts separately. Our seat assembly is backed by Sinotruk’s reputation for quality and supported by comprehensive technical documentation and availability through authorized distribution networks.

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