661 rubber air spring/air bag/Air
spring/661N/SRI1R250E/8018/556-03-8018/1R1C390
310/W01-095-0021/831120144/4.731.042.000/4746733/41822247/4731012000/90.83112.0144/1137888/1137882/100112250/10-01-001/1R1C390-310
Product Description
Elevate the ride quality, stability, and reliability of your fleet
with the Model 661 Universal Air Suspension Spring, proudly offered
by Nanjing Dingguan Accessories Co., Ltd. as an authorized distributor. This high-performance air spring is a top-tier choice,
specifically engineered to meet the demanding requirements of some
of the world’s most popular bus brands, including King Long,
Yutong, and Higer.
This essential suspension component plays a crucial role in
delivering a superior passenger experience. It effectively absorbs
road imperfections, minimizes vibrations, and automatically adjusts
to varying loads to maintain a consistent and safe ride height. A
robust air spring directly translates to enhanced comfort, reduced
driver fatigue, and protection for the vehicle’s chassis from undue
stress.
Key Features:
- Broad Compatibility: Expertly designed as a universal solution for a wide range of King
Long, Yutong, and Higer bus models, simplifying inventory
management and ensuring a perfect fit.
- Enhanced Passenger Comfort: Masterfully dampens shocks and vibrations, providing a remarkably
smooth and quiet ride that significantly boosts passenger
satisfaction.
- Exceptional Durability: Constructed from high-strength, multi-layered reinforced rubber
and corrosion-resistant materials to ensure a long, dependable
service life under rigorous daily operation.
- Authorized Quality Guarantee: As an authorized distributor, we guarantee that you are receiving
a genuine, high-quality product (Model 661) that adheres to
stringent manufacturing and safety standards.
Invest in the Model 661 air spring to reduce maintenance costs,
improve vehicle performance, and ensure the safety of your
passengers.
Contact Nanjing Dingguan today for a competitive quote and expert advice on your fleet’s
suspension needs.
Product Name: | Air shock absorber spring | Part Number; | 661/2931-00603 |
Quality control: | ISO 9001+ECER66+GB/T 13061 | Size: | Ф1=Ф2=150.8,H=380 |
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: | 2931-00603 | 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 premium 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 leading 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