DG644 rubber air spring / air bag / Air spring /1S285-24/664N/8017/556-03-8017/1R1A390 295/W01-095-0118/02.200.24.40.0/0689677/0696229/4.771.170.000/4771143/81.43601.0017/3073280001 Product Description Introducing the Air Suspension Spring 644 for Suzhou King Long & Higer Buses—engineered and supplied by Nanjing Dingguan Parts Co., Ltd. This precision-crafted air spring is a direct-fit replacement designed to restore ride comfort, stability, and handling on popular city and intercity bus models. Key Features• Precise Compatibility: Tailored for Suzhou King Long and Higer bus chassis, part number 644 delivers exact mounting dimensions for hassle-free installation.• Heavy-Duty Construction: Reinforced rubber bellows bonded to a high-tensile steel piston and base plate ensure long-term durability under repetitive load cycles.• advanced Ride Comfort: The progressive air spring design absorbs road shocks and vibrations, reducing noise and providing passengers with a smooth, fatigue-free journey.• Enhanced Safety & Stability: Consistent air pressure support maintains optimal vehicle height and weight distribution, improving braking performance and cornering control.• Corrosion-Resistant Finish: All metallic components are treated with anti-rust coatings to withstand harsh weather conditions and roadside contaminants.• Stringent Quality Control: Manufactured in ISO 9001–certified facilities and subjected to dynamic fatigue and burst-pressure tests, each unit meets or exceeds OEM specifications. Why Choose Nanjing Dingguan Parts Co., Ltd.?With over a decade of specialization in commercial vehicle suspension systems, we deliver reliable parts and personalized service to global bus operators and spare-parts distributors. Our dedicated R&D team continuously refines design and material selection, while our streamlined logistics network ensures prompt delivery to your warehouse or workshop. Optimize your fleet’s performance and passenger satisfaction with the Air Suspension Spring 644. Contact Nanjing Dingguan Parts Co., Ltd. today for competitive pricing, minimum order quantities that suit your needs, and technical support you can rely on. Product Name: Air shock absorber spring Part Number; 644 Quality control: ISO 9001+ECER66+GB/T 13061 Size: Ф1=Ф2=130.8,H=395 Type: Suspension accessories Place of origin: Nanjing, China Materials: Neoprene Packaging: Paper packaging/custom packaging Minimum order quantity: 1 Application: bus Status: brand new Cargo transportation: TNT, EMS, UPS, FedEx, DHL or according to your requirements. OE: 644 Factory quality inspection: 100% inspection Product details pictures How to buy the right bus accessories 1.Please provide VIN number 2.Please provide clear photos 3.Please provide the OEM number 4.lf you are unsure, please contact us. Nanjing Dingguan Auto Parts Co., Ltd. -- Your reliable partner for bus spare parts. About Us Nanjing Dingguan Automotive Parts Co., Ltd. specializes in providing high-quality and cost-effective parts for buses and commercial vehicles. We focus on the global market, have rich experience in exporting bus and truck parts, provide services to distributors and fleet operators, and provide tailor-made solutions to meet different needs. Warehouse and cargo display About shipping and packaging transportation TNT, EMS, UPS, FedEx, DHL or as per your requirement. packaging Bubble wrap, cartons, wooden boxes, and pallets are used to avoid damage to goods caused by bumps. common problem 1: Can you provide an accurate price? Sure. You need to provide the vehicle VIN number, provide the product OEM code, or provide a clear product photo. 2: What's your minimum order quantity? No minimum order quantity, of course, if you buy more items from our company, you can get preferential prices and discounts. 3: What's the delivery time? Air freight orders take 5 to 8 days. Sea freight orders take 15 to 25 days. My advantage 1:High-Quality Bus Components Specialized in high-grade aftermarket bus parts including engines,transmissions, and braking systems, built for durability and performance. 2:Comprehensive spare parts solution We offer a full range of bus accessories: filters, suspension components, electrical components, and interior accessories for all major bus brands. 3: ISO-Certified Manufacturing Our ISO 9001/TS 16949-certified products ensure strict quality control, reliability, and compliance with international standards.ISO 4: Global Bus Part Coverage Our products are compatible with trusted bus models from Europe, Asia, and the Americas. 5;Extensive product catalog Engine parts, HVAC systems, lighting, wheels and safety components covering city, intercity and long-distance buses. Contact Us